SCREEN STRUCTURE FOR X-RAY TUBE WITH LARGE SURFACE

X-ray tube and Roentgen analyzer.

Um fähig zu sein, eine noch kleinere und noch leichtere Bauweise zu erreichen, und um die Empfindlichkeit durch ein noch effizienteres Detektieren der Röntgenfluoreszenzstrahlung oder Ähnlichem in einer Röntgenröhre und einem Röntgenanalysegerät zu begünstigen, sind vorgesehen: ein Vakuumgehäuse (2), dessen Inneres in den Vakuumzustand gebracht ist, und welches einen aus einer röntgendurchlässigen Folie gebildeten Fensterbereich (1) umfasst, wobei sich durch die röntgendurchlässige Folie ein Röntgenstrahl fortpflanzen kann, eine Elektronenstrahlungsquelle (3), welche im Innern des Vakuumgehäuses (2) zur Abstrahlung eines Elektronenstrahls (e) angeordnet ist, ein Target (T) zur Generierung primärer Röntgenstrahlung (X1) durch Bestrahlung mit dem Elektronenstrahl (e), und welches im Innern des Vakuumgehäuses (2) angeordnet ist, um fähig zu sein, die primäre Röntgenstrahlung (X1) auf eine äussere Probe (S) durch den Fensterbereich (1) abzustrahlen, und ein Röntgenstrahlungsdetektierungselement ...

Tragbare Computertomographievorrichtung

Computertomographievorrichtung mit folgenden Merkmalen: einem von einer Person tragbaren Gehäuse (20); einer Mehrzahl von in dem Gehäuse (20) angeordneten Komponenten (3044), die ausgebildet sind, um Signale zu erzeugen, die eine computertomographische Darstellung eines Objekts ermöglichen; und einer Abschirmungseinrichtung (12, 14), die einen abgeschirmten Raum in dem tragbaren Gehäuse (20) definiert, um die Umgebung vor in dem tragbaren Gehäuse (20) erzeugter Röntgenstrahlung (60) abzuschirmen, wobei Komponenten (30, 32, 34) der Mehrzahl von in dem Gehäuse angeordneten Komponenten, die Röntgenstrahlung ausgesetzt sind, in dem abgeschirmten Raum angeordnet sind, und wobei zumindest eine der Komponenten (36, 42, 44) außerhalb des abgeschirmten Raums in dem Gehäuse (20) angeordnet ist, wobei die Komponenten eine Röntgenstrahlungsquelle (30), einen Röntgenstrahlungsdetektor (32), einen Objektraum (34) zwischen der Röntgenstrahlungsquelle (30) und dem Röntgenstrahlungsdetektor (32) und einen ...

X-Ray tubes

COMPACT HIGH VOLTAGE X-RAY SOURCE SYSTEM AND METHOD FOR X-RAY INSPECTION APPLICATIONS

An x-ray system is disclosed that includes a bipolar x-ray tube. The bipolar x-ray tube includes two insulators that are separated by an intermediate electrode in an embodiment, wherein each insulator forms a portion of an outer wall of a vacuum envelope of the bipolar x-ray tube surrounding at least a portion of a path of an electron beam within the vacuum envelope. In further embodiments, the bipolar x-ray tube includes a first electrode at a positive high voltage potential with respect to a reference potential, a second electrode at a negative high voltage potential with respect to the reference potential, and an x-ray transmissive window that is at the positive high voltage potential.

System and method for manufacturing X-ray tubes having glass envelopes

Systems and methods are disclosed for exhausting and combined exhausting and seasoning of x-ray tubes having glass envelopes for a high performance x-ray system having a rotating anode therein. The methods include providing a glass tubulation having a diameter greater than about 20 mm, then operatively connecting the glass tubulation to the x-ray tube glass envelope, providing a glass sealing cup inside the glass tubulation, the glass sealing cup having a smaller diameter than the glass tubulation, providing a vacuum to the glass tubulation, positioning a heater on the outside of the glass tubulation, heating the anode of the x-ray tube to a temperature inside the x-ray tube glass envelope of about 1500 DEG C., positioning the glass sealing cup inside the glass tubulation proximate the position of the heating means on the outside of the glass tubulation, heating the glass tubulation proximate the glass sealing cup to about 1300 DEG C., checking for sealing contact between the glass tubulation ...

Cooling unit used with X-ray tube fitted on frame of CT imaging system

The cooling unit is fitted on the frame of a computer tomograph imaging system and the frame is rotatable around a frame axis. A frame (54,56) which for a rotation is connected with the frame (12), for moving around the axis (Ag). Facilities (28,30,32) are provided for forming a flow path for the X-ray tube fluid for cooling, between the X-ray tube (14) and a point near the frame. A fan (36) is provided for the moving of an air flow across a section (44) of the flow path. It is arranged for dissipating heat from the cooling fluid, if this flows through the section (44). The fan (36) is a radial fan and the rotation axis (Af) of the fan is essentially parallel to the frame axis (Ag).

COMPUTED TOMOGRAPHY SYSTEM HAVING COOLING SYSTEM

Provided is a CT system having a cooling system. The CT system may include a gantry unit including: a rotor; and an assembly component; an intake provided on a first surface of the rotor; and an outtake provided on a second surface opposite to the first surface of the rotor, wherein the gantry unit is cooled by air moving through the intake and the outtake due to a rotation force or a centrifugal force generated by a rotation movement of the rotor.

X-RAY TUBE ASSEMBLY

According to one embodiment, an X-ray tube assembly includes a cathode, an anode target, a joint including an inflow part into which a coolant flows, a first cylindrical pipe to which the joint is connected at one end, and the anode target is joined at an outer bottom part of the other end, a second cylindrical pipe whose first end part is fitted into the inflow part, and whose second end part is arranged to eject the coolant toward the bottom part of the first cylindrical pipe, the second cylindrical pipe being placed inside the first cylindrical pipe and an elastic member provided between the first end part and the first cylindrical pipe. 1. An X-ray tube assembly comprising:a cathode which emits electrons;an anode target from which X-rays are generated by being bombarded with the electrons emitted from the cathode;a joint including an inflow part into which a coolant flows;a closed-end first cylindrical pipe to which the joint is connected at one end, and the anode target is joined at an outer bottom part of the other end;a second cylindrical pipe whose first end part is fitted into the inflow part, and whose second end part is arranged to eject the coolant flowing into the pipe from the first end part toward the bottom part of the first cylindrical pipe, to which the anode target is joined, the second cylindrical pipe being placed inside the first cylindrical pipe; andan elastic member provided between the first end part and the first cylindrical pipe.2. The X-ray tube assembly according to claim 1 , whereinthe elastic member is a resinous rubber member.3. The X-ray tube assembly according to claim 2 , whereinthe elastic member is formed of at least one of silicone rubber, fluoro-rubber, ethylene-propylene rubber, and nitrile rubber.4. The X-ray tube assembly according to claim 1 , whereinthe elastic member is formed into an O-ring-like shape or a pipy shape.5. The X-ray tube assembly according to claim 1 , whereinthe elastic member is formed into a circular ...

Blendenhalter für eine Objektivblende einer Röntgenröhre, Objektivblende und Röntgenröhre

Die Erfindung befasst sich mit einem Blendenhalter 5 für eine Objektivblende 1 einer Röntgenröhre, dadurch gekennzeichnet, dass er eine Kühleinrichtung 3 aufweist.Die Erfindung befasst sich mit einem Objektiv 9 für eine Röntgenröhre mit einem Spulenkern 6, einer Objektivspule 7, einer Objektivblende 1 und einem erfindungsgemäßen Blendenhalter 5, der am Spulenkern 6 angeordnet ist, wobei die Objektivblende 1 an dem Spulenkern 6 angeordnet ist.Darüber befasst sich die Erfindung auch mit einer Röntgenröhre mit Mitteln zur Erzeugung eines Elektronenstrahls 4 und zum Richten des Elektronenstrahls 4 auf ein Target 22 und mit einem erfindungsgemäßen Objektiv 9 zur Fokussierung des Elektronenstrahls 4.

X-RAY TUBE COOLING SYSTEM

Electron beam welding apparatus

COMPUTED TOMOGRAPHY SYSTEM HAVING COOLING SYSTEM

A cooling system of a computed tomography (CT) system provides for a more efficient operation than known heretofore. The cooling system of the CT system includes a gantry and a table that moves an object into a bore of the gantry. The gantry includes part boxes mounted therein, and blade elements are formed in regions of the part boxes. The cooling system of the CT system includes a cooling method that includes a multiple cooling method including a stand-by mode and an operating mode.

X-ray tubes

An X-ray tube comprises an electron source in the form of a cathodE (12), and an anode (14) within a housing (10). The anode (14) is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. X-rays can be collected through a first window (16) directly behind the anode (14), or a second window (18) to one side of the anode. A retardation electrode 20 is located behind the anode 4 and is held at a potential which is negative with respect to the anode 14, and slightly positive with respect to the cathode (12). This retardation electrode (20) produces an electric field which slows down electrons passing through the anode (14) so that, when they interact with it, they are at relatively low energies. This reduces the heat load on the tube.

Portable industrial x-ray system conveniently field-configurable for gas or liquid cooling

An x-ray system with a tubehead that can be easily configured in the field for gas or liquid cooling of the x-ray tube anode so a user need not stock or carry more than one kind of tubehead to accommodate different cooling needs.

Apparatus for removing heat from X-ray tube cooling fluid

In an arrangement for cooling an X-ray tube mounted on the gantry of a CT system, a path of flow is established by means of conduits or the like for circulating a cooling fluid between the tube and a heat exchanger. As fluid passes through the heat exchanger, a stream of air is applied to the path of flow, by means of a radial fan, to carry heat away from the fluid. The axis of the fan is maintained in parallel relationship with the axis of the gantry, to prevent gyroscopic loading of the fan as the fan rotates about the gantry axis with the gantry. The fan comprises a device for exhausting air heated by the exchange process radially, with respect to the fan axis, to minimize fan-generated acoustic noise while maintaining good thermal performance. Fan support structure lying in the path of the exhausted air is selectively shaped to reduce air flow turbulence, and to thereby further reduce fan noise.

Drehanoden-Röntgenrohr zum effizienten Austrag intensiver Wärme

Drehanoden-Röntgenrohr zum effizienten Austrag intensiver Wärme

A liquid metal sealing device

A charged particle beam apparatus and method for locally removing material from a predetermined location on a workpiece, such as the removal of a metallization layer covering an alignment mark on a wafer. The invention is particularly suited for high-volume mass production of semiconductor chips or electromechanical devices. According to one embodiment of the invention, a layer of material covering an alignment mark on a wafer is removed by ion beam sputtering using a non-LMIS beam directed at an oblique angle to the sample surface.

냉각 CT 시스템

... 냉각 CT 시스템이 개시된다. 개시된 냉각 CT 시스템은 갠트리부의 회전부 및/또는 회전부 내에 장착된 어셈블리 요소의 표면에 형성된 흡기구 및 배기구를 각각 포함할 수 있다. 흡기구는 회전부 또는 어셈블리 요소의 표면으로부터 외부로 돌출되도록 형성될 수 있으며, 배기구는 회전부 또는 어셈블리 요소의 내부로 돌출되도록 형성될 수 있다.

X-RAY TUBE COOLING SYSTEM, AND X-RAY GENERATOR

PROBLEM TO BE SOLVED: To provide an X-ray tube cooling system capable of achieving further high cooling efficiency, and of preventing excessive thermal stress to a coolant. SOLUTION: This X-ray tube cooling system utilizes a shield structure that is connected between a cathode cylinder and an X-ray tube housing and is disposed between an electron source and a target anode. The shield has a plurality of cooling fins to improve overall cooling of the X-ray tube and the shield so as to extend the life of the X-ray tube. When immersed in a reservoir of the coolant, the fins facilitate improvement of heat transfer from the shield to the coolant. The cooling effect thereof is further augmented by a convective cooling system provided by a plurality of passages formed within the shield. A cooling unit takes fluid from the reservoir, cools the fluid, and then circulates the cooled fluid through cooling passages. The coolant is then output from the passage and directed over the cooling fins. The ...

X-RAY TUBE DEVICE AND X-RAY CT APPARATUS

There is provided an X-ray tube device having a configuration for preventing peeled-off solid lubrication films from scattering in an X-ray tube even when the solid lubrication film peels off a rotary bearing. The X-ray tube device includes: an anode () that is irradiated with an electron beam, thereby emitting X-rays; a rotary bearing () that rotatably supports the anode (); a solid lubrication film which is formed on a front surface of the rotary bearing () and into which a ferromagnet is mixed from the rotary bearing (); and an attractor () which attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing (). 1. An X-ray tube device comprising:an anode that is irradiated with an electron beam, thereby emitting X-rays ;a rotary bearing that rotatably supports the anode;a solid lubrication film which is formed on a front surface of the rotary bearing so as to be mixed with a ferromagnet; andan attractor that attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing.2. The X-ray tube device according to claim 1 ,wherein a paramagnet is disposed between the attractor and the rotary bearing.3. The X-ray tube device according to claim 1 ,wherein the attractor contains a permanent magnet and the permanent magnet is disposed at a position having a temperature that does not exceed the Curie temperature of the permanent magnet.4. The X-ray tube device according to claim 3 , further comprising:a rotary-member support mechanism that has the rotary bearing and causes the anode to rotate,wherein the permanent magnet is disposed at an exit of the rotary-member support mechanism.5. The X-ray tube device according to claim 3 ,wherein the attractor contains a ferromagnet that is disposed to be in contact with the permanent magnet.6. The X-ray tube device according to claim 3 , further comprising:a rotary-member support mechanism that causes the anode to rotate,wherein the rotary-member support mechanism is ...

X-Ray Tube Casing With Integral Heat Exchanger

An x-ray tube casing is provided which includes a housing having a heat exchanger integrally formed thereon in an additive manufacturing process. The additive manufacturing process allows for tight tolerances with regard to the structure for the casing and the internal passages of the heat exchanger to significantly reduce the size and weight of the casing. The casing additionally includes a fluid distribution manifold that effectively distributes the cooling fluid within the casing to more efficiently provide cooling to the x-ray tube insert disposed within the casing. 1. An x-ray tube casing for an x-ray tube insert , the casing comprising:a housing adapted to receive at least a portion of the x-ray tube insert therein, and;a heat exchanger including a number of fluid flow passages, the heat exchanger formed on an exterior surface of the housing,wherein the housing and the heat exchanger are formed in an additive manufacturing process.2. The x-ray tube casing of wherein the number of fluid flow passages include first fluid flow passages and second fluid flow passages.3. The x-ray tube casing of wherein first fluid flow passages and the second fluid flow passages are countercurrent to one another.4. The x-ray tube casing of wherein the first fluid flow passages and the second fluid flow passages have different dimensions claim 2 ,5. The x-ray tube casing of wherein one of the first or second fluid flow passages is in fluid communication with an interior space of the housing.6. The x-ray tube casing of further comprising a fluid distribution manifold disposed within an interior of the housing.7. The x-ray tube casing of wherein the manifold is integrally formed with the housing.8. The x-ray tube casing of wherein the housing includes an oil pump chamber formed on the exterior of the housing.9. The x-ray tube casing of wherein the oil pump housing is fluid communication with the number of fluid passages in the heat exchanger.10. The x-ray tube casing of further ...

X-ray tubes

Apparatus for generating X-rays emitting focal spot, has diaphragm portion comprising mechanical orifice passage that limits electron beam and/or X-rays, so that size of first effective focal spot is adjusted

The apparatus has a cathode portion that emits electron (4), an anode, first target (5) carrying the base portion (6), on which enclosed housing is formed by first focal point upon irradiation with electron beams. The size of first effective focal spot is adjusted, by limiting the electron beam and/or X-rays (9) by a diaphragm portion (14) comprising mechanical orifice passage (15). The targets are made of material from group consisting of tungsten, rhodium, molybdenum, chromium, iron and silver. The diaphragm portion is made of copper with high thermal conductivity. An independent claim is included for a method for generating X-rays.

Tragbare Computertomographievorrichtung

Eine Computertomographievorrichtung weist ein tragbares Gehäuse und eine Mehrzahl von in dem Gehäuse angeordneten Komponenten auf, die ausgebildet sind, um Signale zu erzeugen, die eine computertomographische Darstellung eines Objekts ermöglichen. Eine Abschirmungseinrichtung ist vorgesehen, die einen abgeschirmten Raum in dem tragbaren Gehäuse definiert, um die Umgebung vor in dem tragbaren Gehäuse erzeugter Röntgenstrahlung abzuschirmen. Die Komponenten, die Röntgenstrahlung ausgesetzt sind, sind in dem abgeschirmten Raum angeordnet. Zumindest eine der Komponenten ist außerhalb des abgeschirmten Raums in dem Gehäuse angeordnet.

X-ray machine ray tube heat dissipation device

The invention discloses X-ray machine ray tube heat dissipation device which comprises a heat dissipation pool and an X-ray machine ray tube arranged in the heat dissipation pool, wherein the heat dissipation pool is provided with a water inlet and a water outlet, and the water outlet of the heat dissipation pool is communicated with the water inlet of water tank. 1. An X-ray machine ray tube heat dissipation device , comprising a heat dissipation pool and an X-ray machine ray tube placed in the heat dissipation pool , wherein a water inlet and a water outlet are formed in the heat dissipation pool , the water outlet of the heat dissipation pool communicates with a water inlet of a water tank , a water outlet of the water tank communicates with an input end of a motor pump , an output end of the motor pump communicates with an input end of a water flow meter , an output end of the water flow meter communicates with an input end of a one-way valve , an output end of the one-way valve communicates with an input end of a water flow electronic control unit , and an output end of the water flow electronic control unit communicates with the water inlet of the heat dissipation pool.2. The X-ray machine ray tube heat dissipation device according to claim 1 , wherein the water flow electronic control unit comprises a tubular structure claim 1 , a first fixing part is arranged on an upper part of an inner wall of the tubular structure claim 1 , a through hole is formed in the first fixing part claim 1 , and a first magnetic device is arranged on a lower end surface of the first fixing part.3. The X-ray machine ray tube heat dissipation device according to claim 2 , wherein a second fixing part is arranged on a lower part of the inner wall of the tubular structure claim 2 , the second fixing part is configured to seal the tubular structure claim 2 , a through hole is formed in a position claim 2 , corresponding to the first magnetic device claim 2 , of the second fixing part ...

Computer tomography emitter with equalisation of thermal focus variations

The emitter has an x-ray tube arranged in a housing filled with coolant, with a side x-ray beam exit window. The tube is held in the housing by a tube suspension (11). The tube has a cathode and a rotary anode. The anode is preferably held in a fixed bearing at the end furthest from the cathode. The device has a regulating device to control the temperature of the coolant such that the length expansion of the anode (6) and the tube suspension (11) and the outer housing to the tube exit window are respectively compensated to zero such that the position of the focal spot of the anode relative to the window stays constant. Preferably the circuit of the coolant is controlled by the regulating device. A characteristic field diagram may be stored in a memory of the regulating device, into which the measured expansions are input.

Computed tomography system having cooling system

A cooling system of a computed tomography (CT) system provides for a more efficient operation than known heretofore. The cooling system of the CT system includes a gantry and a table that moves an object into a bore of the gantry. The gantry includes part boxes mounted therein, and blade elements are formed in regions of the part boxes. The cooling system of the CT system includes a cooling method that includes a multiple cooling method including a stand-by mode and an operating mode.

Large surface area x-ray tube shield structure

Cooling arrangement for an X-ray tube having an external electron beam deflector

A cooling arrangement for an X-ray tube of the type having a housing having an interior space in which the anode is disposed, and a projection in which the cathode is disposed, the projection being connected to the interior space by a neck region, includes channels for coolant flow formed by an electron beam detector that has a U-shape with legs that straddle the exterior of the neck region. Each leg of the electron beam deflector has a surface that faces an exterior corner of the housing formed by the projection, so as to form, in combination with the corner, a channel for coolant flow therethrough. A nozzle for discharging coolant can be provided at one end of each channel.

Compact high voltage X-ray source system and method for X-ray inspection applications

An x-ray system is disclosed that includes a bipolar x-ray tube. The bipolar x-ray tube includes two insulators that are separated by an intermediate electrode in an embodiment, wherein each insulator forms a portion of an outer wall of a vacuum envelope of the bipolar x-ray tube surrounding at least a portion of a path of an electron beam within the vacuum envelope. In further embodiments, the bipolar x-ray tube includes a first electrode at a positive high voltage potential with respect to a reference potential, a second electrode at a negative high voltage potential with respect to the reference potential, and an x-ray transmissive window that is at the positive high voltage potential.

System and method for manufacturing x-ray tubes having glass envelopes utilizing a metal disk

Systems and methods are disclosed for exhausting and combined exhausting and seasoning of x-ray tubes having glass envelopes for high performance x-ray system having a rotating anode therein. The system and methods include providing a glass tubulation having a diameter greater than about 20 mm; then operatively connecting the glass tubulation to the x-ray tube glass envelope; providing a metal disk inside the glass tubulation, the metal disk having a smaller diameter than the glass tubulation, providing a vacuum to the glass tubulation; heating the anode of the x-ray tube to a temperature inside the x-ray tube envelope of about 1500° C.; positioning a heater on the outside of the glass tubulation; positioning the metal disk inside the glass tubulation proximate the position of the heater on the outside of the glass tubulation; heating the metal disk to a sufficient temperature to provide for contact between the glass tubulation and the metal sealing disk; and checking for sealing contact ...

X-RAY GENERATION DEVICE

An X-ray generation apparatus includes an electron gun configured to emit an electron beam, a rotary anode unit having a target generating an X-ray by receiving the electron beam and configured to rotate the target, a magnetic lens having a coil configured to generate a magnetic force acting on the electron beam between the electron gun and the target, and a wall portion disposed between the target and the coil so as to face the target. The wall portion is formed with an electron passage hole through which the electron beam passes and a flow path configured to allow a coolant to flow.

KÜHLANLAGE FÜR RÖNTGENSTRAHLRÖHRE

LARGE SURFACE AREA X-RAY TUBE SHIELD STRUCTURE

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure (108) that is integrated within an evacuated x-ray tube housing (107) and is disposed between the electron source (106) and the target anode (104). The shield (108) includes a plurality of cooling fins (110) to improve overall cooling of the x-ray tube and the shield (108) so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid (114), the fins facilitate improved heat transfer by convention from the shield to the coolant fluid. Fluid passageways (131, 132) are provided within the shield, with one or more epressions of "V" shaped cross sections (111B, 113B, 115B) defined on the surfaces of the fluid passageways (131) served to facilitate nucleate boiling of the coolant in the passageway, and thus increase the heat flux through the passageway to the coolant.

Röntgenstrahlröhrenbaugruppe

Entsprechend einer Ausführungsform enthält eine Röntgenstrahlröhrenbaugruppe (1) eine Kathode (15), ein Anodenziel (13), ein Verbindungsstück (6), das ein Einströmteil umfasst, in welches ein Kühlmittel strömt, ein erstes zylindrisches Rohr (7a), mit welchem das Verbindungsstück an einem Ende verbunden ist und bei welchem das Anodenziel mit einem äußeren unteren Teil des anderen Endes verbunden ist, ein zweites zylindrisches Rohr (7b), dessen erstes Endteil in das Einströmteil eingepasst ist, und dessen zweites Endteil so angeordnet ist, dass es das Kühlmittel ausstößt, das in das Rohr von dem ersten Endteil zu dem unteren Teil des ersten zylindrischen Rohrs strömt, mit welchem das Anodenziel verbunden ist, wobei das zweite zylindrische Rohr im Inneren des ersten zylindrischen Rohrs angeordnet ist, und ein elastisches Element (23), das zwischen dem ersten Endteil und dem ersten zylindrischen Rohr vorgesehen ist.

A liquid metal sealing device

X-RAY TUBE COOLING SYSTEM

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder (102) and an x-ray tube housing (112) and is disposed between the electron source and the target anode (104). The shield structure has a plurality of cooling fins (110) to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of passageways formed within the shield, that provides a fluid path to the coolant (114).

COOLING STRUCTURE FOR OPEN X-RAY SOURCE, AND OPEN X-RAY SOURCE

The present invention relates to an aperture cooling structure for cooling an aperture unit (31) in which an aperture (33) is formed which restricts the passage of an electron beam (E) on an electron path (4) of this open X-ray source (1). The aperture cooling structure (10) is provided with a holding unit (34) for holding the aperture unit (31) and a heat dissipation unit (36) connected to the holding unit (34), and the heat dissipation unit (36) is provided with a heat dissipation member (37) containing a refrigerant flow path configuration unit (41) and a heat dissipation member (38) containing a refrigerant flow path configuration unit (42). A refrigerant flow path (43) is configured by combining the refrigerant flow path configuration unit (41) and the refrigerant flow path configuration unit (42).

X-ray tube casing with integral heat exchanger

An x-ray tube casing is provided which includes a housing having a heat exchanger integrally formed thereon in an additive manufacturing process. The additive manufacturing process allows for tight tolerances with regard to the structure for the casing and the internal passages of the heat exchanger to significantly reduce the size and weight of the casing. The casing additionally includes a fluid distribution manifold that effectively distributes the cooling fluid within the casing to more efficiently provide cooling to the x-ray tube insert disposed within the casing.

X-RAY TUBE COOLING SYSTEM

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder (102) and an x-ray tube housing (112) and is disposed between the electron source and the target anode (104). The shield structure has a plurality of cooling fins (110) to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of passageways formed within the shield, that provides a fluid path to the coolant (114).

COMPACT HIGH VOLTAGE X-RAY SOURCE SYSTEM AND METHOD FOR X-RAY INSPECTION APPLICATIONS

X線管冷却システム

... 【解決手段】 改善されたX線管冷却システムが開示される。本システムは、カソードシリンダー及びX線管ハウジングの間に接続され、且つ、電子源及びターゲットアノードの間に配置されたシールド構造を利用する。シールドは、X線管及び関連する構成部品の寿命を延長するべくX線管及びシールドの全体的な冷却を改善するため複数の冷却フィンを有する。冷却剤の流体のリザーバー内に浸漬されたとき、フィンは、シールドから冷却剤の流体に対流により熱転移を改善することを容易にする。冷却フィンで達成される冷却効果は、シールド内に形成された複数の通路によって提供された対流冷却システムにより更に強化される。特に、冷却ユニットは、リザーバーから流体を取り、流体を冷却し、冷却流体を冷却通路を通して循環させる。冷却剤は、通路から出力され、冷却フィンに亘って方向付けられる。幾つかの実施形態では、通路は、シールドのある区分で、他の区分よりも大きい熱転移率を提供するように配位される。また、開示されているものは、シールドをX線管ハウジングに接続するための改善されたブレーズ接合部である。 ...

X-RAY TUBES

An X-ray tube comprises an electron source in the form of a cathodE (12), and an anode (14) within a housing (10). The anode (14) is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. X-rays can be collected through a first window (16) directly behind the anode (14), or a second window (18) to one side of the anode. A retardation electrode 20 is located behind the anode 4 and is held at a potential which is negative with respect to the anode 14, and slightly positive with respect to the cathode (12). This retardation electrode (20) produces an electric field which slows down electrons passing through the anode (14) so that, when they interact with it, they are at relatively low energies. This reduces the heat load on the tube.

The rotary anode type X-ray tube assembly

X-ray tubes

The present invention is directed to an X-ray tube that has an electron source in the form of a cathode and an anode within a housing. The anode is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. A retardation electrode is located behind the anode and is held at a potential which is negative with respect to the anode and slightly positive with respect to the cathode.

Portable industrial x-ray system conveniently field-configurable for gas or liquid cooling

An x-ray system with a tubehead that can be easily configured in the field for gas or liquid cooling of the x-ray tube anode so a user need not stock or carry more than one kind of tubehead to accommodate different cooling needs.

Method and system for controlling temperatures in an x-ray imaging environment

Certain embodiments of the present invention provide a system for controlling temperatures in an x-ray imaging environment including: a first component capable of operating within a first temperature range; a second component capable of operating within a second temperature range; and a liquid-based temperature control system capable of maintaining the first component within the first temperature range and maintaining the second component within the second temperature range. In an embodiment, the first component includes an x-ray detector. In an embodiment, the second component includes an x-ray source. In an embodiment, a liquid in the liquid-based temperature control system flows through the first component before flowing through the second component. In an embodiment, a heat exchanger in the liquid-based temperature control system can regulate a temperature of a liquid in the liquid-based temperature control system. In an embodiment, the heat exchanger includes at least one thermoelectric ...

Rotating anode x-ray tube capable of efficiently discharging intense heat

There is provided a rotating anode X-ray tube capable of efficiently discharging intense heat generated when X-rays are generated and achieving a high output power, a long-time continuous operation and a long operating life of the bearings. A rotating anode X-ray tube 1 is provided with a target 3, a rotor 5, a shaft 6, rolling bearings 7 and 7 and a bearing housing 8 for supporting the rolling bearings 7 and 7. An accommodating section 10 for accommodating Ga or Ga alloy is defined by a center portion of the shaft 6 and an inner surface of the bearing housing 8 between the rolling bearings 7 and 7. Pumping grooves 14 and 14 and labyrinth grooves 15 and 15 are provided axially outwardly of the accommodating section 10 for preventing the Ga or Ga alloy from leaking.

Anordnung zum Kühlen einer Röntgenröhre

Computertomographiestrahler mit Ausgleich der thermischen Fokuswanderung

LARGE SURFACE AREA X-RAY TUBE SHIELD STRUCTURE

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure (108) that is integrated within an evacuated x-ray tube housing (107) and is disposed between the electron source (106) and the target anode (104). The shield (108) includes a plurality of cooling fins (110) to improve overall cooling of the x-ray tube and the shield (108) so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid (114), the fins facilitate improved heat transfer by convention from the shield to the coolant fluid. Fluid passageways (131, 132) are provided within the shield, with one or more epressions of "V" shaped cross sections (111B, 113B, 115B) defined on the surfaces of the fluid passageways (131) served to facilitate nucleate boiling of the coolant in the passageway, and thus increase the heat flux through the passageway to the coolant.

Anordnung zum Kühlen einer Röntgenröhre

FAN CONTROL CIRCUIT FOR X-RAY TUBE DEVICE

An X-ray system (10) includes an X-ray tube (16) that has a temperature sensor (22) coupled thereto. The temperature sensor (22) may be included in a heat exchanger (18). The temperature sensor (22) generates a temperature signal that is provided to a controller (12). The controller (12) generates a fan speed control signal that is used to control the speed of the fan (20) in response to the temperature signal.

Rotating anode x-ray tube capable of efficiently discharging intense heat

There is provided a rotating anode X-ray tube capable of efficiently discharging intense heat generated when X-rays are generated and achieving a high output power, a long-time continuous operation and a long operating life of the bearings. A rotating anode X-ray tube is provided with a target, a rotor, a shaft, rolling bearings and a bearing housing for supporting the rolling bearings. An accommodating, section for accommodating Ga or Ga alloy is defined by a center portion of the shaft and an inner surface of the bearing housing between the rolling bearings. Pumping grooves and labyrinth grooves are provided axially outwardly of the accommodating section for preventing the Ga or Ga alloy from leaking.

X-RAY TUBES

An X-ray tube comprises an electron source in the form of a cathodE (12), and an anode (14) within a housing (10). The anode (14) is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. X-rays can be collected through a first window (16) directly behind the anode (14), or a second window (18) to one side of the anode. A retardation electrode 20 is located behind the anode 4 and is held at a potential which is negative with respect to the anode 14, and slightly positive with respect to the cathode (12). This retardation electrode (20) produces an electric field which slows down electrons passing through the anode (14) so that, when they interact with it, they are at relatively low energies. This reduces the heat load on the tube.

ABSCHIRMSTRUKTUR FÜR RÖNTGENRÖHRE MIT GROSSER OBERFLÄCHE

X-RAY TUBE COOLING SYSTEM

L'invention concerne un système de refroidissement pour tube radiogène amélioré. Ce système utilise une structure de protection montée entre un cylindre de cathode et un logement de tube radiogène, et disposée entre la source d'électrons et l'anode cible. La protection comporte une pluralité d'ailettes de refroidissement destinées à améliorer le refroidissement général du tube radiogène et de la protection, de manière à prolonger la durée d'utilisation du tube radiogène et de ses composants associés. Lorsque les ailettes sont immergées dans un réservoir de fluide réfrigérant, elles assurent un meilleur transfert thermique par convection entre la protection et le fluide réfrigérant. L'effet de refroidissement obtenu à l'aide des ailettes de refroidissement est encore augmenté par un système refroidissement par convection constitué d'une pluralité de passages formés dans la protection, lesquels passages constituent une voie fluidique pour fluide réfrigérant. L'invention concerne, en particulier ...

Computed tomography system having cooling system

A computed tomography (CT) system having a cooling system includes: a gantry unit, including a rotor and an assembly component; an intake provided on a first surface of the rotor; and an outtake provided on a second surface opposite to the first surface of the rotor; wherein the gantry unit is cooled by air moving through the intake and the outtake due to a rotation force or a centrifugal force generated by a rotation movement of the rotor.

System and method for manufacturing x-ray tubes having glass envelopes utilizing a metal disk

Systems and methods are disclosed for exhausting and combined exhausting and seasoning of x-ray tubes having glass envelopes for high performance x-ray system having a rotating anode therein. The system and methods include providing a glass tubulation having a diameter greater than about 20 mm; then operatively connecting the glass tubulation to the x-ray tube glass envelope; providing a metal disk inside the glass tubulation, the metal disk having a smaller diameter than the glass tubulation, providing a vacuum to the glass tubulation; heating the anode of the x-ray tube to a temperature inside the x-ray tube envelope of about 1500 DEG C.; positioning a heater on the outside of the glass tubulation; positioning the metal disk inside the glass tubulation proximate the position of the heater on the outside of the glass tubulation; heating the metal disk to a sufficient temperature to provide for contact between the glass tubulation and the metal sealing disk; and checking for sealing contact ...

COMPACT HIGH VOLTAGE X-RAY SOURCE SYSTEM AND METHOD FOR X-RAY INSPECTION APPLICATIONS

X-ray tube and X-ray analyzing apparatus

X-ray tube and method of manufacture

The present invention relates to structures within an x-ray device including an x-ray can, an x-ray can window frame insert, a rotor sleeve, and a bearing support assembly for a rotor structure. The various structures are fabricated from a chromium alloy of copper that is essentially oxygen free copper having a minor amount of chromium, the combination of which imparts desirable qualities to the x-ray device structures, including efficient heat sink and emissivity qualities that are beneficial in an x-ray device environment. In one preferred embodiment of the present invention, oxygen free high conductivity (OFHC) copper is melted in an RF furnace in the presence of a minor amount of chromium and is either ingot cast or powder metallurgically cast into a desired article and further fabricated into a finished article.

Fan control circuit for X-ray tube device

An X-ray system (10) includes an X-ray tube (16) that has a temperature sensor (22) coupled thereto. The temperature sensor (22) may be included in a heat exchanger (18). The temperature sensor (22) generates a temperature signal that is provided to a controller (12). The controller (12) generates a fan speed control signal that is used to control the speed of the fan (20) in response to the temperature signal.

Einrichtung zum Abführen von Wärme vom Kühlfluid einer Röntgenröhre

Kühleinrichtung zur Verwendung mit einer Röntgenröhre, die auf dem Gestell von einem CT System angebracht ist, wobei das Gestell um eine Gestellachse drehbar ist, gekennzeichnet durch: einen Rahmen (54, 56), der für eine Rotation mit dem Gestell (12) um die Gestellachse (Ag) fest verbunden ist, Mittel (28, 30, 32) zur Bildung einer Strömungsbahn für Röntgenröhren-Kühlfluid zwischen der Röntgenröhre (14) und einer Stelle nahe dem Rahmen, einen Lüfter (36), der zum Bewegen einer Luftströmung über einen Abschnitt (bei 44) der Strömungsbahn angeordnet ist, zum Abführen von Wärme von dem Kühlfluid, wenn dieses durch den Abschnitt (bei 44) strömt, wobei der Lüfter (36) ein Radiallüfter ist, und Mittel für eine Drehbefestigung des Radiallüfters (36) auf den Rahmen (54, 56) derart, daß die Drehachse (Af) des Lüfters (36) im wesentlichen parallel zu der Gestellachse (Ag) ist.

X=ray tube cooling arrangement with sec. coolant circuit - Employs temp. of buffer reservoir as variable in control of operation of prim. circuit regulator valve

The tube (2) of e.g. an X-ray spectrometer is cooled by water in a sec. closed circuit contg. a pump (3), a small reservoir (4) with a temp. sensor (10), and a heat exchanger (5). The sensor is connected to a regulator (9) which opens and closes a valve (8) in the prim. circuit supplying the heat exchanger from a public drinking-water supply (6,7). The buffering effect of the reservoir prevents excessively frequent operations of the prim. circuit valve. ADVANTAGE - The tube is maintained at constant temp. with little consumption of cooling water in a low-vol. structure.Eg for X-ray spectrometer.

X-ray generation apparatus

An X-ray generation apparatus includes an electron gun configured to emit an electron beam, a rotary anode unit having a target generating an X-ray by receiving the electron beam and configured to rotate the target, a magnetic lens having a coil configured to generate a magnetic force acting on the electron beam between the electron gun and the target, and a wall portion disposed between the target and the coil so as to face the target. The wall portion is formed with an electron passage hole through which the electron beam passes and a flow path configured to allow a coolant to flow.

Rotating-anode X-ray tube assembly with cooling system

According to one embodiment, a rotating-anode X-ray tube assembly includes a rotating-anode X-ray tube, a housing, a coolant, a first shell, an X-ray shielding member, a second shell and an air introduction unit. The first shell is provided apart from the housing and an envelope of the rotating-anode X-ray tube, and surrounds the envelope. The X-ray shielding member is provided between the first shell and the housing and apart from the housing. The second shell is provided apart from the housing to cause an airway to be formed between the second shell and the housing. The air introduction unit produces a flow of air in the airway.

Portable computer tomography device

Eine Computertomographievorrichtung weist ein tragbares Gehäuse und eine Mehrzahl von in dem Gehäuse angeordneten Komponenten auf, die ausgebildet sind, um Signale zu erzeugen, die eine computertomographische Darstellung eines Objekts ermöglichen. Eine Abschirmungseinrichtung ist vorgesehen, die einen abgeschirmten Raum in dem tragbaren Gehäuse definiert, um die Umgebung vor in dem tragbaren Gehäuse erzeugter Röntgenstrahlung abzuschirmen. Die Komponenten, die Röntgenstrahlung ausgesetzt sind, sind in dem abgeschirmten Raum angeordnet. Zumindest eine der Komponenten ist außerhalb des abgeschirmten Raums in dem Gehäuse angeordnet.

System and method for manufacturing X-ray tubes having glass envelopes

Systems and methods are disclosed for exhausting and combined exhausting and seasoning of x-ray tubes having glass envelopes for a high performance x-ray system having a rotating anode therein. The methods include providing a glass tubulation having a diameter greater than about 20 mm, then operatively connecting the glass tubulation to the x-ray tube glass envelope, providing a glass sealing cup inside the glass tubulation, the glass sealing cup having a smaller diameter than the glass tubulation, providing a vacuum to the glass tubulation, positioning a heater on the outside of the glass tubulation, heating the anode of the x-ray tube to a temperature inside the x-ray tube glass envelope of about 1500° C., positioning the glass sealing cup inside the glass tubulation proximate the position of the heating means on the outside of the glass tubulation, heating the glass tubulation proximate the glass sealing cup to about 1300° C., checking for sealing contact between the glass tubulation ...

X-ray emitting unit with a plurality of openings for x-rays and for cooling and electrically insulating liquid and radiological apparatuses

The X-ray emitting unit (100) comprises a box-shaped container (110) with a chamber inside it, and an X-ray tube located in the chamber; the box-shaped container (110) is provided with an opening (111) for X-rays and a plurality of openings for cooling and electrically insulating liquid; having: a first main opening (112A) for the inlet of cooling and electrically insulating liquid, a second main opening for the outlet of cooling and electrically insulating liquid; furthermore, the box-shaped container (110) has: at least one secondary opening (114A) of the first type for cooling and electrically insulating liquid and/or at least one secondary opening (116A, 116B) of the second type for cooling and electrically insulating liquid.

LARGE SURFACE AREA X-RAY TUBE SHIELD STRUCTURE

Apparatus for removing heat from X-ray tube cooling fluid

In an arrangement for cooling an X-ray tube mounted on the gantry of a CT system, a path of flow is established by means of conduits or the like for circulating a cooling fluid between the tube and a heat exchanger. As fluid passes through the heat exchanger, a stream of air is applied to the path of flow, by means of a radial fan, to carry heat away from the fluid. The axis of the fan is maintained in parallel relationship with the axis of the gantry, to prevent gyroscopic loading of the fan as the fan rotates about the gantry axis with the gantry. The fan comprises a device for exhausting air heated by the exchange process radially, with respect to the fan axis, to minimize fan-generated acoustic noise while maintaining good thermal performance. Fan support structure lying in the path of the exhausted air is selectively shaped to reduce air flow turbulence, and to thereby further reduce fan noise.

Rotating anode x-ray tube capable of efficiently discharging intense heat

X-ray tube device

X-ray tube and X-ray analyzing apparatus

To be able to achieve further small-sized formation and light-weighted formation and to promote a sensitivity an X-ray tube and an X-ray analyzing apparatus are disclosed, there are provided a vacuum cabinet (2) inside of which is brought into a vacuum state and which includes a window portion formed by an X-ray transmitting film through which an X-ray can be transmitted, an electron beam source (3) installed at inside of the vacuum cabinet (2) for emitting an electron beam e, a target T generating a primary X-ray X1 by being irradiated with the electron beam e and installed at inside of the vacuum cabinet 2 to be able to emit the primary X-ray X1 to an outside sample S by way of the window portion (1) , and an X-ray detecting element (4) arranged at inside of the vacuum cabinet (2) to beable to detect a fluorescent X-ray and a scattered X-ray X2 emitted from the sample S and incident from the window portion (1) for outputting a signal including energy information of the fluorescent X-ray ...

Computer tomography (CT) facility having cooling system and cooling method thereof

Microfocus X-ray tube for a high-resolution X-ray apparatus

An apparatus is provided for a micro focus X-ray tube for a high-resolution X-ray including a housing, an electron beam source for generating an electron beam and a focusing lens for focusing the electron beam on a target. The micro focus X-ray tube includes a substantially rotationally symmetrical, ring-shaped cooling chamber configured to circulate a liquid cooling medium.

X-ray tube and method of manufacture

The present invention relates to structures within an x-ray device including an x-ray can, an x-ray can window frame insert, a rotor sleeve, and a bearing support assembly for a rotor structure. The various structures are fabricated from a chromium alloy of copper that is essentially oxygen free copper having a minor amount of chromium, the combination of which imparts desirable qualities to the x-ray device structures, including efficient heat sink and emissivity qualities that are beneficial in an x-ray device environment. In one preferred embodiment of the present invention, oxygen free high conductivity (OFHC) copper is melted in an RF furnace in the presence of a minor amount of chromium and is either ingot cast or powder metallurgically cast into a desired article and further fabricated into a finished article.

X-ray tubes

Cooling system for cooling an X-ray tube

A cooling system including an X-ray tube, a cooling source, and a conduit carrying a fluid. The conduit has a first section disposed to extract heat from the X-ray tube and a second section disposed to have heat extracted by the cooling source. The X-ray tube heats the first section such that the fluid is evaporated from a liquid fluid into a gas fluid. The gas fluid flows from the first section to the second section to achieve equilibrium. The heat from the evaporated gas fluid is extracted from the conduit at the second section by the cooling source. The cooling source cools the second section such that the evaporated gas fluid condenses to liquid fluid. The liquid fluid is moved to the first section of the conduit by the gas fluid flowing from the first section to the second section.

X-Ray Tubes

An X-ray tube comprises an electron source in the form of a cathodE ( 12 ), and an anode ( 14 ) within a housing ( 10 ). The anode ( 14 ) is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. X-rays can be collected through a first window ( 16 ) directly behind the anode ( 14 ), or a second window ( 18 ) to one side of the anode. A retardation electrode 20 is located behind the anode 4 and is held at a potential which is negative with respect to the anode 14, and slightly positive with respect to the cathode ( 12 ). This retardation electrode ( 20 ) produces an electric field which slows down electrons passing through the anode ( 14 ) so that, when they interact with it, they are at relatively low energies. This reduces the heat load on the tube.

Cooling system for cooling an X-ray tube

A cooling system (26) including an X-ray tube connected to an evaporator plate (30), a cooling source (38), and a conduit (34) carrying a fluid. The conduit (34) has a first section (74) disposed to extract heat from the X-ray tube (14) and a second section (78) disposed to have heat extracted by the cooling source (38). The evaporator plate (30) heats the first section (74) such that the fluid is evaporated from a liquid fluid into a gas fluid. The gas fluid flows from the first section (74) to the second section (78) to achieve equilibrium. The heat from the evaporated gas fluid is extracted from the conduit (34) at the second section (78) by the cooling source (38). The cooling source (38) cools the second section (78) such that the evaporated gas fluid condenses to liquid fluid. The liquid fluid is moved to the first section (74) of the conduit (34) by the gas fluid flowing from the first section (74) to the second section (78).

X-RAY TUBE

DEVICE FOR REMOVING HEAT FROM X-RAY TUBE COOLING FLUID

PROBLEM TO BE SOLVED: To provide a device for removing heat from the X-ray tube cooling fluid of a computed tomograph, with a noise level lowered considerably. SOLUTION: A flow passage for circulating a cooling fluid is formed between an X-ray tube and a heat exchanger 32 by use of a pipe. When the cooling fluid flows through the heat exchanger 32, an air flow is applied to the flow passage via a radial fan 36, thereby removing heat from the cooling fluid. In this case, the rotating shaft of the fan 36 is laid approximately in parallel with a gantry shaft, and when the fan 36 rotates together with the gantry around the gantry shaft, a gyro load on the fan 36 is controlled. Also, the fan 36 includes a device for radially discharging the air heated at a heat exchange process in a radial direction relative to the fan shaft, and maintaining a proper thermal function under the minimization of an acoustic noise generated with the fan 36. A fan support structure in an exhaust air flow passage ...

X-ray tube and method of manufacture

The present invention relates to structures within an x-ray device including an x-ray can, an x-ray can window frame insert, a rotor sleeve, and a bearing support assembly for a rotor structure. The various structures are fabricated from a chromium alloy of copper that is essentially oxygen free copper having a minor amount of chromium, the combination of which imparts desirable qualities to the x-ray device structures, including efficient heat sink and emissivity qualities that are beneficial in an x-ray device environment. In one preferred embodiment of the present invention, oxygen free high conductivity (OFHC) copper is melted in an RF furnace in the presence of a minor amount of chromium and is either ingot cast or powder metallurgically cast into a desired article and further fabricated into a finished article.

A liquid metal sealing device

COOLING STRUCTURE FOR OPEN X-RAY SOURCE, AND OPEN X-RAY SOURCE

An aperture cooling structure (a cooling structure used for the open X-ray source) 10 comprises an aperture unit 31 formed with an aperture 33, a holder 34 for holding the aperture unit 31, and a heat dissipator 36 connected to the holder 34. The aperture 33 restricts an electron beam E from passing therethrough on an electron path 4 of an X-ray generator (open X-ray source). The heat dissipator 36 has a heat dissipation member 37 including a coolant flow path constituent part 41 and a heat dissipation member 38 including a coolant flow path constituent part 42. The coolant flow path constituent part 41 and the coolant flow path constituent part 42 are combined with each other, so as to construct a coolant flow path 43.

X-ray tube assembly including a first cylindrical pipe, a second cylindrical pipe, and an elastic member

According to one embodiment, an X-ray tube assembly includes a cathode, an anode target, a joint including an inflow part into which a coolant flows, a first cylindrical pipe to which the joint is connected at one end, and the anode target is joined at an outer bottom part of the other end, a second cylindrical pipe whose first end part is fitted into the inflow part, and whose second end part is arranged to eject the coolant toward the bottom part of the first cylindrical pipe, the second cylindrical pipe being placed inside the first cylindrical pipe and an elastic member provided between the first end part and the first cylindrical pipe.

X-RAY TUBE AND X-RAY ANALYZING APPARATUS

PROBLEM TO BE SOLVED: To achieve further small-sized formation and light-weighted formation and to promote a sensitivity by further efficiently detecting a fluorescent X-ray or the like in an X-ray tube and X-ray analyzing apparatus. SOLUTION: This X-ray tube includes: a vacuum cabinet 2 inside of which is brought into a vacuum state and which includes a window portion 1 formed by an X-ray transmitting film through which an X-ray can be transmitted; an electron beam source 3 installed at inside of the vacuum cabinet 2 for emitting an electron beam (e); a target T generating a primary X-ray X1 by being irradiated with the electron beam (e) and installed at inside of the vacuum cabinet 2 to be able to emit the primary X-ray X1 to an outside sample S by way of the window portion 1; and an X-ray detecting element 4 arranged at inside of the vacuum cabinet 2 to be able to detect a fluorescent X-ray and a scatted X-ray X2 emitted from the sample S and incident from the window portion 1 for outputting ...

X-Ray Tubes

An X-ray tube comprises an electron source in the form of a cathodE (12), and an anode (14) within a housing (10). The anode (14) is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. X-rays can be collected through a first window (16) directly behind the anode (14), or a second window (18) to one side of the anode. A retardation electrode 20 is located behind the anode 4 and is held at a potential which is negative with respect to the anode 14, and slightly positive with respect to the cathode (12). This retardation electrode (20) produces an electric field which slows down electrons passing through the anode (14) so that, when they interact with it, they are at relatively low energies. This reduces the heat load on the tube.

Method for enhancing thermal radiation transfer in X-ray tube components

A method is provided for enhancing heat transfer within an X-ray vacuum tube, from a hot component such as the rotating anode assembly to a cooler component such as the metal tube housing, by increasing surface emissivity of respective components. The method comprises the steps of fabricating each component from an alloy containing a specified minimum amount of chromium, and then implementing a first heating operation, wherein a fabricated component is heated in a dry hydrogen atmosphere for a first specified time period. Thereafter, a second heating operation is implemented, wherein the fabricated component is heated in a wet hydrogen atmosphere for a second specified time period. This procedure forms a refractory chromium oxide coating on the component that exhibits high absorption in the NIR region of the electromagnetic spectrum.

Cooling structure for open x-ray source, and open x-ray source

An aperture cooling structure (a cooling structure used for the open X-ray source) 10 comprises an aperture unit 31 formed with an aperture 33, a holder 34 for holding the aperture unit 31, and a heat dissipator 36 connected to the holder 34. The aperture 33 restricts an electron beam E from passing therethrough on an electron path 4 of an X-ray generator (open X-ray source). The heat dissipator 36 has a heat dissipation member 37 including a coolant flow path constituent part 41 and a heat dissipation member 38 including a coolant flow path constituent part 42. The coolant flow path constituent part 41 and the coolant flow path constituent part 42 are combined with each other, so as to construct a coolant flow path 43.

COOLING STRUCTURE FOR OPEN-TYPE X-RAY SOURCE AND OPEN-TYPE X-RAY SOURCE

PROBLEM TO BE SOLVED: To provide a cooling structure for an open-type X-ray source capable of surely suppressing X-ray focus movement resulting from thermal expansion of a component due to heat generation of an aperture part by effectively removing heat generated in an aperture part, and an open-type X-ray source provided with such a cooling structure. SOLUTION: An aperture cooling structure (cooling structure for an open-type X-ray source) 10 comprises: an aperture part 31 on which an aperture 33 is formed; a holding part 34 which holds the aperture part 31; and a heat radiation part 36 connected to the holding part 34. The aperture 33 limits passing of an electron beam E on an electron passage 4 of an X-ray generator (open-type X-ray source). The heat radiation part 36 has a heat dissipation member 37 including a coolant passage configuration part 41 and a heat dissipation member 38 including a coolant passage configuration part 42. The coolant passage configuration part 41 and the coolant ...

Rotating-anode x-ray tube assembly

X-Ray Tube Anodes

An anode for an X-ray tube includes at least one thermally conductive anode segment in contact with a rigid support member and cooling means arranged to cool the anode. The anode may further include a plurality of anode segments aligned end to end, each in contact with the support member.

Method and apparatus of differential pumping in an x-ray tube

An x-ray tube includes a casing having a cathode and an anode enclosed therein, and a separator attached to an inner wall of the casing and having a conductance limiter therein, the separator positioned to separate the anode from the cathode.

X-ray tube

An X-ray tube comprises a containment element ( 2 ) in which a cathode ( 4 ) and an anode ( 5 ) are mounted. The anode ( 5 ) comprises a first main face ( 6 ) which is substantially facing towards the cathode ( 4 ) and a second main face ( 7 ) which is facing the opposite way to the first face ( 6 ). There are also cooling means ( 8 ) applied to the second main face ( 7 ) of the anode ( 5 ) and filter means ( 10 ) for filtering, based on respective wavelengths, the X-rays emitted by the anode ( 5 ). The cooling means ( 8 ) and the filter means ( 10 ) both consist of a heat conductor element ( 9 ) which is thermally coupled with the second face ( 7 ) of the anode ( 5 ) and which is equipped with a plurality of inner micro-channels in which, in practice, a pressurised coolant liquid can flow with a turbulent motion. The containment element also comprises an X-ray emission section ( 3 ) positioned in such a way that, in practice, it receives the X-rays emitted from the second main face ( 7 ) of the anode ( 5 ) after they have passed through the filter means ( 10 ).

Radiation generating apparatus and radiation imaging apparatus

The present invention relates to a radiation generating apparatus which includes an envelope provided with a first window through which radiation is transmitted, a radiation tube housed in the envelope and provided with a second window through which the radiation is transmitted, the second window being located at a position opposite the first window, and an insulating fluid adapted to fill between the inner wall of the envelope and the radiation tube. Plural plates are arranged side by side between the first window including its periphery and the second window including its periphery by overlapping one another via gaps. The gaps is formed among the plates, thereby the withstanding voltage between the first window and second window is made larger.

COMPUTER TOMOGRAPH

A computer tomograph () for mammographic x-ray imaging includes a MBFEX tube () and a flat-bed x-ray detector (). Cathodes () are arranged in a fixed manner in rows in the MBFEX tube (), the cathodes () being provided for the field emission of electrons. Geometry, radiation density and wavelength range of an x-ray beam (b) can be set. The MBFEX tube () is movable parallel (z) to the flat-bed x-ray detector (). The flat bed x-ray detector () includes a moveable x-ray screen (), the opening of which can be set. Using the x-ray screen (), an imaging area (A) on the detector surface (D) of the flat-bed x-ray detector () can be selected and moved. Compared to conventional computer tomographs having rotating x-ray components, the computer tomograph () has a lighter and more compact design, with which a particularly small focal spot size is achieved. 1. A computer tomograph for mammographic x-ray imaging , comprising: a MBFEX tube and a flat-bed x-ray detector , wherein a plurality of cathodes is arranged in a fixed manner in rows in the MBFEX tube , the cathodes being provided for field emission of electrons , and geometry , radiation density and wavelength range of an x-ray beam (b) are set , the MBFEX tube are movable parallel to the flat-bed x-ray detector , the flat bed x-ray detector comprising a moveable x-ray screen , the opening of the moveable x-ray screen is set , and , using the x-ray screen , an imaging area on a detector surface of the flat-bed x-ray detector is selectable and moveable.2. The computer tomograph according to claim 1 , wherein the cathodes contain carbon nanotubes.3. The computer tomograph according to claim 1 , wherein the cathodes contain nanorods for emitting electrons claim 1 , which contain a substance selected from a group of substances consisting of metal oxides claim 1 , metal sulfides claim 1 , nitrides claim 1 , carbides and silicon.4. The computer tomograph according to claim 1 , wherein the MBFEX tube has a grid device arranged in a ...

X-RAY GENERATING APPARATUS FOR PHASE IMAGING

An electron source irradiates a target by inclining an electron beam at a predetermined irradiation angle θ with respect to a perpendicular to a target substrate. In this way, it is possible to extract grating-shaped X-rays in a direction perpendicular to the target substrate. The target substrate includes a substance containing a light element. On a surface of the target substrate, a plurality of grooves periodically disposed in a one-dimensional or two-dimensional direction to have a grating shape is formed. X-ray generating portions are arranged in a grating shape by being embedded in the plurality of grooves formed in the target substrate. The X-ray generating portions are made of a metal including W, Ta, Pt or Au or an alloy thereof. A depth M of the X-ray generating portions arranged in the grating shape is set within a predetermined range. The generation efficiency of X-rays for phase imaging is improved. 1. An X-ray generating apparatus for performing X-ray phase imaging using an X-ray excited by an electron beam irradiated from an electron source onto a target , wherein:the target includes a target substrate formed in a flat plate shape, and X-ray generating portions arranged in a grating shape on the target substrate,the electron source is configured such that a grating-shaped X-ray is allowed to be extracted in a direction perpendicular to the target substrate by irradiating the target with the electron beam inclined at a predetermined irradiation angle (θ) with respect to a perpendicular to the target substrate,the target substrate includes a substance containing an element having an atomic number of 14 or less,a plurality of grooves periodically disposed in a one-dimensional (1D) or two-dimensional (2D) direction to have a grating shape is formed on a surface of the target substrate,the X-ray generating portions are arranged in a grating shape by being embedded in the plurality of grooves formed on the target substrate,the X-ray generating portions ...

MULTILAYER X-RAY SOURCE TARGET

The present disclosure relates to the production and use of a multi-layer X-ray source target. In certain implementations, layers of X-ray generating material may be interleaved with thermally conductive layers. To prevent delamination of the layers, various mechanical, chemical, and structural approaches are related, including approaches for reducing the internal stress associated with the deposited layers and for increasing binding strength between layers. 1. An X-ray source , comprising:an emitter configured to emit an electron beam; and at least one X-ray generating layer comprising X-ray generating material, wherein the X-ray generating material within each X-ray generating layer varies in density within the respective X-ray generating layer; and', 'at least one thermally-conductive layer in thermal communication with each X-ray generating layer., 'a target configured to generate X-rays when impacted by the electron beam, the target comprising2. The X-ray source of claim 1 , further comprising a thermally-conductive substrate on which a bottommost X-ray generating layer is formed.3. The X-ray source of claim 1 , wherein the X-ray generating material comprises one or more of tungsten claim 1 , molybdenum claim 1 , titanium-zirconium-molybdenum alloy (TZM) claim 1 , tungsten-rhenium alloy claim 1 , copper-tungsten alloy claim 1 , chromium claim 1 , iron claim 1 , cobalt claim 1 , copper claim 1 , silver.4. The X-ray source of claim 1 , wherein the thermally-conductive layers comprise one or more of highly ordered pyrolytic graphite (HOPG) claim 1 , diamond claim 1 , beryllium oxide claim 1 , silicon carbide claim 1 , copper-molybdenum claim 1 , copper claim 1 , tungsten-copper alloy claim 1 , or silver-diamond.5. The X-ray source of claim 1 , wherein each X-ray generating layer varies in density so as to have greater density in earlier deposited regions than in at least a portion of the later deposited regions.6. The X-ray source of claim 1 , further comprising ...

X-RAY DIAGNOSTIC APPARATUS

An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube holding device, an X-ray detector, a rotator, an arm, and a tubular body. The X-ray tube holding device generates X-rays. The X-ray detector detects the X-rays. The rotator holds the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis. The arm holds the rotator and the X-ray detector and is rotatable about a second rotation axis different from the first rotation axis. The tubular body connects the X-ray tube holding device and a device away from the arm. The arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced. 1. An X-ray diagnostic apparatus comprising:an X-ray tube holding device configured to generate X-rays;an X-ray detector configured to detect the X-rays;a rotator configured to hold the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis;an arm configured to hold the rotator and the X-ray detector and rotatable about a second rotation axis different from the first rotation axis; anda tubular body configured to connect the X-ray tube holding device and a device away from the arm,wherein the arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced.2. The apparatus of claim 1 , further comprising:a control circuitry configured to control to rotate the rotator about the first rotation axis in the direction in which the torsion of the tubular body caused by the rotation of the arm is reduced, in accordance with the rotation of the arm about the second rotation axis.3. The apparatus of claim 2 , further comprising:a holding mechanism configured to hold the arm so as to be rotatable about the second rotation axis,wherein the tubular body ...

Method of performing x-ray spectroscopy and x-ray absorption spectrometer system

A method for performing x-ray absorption spectroscopy and an x-ray absorption spectrometer system to be used with a compact laboratory x-ray source to measure x-ray absorption of the element of interest in an object with both high spatial and high spectral resolution. The spectrometer system comprises a compact high brightness laboratory x-ray source, an optical train to focus the x-rays through an object to be examined, and a spectrometer comprising a single crystal analyzer (and, in some embodiments, also a mosaic crystal) to disperse the transmitted beam onto a spatially resolving x-ray detector. The high brightness/high flux x-ray source may have a take-off angle between 0 and 105 mrad. and be coupled to an optical train that collects and focuses the high flux x-rays to spots less than 500 micrometers, leading to high flux density. The coatings of the optical train may also act as a “low-pass” filter, allowing a predetermined bandwidth of x-rays to be observed at one time while excluding the higher harmonics.

COOLING ARRANGEMENT FOR X-RAY GENERATOR

In a device for generating X-rays or electron beams the cathode of the device is mounted on a ceramic insulator which becomes hot during operation, and the ceramic insulator is cooled by a fluid coolant flowing around the outside of the insulator at the remote end of the insulator, away from the cathode. The coolant conduit can be formed by flange rings, soldered directly on to the surface of the insulator, and the conduit may be shaped such that the coolant is in direct contact with the insulator. A method for manufacturing the de ice is also described.

X-RAY SOURCE, HIGH-VOLTAGE GENERATOR, ELECTRON BEAM GUN, ROTARY TARGET ASSEMBLY, ROTARY TARGET, AND ROTARY VACUUM SEAL

Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode. 1. An electron beam apparatus , comprising:a vacuum enclosure; andan electron beam generator, mounted in the vacuum enclosure,the electron beam generator comprising a high-voltage electrode and an electron emission source mounted at the high-voltage electrode to produce an electron beam, wherein:the electron beam generator further comprises a control module mounted within the electron beam generator;the electron beam apparatus further comprises a remote module mounted relative to a wall ...

X-RAY SOURCE, HIGH-VOLTAGE GENERATOR, ELECTRON BEAM GUN, ROTARY TARGET ASSEMBLY, ROTARY TARGET, AND ROTARY VACUUM SEAL

Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode. 1. A rotary vacuum seal for a rotating shaft , the seal comprising:a bore for accommodating the shaft and having a terminal aperture at each of high pressure and low pressure ends;a chamber surrounding and circumferentially adjoining the bore at a position intermediate between the high pressure and low pressure ends; anda flow path extending from the chamber to a port suitable for connection to a vacuum pump,{'sup': −5', '−3, 'wherein the bore and shaft are dimensioned such that a ...

X-RAY SOURCE WITH ROTATING ANODE AT ATMOSPHERIC PRESSURE

An x-ray source includes an anode assembly having at least one surface configured to rotate about an axis, the at least one surface in a first region. The x-ray source further includes an electron-beam source configured to emit at least one electron beam configured to bombard the at least one surface of the anode assembly. The electron-beam source includes a housing, a cathode assembly, and a window. The housing at least partially bounds a second region and comprises an aperture. The cathode assembly is configured to generate the at least one electron beam within the second region. The window is configured to hermetically seal the aperture, to maintain a pressure differential between the first region and the second region, and to allow the at least one electron beam to propagate from the second region to the first region 1. An x-ray source comprising:an anode assembly comprising at least one surface configured to rotate about an axis, the at least one surface in a first region; a housing at least partially bounding a second region, the housing comprising an aperture;', 'a cathode assembly configured to generate the at least one electron beam within the second region; and', 'a window configured to hermetically seal the aperture, to maintain a pressure differential between the first region and the second region, and to allow the at least one electron beam to propagate from the second region to the first region., 'an electron-beam source configured to emit at least one electron beam configured to bombard the at least one surface of the anode assembly, the electron-beam source comprising2. The x-ray source of claim 1 , wherein the window has a thickness in a range of 0.1 micron to 10 microns and a width in a range of 10 microns to 2000 microns.3. The x-ray source of claim 1 , wherein the window comprises at least one material in the group consisting of: diamond claim 1 , silicon claim 1 , silicon nitride claim 1 , boron nitride claim 1 , boron carbide claim 1 , ...

Combined Machine Head and Ray Imaging Device

The present application provides a combined machine head and a ray imaging device, wherein the combined machine head comprises: a housing, having an enclosed cavity; a ray tube, arranged in the enclosed cavity; and a pump and a pipe, arranged in the enclosed cavity; wherein the pump is arranged on one side away from an anode of the ray tube, the pipe has one end connected with an outlet of the pump and another end extending to be near the anode of the ray tube; or the pump is arranged near the anode of the ray tube, the pipe has one end connected to an inlet of the pump and another end extending to one side away from the anode of the ray tube. In the present application, when the pump works, insulation medium at positions away from the anode is drawn to the vicinity of the anode, and the insulation medium in the enclosed cavity is driven to cycle, so as to gradually reduce the temperature difference between the position of the anode and other positions, allowing the temperature gradient of the insulation medium in the enclosed cavity to be distributed more uniformly. 1. A combined machine head , comprising:a housing, having an enclosed cavity;a ray tube, arranged in the enclosed cavity; anda pump and a pipe, arranged in the enclosed cavity;wherein the pump is arranged on one side away from an anode of the ray tube, the pipe has a first end connected with an outlet of the pump and a second end extending to be near the anode of the ray tube; or the pump is arranged near the anode of the ray tube, the pipe has a first end connected to an inlet of the pump and a second end extending to one side away from the anode of the ray tube.2. The combined machine head of claim 1 , wherein claim 1 , the housing comprises a cover plate and a housing body claim 1 , and the combined machine head further comprises:a first insulating barrier, arranged in the enclosed cavity and dividing the enclosed cavity into a first cavity and a second cavity which are communicated;the cover plate ...

RADIATION ANODE TARGET SYSTEMS AND METHODS

Presented systems and methods facilitate efficient and effective generation and delivery of radiation. A radiation generation system can comprise: a particle beam gun, a high energy dissipation anode target (HEDAT); and a liquid anode control component. In some embodiments, the particle beam gun generates an electron beam. The HEDAT includes a solid anode portion (HEDAT-SAP) and a liquid anode portion (HEDAT-LAP) that are configured to receive the electron beam, absorb energy from the electron beam, generate a radiation beam, and dissipate heat. The radiation beam can include photons that can have radiation characteristics (e.g., X-ray wavelength, ionizing capability, etc.). The liquid anode control component can control a liquid anode flow to the HEDAT. The HEDAT-SAP and HEDAT-LAP can cooperatively operate in radiation generation and their configuration can be selected based upon contribution of respective HEDAT-SAP and the HEDAT-LAP characteristics to radiation generation. 1. A therapeutic radiation generation system comprising:a particle beam gun that generates an electron beam;a high energy dissipation anode target (HEDAT), configured to receive the electron beam, absorb energy from the electron beam, generate a radiation beam, and dissipate heat, wherein the (HEDAT) includes a plurality of channels; anda liquid anode control component configured to control a flow of a liquid anode to the HEDAT.2. The therapeutic radiation generation system of claim 1 , wherein the plurality of channels are configured to accommodate a plurality of liquid anode flows.3. The therapeutic radiation generation system of claim 2 , wherein a first one of the plurality of channels is configured to accommodate a first liquid anode flow and a second one of the plurality of channels is configured to accommodate a second liquid anode flow.4. The therapeutic radiation generation system of claim 2 , wherein the first liquid anode flow and the second liquid anode flow are different.5. The ...

DATA MONITORING AND MANAGEMENT DEVICE AND EVENT DATA MONITORING METHOD

According to one embodiment, a device includes an instruction unit which records in a recording medium, event-related data of when an event is detected and monitoring data of when the event occurs, and a display data output unit which outputs from the recording medium and plays as display data, the event-related data and a part of the monitoring data corresponding to the event-related data. If there is a specification input to the displayed event-related data, the monitoring data corresponding to the event-related data is played. 1. A data monitoring and management device comprising:a network interface to obtain event-related data when at least a sensor detects an event being received as input;a data management unit to (i) control at least an operation of a camera and an operation of a microphone and (ii) send one or both of first monitoring data from the camera and second monitoring data from the microphone to a recording unit;a system controller controlling the data management unit, wherein an instruction unit to urge the event-related data of when the event is detected and the one or both of the first monitoring data and the second monitoring data of when the event occurs to be recorded in the recording unit;', 'a filtering unit filtering the event-related data; and', 'a display data output unit reproducing the event-related data and a part of the monitoring data of the event corresponding to the event-related data, which are extracted by the filtering unit, from the recording unit and outputting the data as display data, and, 'the system controller includes'}the filtering unit receives conditions for the filtering from a network.2. The data monitoring and management device of claim 1 , wherein the system controller receives an instruction to require monitoring data from the network.3. The data monitoring and management device of claim 2 , wherein the system controller receives an instruction “to designate an event to be checked” and/or an instruction “to check ...

X-RAY GENERATING APPARATUS AND RADIOGRAPHY SYSTEM

Provided is an X-ray generating apparatus, which includes: an X-ray generating tube configured to emit X-rays through a first window; an outer case configured to contain the X-ray generating tube and provided with a second window transmitting the X-rays at a position facing the first window; an insulating fluid with which an unoccupied space of the outer case is filled; an insulating member located between the first window and the second window and provided with an opening in an irradiation area of the X-ray through the first window; and an insulating third window removably fit into the opening of the insulating member, wherein a linear expansion coefficient of the third window is greater than a linear expansion coefficient of the insulating member, and the third window and the first window face each other via a gap through which the insulating fluid is flowable. 1. An X-ray generating apparatus , comprising:an X-ray generating tube provided with a first window transmitting X-rays and configured to emit the X-rays through the first window;an outer case configured to contain the X-ray generating tube and provided with a second window transmitting the X-rays at a position facing the first window;an insulating fluid with which an unoccupied space of the outer case is filled;an insulating member located between the first window and the second window and provided with an opening in an irradiation area of the X-rays through the first window; andan insulating third window removably fit into the opening of the insulating member, whereina linear expansion coefficient of the third window is greater than a linear expansion coefficient of the insulating member, andthe third window and the first window face each other via a gap in which the insulating fluid is flowable.2. The X-ray generating apparatus according to claim 1 , wherein a thickness of the third window is less than a length of an area in which the third window and the insulating member face each other in a cross- ...

X-RAY SOURCE, HIGH-VOLTAGE GENERATOR, ELECTRON BEAM GUN, ROTARY TARGET ASSEMBLY, ROTARY TARGET, AND ROTARY VACUUM SEAL

Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode. 1. A rotary x-ray emission target for generating x-ray radiation under electron beam irradiation , comprising:a support hub defining a predetermined axis of rotation of the target;a plurality of target plates, each comprising a target material, supported on the hub, wherein the plates are arranged on the hub to provide an annular target region about the axis of rotation; anda plurality of shield elements supported on the hub and arranged to overlie portions of the target region at which ...

X-RAY SOURCE, HIGH-VOLTAGE GENERATOR, ELECTRON BEAM GUN, ROTARY TARGET ASSEMBLY, ROTARY TARGET, AND ROTARY VACUUM SEAL

Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode. 1. A rotary target assembly for an x-ray source , the assembly comprising:an x-ray emission target;a vacuum housing;a shaft mounting the target and traversing a wall of the vacuum housing;a bearing rotatably supporting the shaft; anda bearing housing supporting the bearing and mounted on the wall of the vacuum housing,wherein the bearing housing is mounted on the wall of the vacuum housing by a torque-limiter such that when the torque between the bearing housing and the vacuum housing ...

X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal

Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.

X-RAY SOURCE, HIGH-VOLTAGE GENERATOR, ELECTRON BEAM GUN, ROTARY TARGET ASSEMBLY, ROTARY TARGET, AND ROTARY VACUUM SEAL

Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode. 1. A rotary x-ray emission target for generating x-ray radiation under electron beam irradiation , comprising:a support hub defining a predetermined axis of rotation of the target, anda plurality of target plates, each comprising target material, supported on the hub, wherein the plates are arranged on the hub to provide an annular target region about the axis of rotation, wherein:the hub has a first radially inner region of reduced thickness and a second radially outward region of ...

RADIATION ANODE TARGET SYSTEMS AND METHODS

Presented systems and methods facilitate efficient and effective generation and delivery of radiation. A radiation generation system can comprise: a particle beam gun, a high energy dissipation anode target (HEDAT); and a liquid anode control component. In some embodiments, the particle beam gun generates an electron beam. The HEDAT includes a solid anode portion (HEDAT-SAP) and a liquid anode portion (HEDAT-LAP) that are configured to receive the electron beam, absorb energy from the electron beam, generate a radiation beam, and dissipate heat. The radiation beam can include photons that can have radiation characteristics (e.g., X-ray wavelength, ionizing capability, etc.). The liquid anode control component can control a liquid anode flow to the HEDAT. The HEDAT-SAP and HEDAT-LAP can cooperatively operate in radiation generation and their configuration can be selected based upon contribution of respective HEDAT-SAP and the HEDAT-LAP characteristics to radiation generation. 1. A therapeutic radiation generation system comprising:a particle beam gun that generates an electron beam;a high energy dissipation anode target (HEDAT), wherein the HEDAT includes a solid anode portion (HEDAT-SAP) and a liquid anode portion (HEDAT-LAP) that are configured to receive the electron beam, absorb energy from the electron beam, generate a radiation beam, and dissipate heat, anda liquid anode control component configured to control a flow of a liquid anode to the HEDAT.2. The therapeutic radiation generation system of claim 1 , wherein the radiation beam includes X-rays.3. The therapeutic radiation generation system of claim 1 , wherein configuration of the HEDAT-SAP and the HEDAT-LAP are selected based upon respective contributions the HEDAT-SAP and the HEDAT-LAP characteristics to radiation generation.4. The therapeutic radiation generation system of claim 1 , wherein the HEDAT-SAP and HEDAT-LAP cooperatively operate in radiation beam generation.5. The therapeutic radiation ...

HIGH BRIGHTNESS X-RAY REFLECTION SOURCE

An x-ray target, x-ray source, and x-ray system are provided. The x-ray target includes a thermally conductive substrate comprising a surface and at least one structure on or embedded in at least a portion of the surface. The at least one structure includes a thermally conductive first material in thermal communication with the substrate. The first material has a length along a first direction parallel to the portion of the surface in a range greater than 1 millimeter and a width along a second direction parallel to the portion of the surface and perpendicular to the first direction. The width is in a range of 0.2 millimeter to 3 millimeters. The at least one structure further includes at least one layer over the first material. The at least one layer includes at least one second material different from the first material. The at least one layer has a thickness in a range of 2 microns to 50 microns. The at least one second material is configured to generate x-rays upon irradiation by electrons having energies in an energy range of 0.5 keV to 160 keV 1. An x-ray target comprising:a thermally conductive substrate comprising a surface; and a thermally conductive first material in thermal communication with the substrate, the first material having a length along a first direction parallel to the portion of the surface in a range greater than 1 millimeter and a width along a second direction parallel to the portion of the surface and perpendicular to the first direction, the width in a range of 0.2 millimeter to 3 millimeters; and', 'at least one layer over the first material, the at least one layer comprising at least one second material different from the first material, the at least one layer having a thickness in a range of 2 microns to 50 microns, the at least one second material configured to generate x-rays upon irradiation by electrons having energies in an energy range of 0.5 keV to 160 keV., 'at least one structure on or embedded in at least a portion of the ...

COMPACT SELF-RESONANT X-RAY SOURCE

The present invention discloses an X-ray source which uses a rectangular cavity resonator, which is excited with a microwave TEmode. The present invention also can be used as a source of cyclotron radiation, using the cylindrical cavity, but carrying out some structural changes thereof to achieve this purpose. This system allows significantly increasing the energy of the electron beam by compensating the diamagnetic force by an axially symmetric electrostatic field. The electrostatic field is generated longitudinally by ring-type electrodes placed inside the cavity, preferably in the node planes of the TE11p electric field. The electrodes should be made transparent to the microwave field, such as graphite. 1. An X-ray source , characterized by:a—a resonant cavity with a longitudinal axis extending from one end of the cavity to the other;b—an electron gun located at one end of the resonant cavity;c—a metallic target coupled to the resonant cavity, close to the other end of the cavity;d—a microwave field energizing system coupled to the resonant cavity;e—at least one magnetic field source that generates a magnetic field that increases generally along the longitudinal axis of the cavity, starting from the end of the electron gun to the opposite end; andf—a window incorporated to the surface of the resonant cavity which is transparent to X rays.2. An X-ray source according to wherein the magnetic field strength at the electron's point of injection is equal to the value of the classical cyclotron resonance.3. An X-ray source according to wherein the magnetic field is axially symmetric claim 1 , static and non-homogeneous.4. An X-ray source according to wherein the electron gun is a LaBtype electron emitter and injects an electron beam with about 10 keV of energy.5. An X-ray source according to claim 1 , wherein the metallic target has an internal cooling channel.6. An X-ray source according to wherein the metallic target is molybdenum.7. An X-ray source according to ...

High-Power X-Ray Sources and Methods of Operation

The present specification discloses a high power continuous X-ray source having a rotating target assembly that is cooled by circulation of a liquid material in contact with the target assembly, whereby the target assembly has a front surface being impinged by electrons and a mechanism for rotating the target assembly. The cooling liquid is always in contact with at least one surface of the target for dissipating the heat generated by the energy deposited by the stream of electrons, thereby lowering the temperature of the target to allow for continuous operation. 1. A high power radiation production target assembly comprising:a target sub-assembly having a copper body and a target positioned along a periphery of the copper body, wherein said target is impinged by a stream of particles to produce radiation;a plurality of paddles positioned on said copper body;a stream of water to propel said paddles to cause rotation and cooling of said copper body; and,at least one coupling to provide vacuum sealing under rotation.2. The high power radiation production target assembly of claim 1 , wherein said stream of particles comprises electrons that impinge upon the rotating target to produce X-rays.3. The high power radiation production target assembly of claim 2 , wherein the energy of the electrons is 6 MV or higher.4. The high power radiation production target assembly of claim 1 , wherein the target is a ring made of tungsten.5. The high power radiation production target assembly of claim 1 , wherein the target assembly further comprises one or more flow directors for directing the stream of liquid in a predefined direction and for propelling the plurality of paddles.6. The high power radiation production target assembly of claim 1 , wherein said liquid is water.7. The high power radiation production target assembly of claim 1 , wherein the at least one coupling is a ferro-fluidic coupling for providing vacuum sealing.8. A high power radiation production target assembly ...

DATA MONITORING AND MANAGEMENT DEVICE AND EVENT DATA MONITORING METHOD

According to one embodiment, a device includes an instruction unit which records in a recording medium, event-related data of when an event is detected and monitoring data of when the event occurs, and a display data output unit which outputs from the recording medium and plays as display data, the event-related data and a part of the monitoring data corresponding to the event-related data. If there is a specification input to the displayed event-related data, the monitoring data corresponding to the event-related data is played. 1. A data monitoring and management device comprising:a network interface to obtain event-related data when at least a sensor detects an event being received as input;a data management unit to (i) control at least an operation of a camera and an operation of a microphone and (ii) send one or both of first monitoring data from the camera and second monitoring data from the microphone to a recording unit;a system controller controlling the data management unit, wherein an instruction unit to urge the event-related data of when the event is detected and the one or both of the first monitoring data and the second monitoring data of when the event occurs to be recorded in the recording unit;', 'a filtering unit filtering the event-related data; and', 'a display data output unit reproducing the event-related data and a part of the monitoring data of the event corresponding to the event-related data, which are extracted by the filtering unit, from the recording unit and outputting the data as display data, and, 'the system controller includes'}the filtering unit receives conditions for the filtering from a network.2. The data monitoring and management device of claim 1 , wherein the system controller receives an instruction to require monitoring data from the network.3. The data monitoring and management device of claim 2 , wherein the system controller receives an instruction “to designate an event to be checked” and/or an instruction “to check ...

BIASED CATHODE ASSEMBLY OF AN X-RAY TUBE WITH IMPROVED THERMAL MANAGEMENT AND A METHOD OF MANUFACTURING SAME

Various systems and methods are provided for a biased cathode assembly of an X-ray tube with improved thermal management and a method of manufacturing same. In one example, a cathode assembly of an X-ray tube comprises an emitter assembly including an emitter coupled to an emitter support structure, and an electrode assembly including an electrode stack and a plurality of bias electrodes. The emitter assembly including a plurality of independent components that are coupled together. The electrode assembly including a plurality of independent components that are coupled together, and the emitter assembly being coupled to the electrode assembly.

System And Method For Multi-Source X-Ray-Based Imaging

An imaging module includes a plurality of cathodes and respective gates, each cathode configured to generate a separate beam of electrons directed across a vacuum chamber and each gate matched to at least one respective cathode to enable and disable each separate beam of electrons from being directed across the vacuum chamber. A target anode is fixed within the vacuum chamber and arranged to receive the separate beam of electrons from each of the plurality of cathodes and, therefrom, generate a beam of x-rays. A deflection system is arranged between the plurality of cathodes and the target anode to generate a variable magnetic field to control a path followed by each of the separate beams of electrons to the target anode. 1. An imaging system comprising:a platform for receiving a subject to be imaged using the imaging system; a vacuum chamber;', 'a plurality of cathodes and respective gates, each cathode configured to generate a separate beam of electrons directed across the vacuum chamber and each gate matched to at least one respective cathode to enable and disable each separate beam of electrons from being directed across the vacuum chamber;', 'a target anode arranged to receive the separate beam of electrons from each of the plurality of cathodes and, therefrom, generate the beam of ionizing radiation;', 'a deflection system arranged between the plurality of cathodes and the target anode to generate a variable magnetic field to control a path followed by each of the separate beams of electrons to the target anode; and, 'a source module arranged to deliver a beam of ionizing radiation to the subject, the source module comprisinga controller configured to control operation of the plurality of cathodes and respective gates to selectively enable and disable each separate beam of electrons from being directed across the vacuum chamber and control operation of the deflection system to change the path followed by each of the separate beam of electrons to the target ...

ENHANCED THERMAL TRANSFER NOZZLE AND SYSTEM

Some embodiments include an x-ray system, comprising: a structure having a hole having an axially extending wall; and a nozzle disposed in the hole; wherein the nozzle and the axially extending wall form a plurality of axially extending helical fluid channels. Some embodiments include an x-ray system formed by shaping tubing to form a plurality of axially extending helical flutes; and forming a plurality of axially extending helical fluid channels by inserting the shaped tubing into a hole in a structure. 1. An x-ray system , comprising:a structure having a hole having an axially extending wall; anda nozzle disposed in the hole;wherein the nozzle and the axially extending wall form a plurality of axially extending helical fluid channels.2. The x-ray system of claim 1 , wherein the nozzle comprises:a cylindrical center portion; anda plurality of flutes extending radially outward from the cylindrical center portion.3. The x-ray system of claim 2 , wherein:the cylindrical center portion is hollow;the hole includes a closed end; andthe cylindrical center portion is offset from the closed end.4. The x-ray system of claim 3 , wherein the flutes are offset from the closed end.5. The x-ray system of claim 3 , wherein:the flutes comprise an opening extending radially outward from and contiguous with the hollow portion of the cylindrical center portion.6. The x-ray system of claim 2 , wherein a wall thickness of the cylindrical center portion is substantially the same as a wall thickness of the flutes.7. The x-ray system of claim 2 , wherein the flutes contact the axially extending wall.8. The x-ray system of claim 2 , wherein a ratio of a width of the axially extending helical fluid channels to a width of the flutes is greater than one.9. The x-ray system of claim 2 , wherein a width of at least one of the axially extending helical fluid channels varies along a length of the nozzle.10. The x-ray system of claim 1 , wherein:the axially extending wall comprises a plurality of ...

ANODE STACK

There is provided an anode stack for cooling and electrically insulating a high voltage anode of an X-ray device. The anode stack has at least a conductor member and a dielectric member, and the conductor member has a main body and a peripheral portion. The dielectric member overlies and couples with the main body of the conductor member at one surface. At an opposing surface of the main body of the conductor member, an end of the high voltage anode is coupled thereto in use. The peripheral portion of the conductor member has an annular region that surrounds at least a part of the dielectric member and which is spaced therefrom. 1. An anode stack for cooling and electrically insulating a high voltage anode of an X-ray device , the anode stack comprising:a conductor member and a dielectric member, the conductor member having a main body and a peripheral portion,wherein the dielectric member overlies the main body of the conductor member,wherein the main body of the conductor member is arranged to couple with the dielectric member at one surface, and with an end of the high voltage anode at an opposing surface in use, andwherein the peripheral portion of the conductor member comprises an annular region that surrounds at least a part of the dielectric member and which is spaced therefrom.2. An anode stack according to claim 1 , wherein the annular region of the peripheral portion of the conductor member surrounds a joining region between the dielectric member and the main body of the conductor member.3. An anode stack according to claim 2 , wherein the joining region has a perimeter surface comprising surfaces of the dielectric member and of the main body of the conductor member.4. An anode stack according to claim 3 , wherein the joining region is cylindrically shaped.5. An anode stack according to claim 3 , wherein all normal axes to the perimeter surface of the joining region are coplanar or lie in parallel planes.6. An anode stack according to claim 3 , wherein an ...

System And Method For Multi-Source X-Ray-Based Imaging

An imaging module includes a plurality of cathodes and respective gates, each cathode configured to generate a separate beam of electrons directed across a vacuum chamber and each gate matched to at least one respective cathode to enable and disable each separate beam of electrons from being directed across the vacuum chamber. A target anode is fixed within the vacuum chamber and arranged to receive the separate beam of electrons from each of the plurality of cathodes and, therefrom, generate a beam of x-rays. A deflection system is arranged between the plurality of cathodes and the target anode to generate a variable magnetic field to control a path followed by each of the separate beams of electrons to the target anode. 1. An imaging system comprising:a platform for receiving a subject to be imaged using the imaging system; a vacuum chamber;', 'at least one cathode configured to generate a beam of electrons directed across the vacuum chamber;, 'a source module arranged to deliver a beam of ionizing radiation to the subject, the source module comprising a non-rotating target anode arranged to receive the beam of electrons from each the at least one cathodes and, therefrom, generate the beam of ionizing radiation;', 'a deflection system arranged between the cathode and the non-rotating target anode to generate a variable magnetic field to control a path followed by the beam of electrons to the target anode; and, 'at least one gate configured to enable and disable the beam of electrons from being directed across the vacuum chamber;'}a controller configured to control operation of the at least one cathode and at least one gate to selectively enable and disable the beam of electrons from being directed across the vacuum chamber and control operation of the deflection system to change the path followed by the beam of electrons to the non-rotating target anode based.2. The system of wherein the deflection system includes at least one deflection coil configured to create ...

ANALYTICAL X-RAY TUBE WITH HIGH THERMAL PERFORMANCE

An analytical X-ray tube with an anode target material that emits characteristic X-rays in response to excitation by an electron beam may include any of several advantageous features. The target material is deposited on a diamond substrate layer, and a metal carbide intermediate layer may be provided between the target material and substrate that provides enhanced bonding therebetween. An interface layer may also be used that provides an acoustic impedance matching between the target material and the substrate. For a low thermal conductivity target material, a heat dissipation layer of a higher thermal conductivity material may also be included between the target material and substrate to enhance thermal transfer. The target material may have a thickness that corresponds to a maximum penetration depth of the electrons of the electron beam, and the structure may be such that a predetermined temperature range is maintained at the substrate interface. 1. An X-ray tube comprising:a target anode comprising a target material that emits characteristic X-rays in response to excitation by an electron beam;a diamond substrate upon which the target anode is located; andan intermediate layer between the diamond substrate and the target material, the intermediate layer comprising a metal carbide.2. An X-ray tube according to wherein the target material comprises one of copper and silver.3. An X-ray tube according to wherein an operating temperature at an interface with the diamond substrate is between 600 K and 800 K.4. An X-ray tube according to further comprising an interface layer located between the target material and substrate claim 1 , the interface layer comprising a material having an acoustic impedance Zthat closely matches a geometric mean √{square root over (ZZ)} of an acoustic impedance of the target material (Z) and an acoustic impedance of the diamond substrate (Z) claim 1 , such that Z/√{square root over (ZZ)} is between 0.75 and 1.5.5. An X-ray tube according to ...

STRUCTURED TARGETS FOR X-RAY GENERATION

Disclosed are targets for generating x-rays using electron beams and their method of fabrication. They comprise a number of microstructures fabricated from an x-ray target material arranged in close thermal contact with a substrate such that the heat is more efficiently drawn out of the x-ray target material. This allows irradiation of the x-ray generating substance with higher electron density or higher energy electrons, leading to greater x-ray brightness, without inducing damage or melting. The microstructures may comprise conventional x-ray target materials (such as tungsten) that are patterned at micron-scale dimensions on a thermally conducting substrate, such as diamond. The microstructures may have any number of geometric shapes to best generate x-rays of high brightness and efficiently disperse heat. In some embodiments, the target comprising microstructures may be incorporated into a rotating anode geometry, to enhance x-ray generation in such systems. 1. An x-ray target comprising:a substrate comprising a first selected material; and 'comprising a second material selected for its x-ray generation properties;', 'a plurality of discrete structures'} 'is in thermal contact with the substrate; and', 'in which each of the plurality of discrete structures'} has a thickness of less than 10 microns, and', 'each lateral dimensions of said at least one of the discrete structures', 'is less than 50 microns., 'in which at least one of the discrete structures'}2. The x-ray target of claim 1 , in whichthe plurality of discrete structures are embedded into the surface of the substrate.3. The x-ray target of claim 1 , in whichthe surface of the substrate is a planar surface.4. The x-ray target of claim 1 , in whichthe surface of the substrate comprises a predetermined non-planar topography.5. The x-ray target of claim 4 , in whichthe topography comprises at least one step.6. The x-ray target of claim 1 , in whichat least one of the plurality of discrete structuresis ...

COOLING MECHANISM FOR HIGH-BRIGHTNESS X-RAY TUBE USING PHASE CHANGE HEAT EXCHANGE

A mechanism for cooling the anode of an x-ray tube using a phase change material to transfer heat away from the anode. The x-ray tube is joined to a sealed heat exchange chamber which contains a liquid metal as a liquid to vapor phase change material (L-V PCM). The back side of the anode is exposed to an interior of the heat exchange chamber, and a jet sprayer inside the heat exchange chamber sprays a liquid of the metal onto the back side of the heated anode. The L-C PCM evaporates on that surface to carry away the heat, and the vapor then condenses back into the liquid on the cool surfaces of the heat exchange chamber. The surfaces of the heat exchange chamber may be cooled by convection cooling. Optionally, pipes containing a circulating cooling fluid may be provide inside the heat exchange chamber. 1. An x-ray generator comprising:a cathode for emitting an electron beam;an anode;alignment and focusing units for focusing and directing the electron beam onto the anode;a sealed x-ray tube enclosing the cathode, the anode and the alignment and focusing units;a sealed heat exchange chamber joined to the x-ray tube, wherein the anode either forms a section of a wall of the heat exchange chamber or is in thermal contact with a section of a wall of the heat exchange chamber;a metal as a liquid to vapor phase change material disposed inside the heat exchange chamber; anda delivery mechanism for delivering a liquid of the metal onto the section of the wall of the heat change chamber.2. The x-ray generator of claim 1 , wherein the delivery mechanism comprises a sprayer disposed inside the heat exchange chamber for spraying the liquid of the metal onto the section of the wall of the heat change chamber.3. The x-ray generator of claim 2 , wherein the delivery mechanism further comprises a pump for pumping the liquid to the sprayer.4. The x-ray generator of claim 2 , wherein the section of the wall of the heat exchange chamber is disposed horizontally at a top of the heat ...

RADIATION EMISSION DEVICE

A radiation emission device is provided. The radiation emission device may include a cathode configured to emit an electron beam and an anode configured to rotate on a shaft. The anode may be situated to receive the electron beam from the cathode. The radiation emission device may further include a rotor configured to drive the anode to rotate. The rotor may be mechanically connected to the shaft. The radiation emission device may further include a sleeve configured to support the shaft via at least one bearing. The cathode, the anode, and the rotor may be enclosed in an enclosure that is connected to the sleeve. At least a portion of the sleeve may reside outside the enclosure. 1. A radiation emission device , comprising:a cathode configured to emit an electron beam;an anode configured to rotate on a shaft, the anode being situated to receive the electron beam;a rotor configured to drive the anode to rotate, the rotor being mechanically connected to the shaft;a sleeve configured to support the shaft via at least one bearing; andan enclosure configured to enclose the cathode, the anode, and the rotor, wherein the enclosure is connected to the sleeve, and at least a portion of the sleeve resides outside of the enclosure.2. The radiation emission device of claim 1 , wherein both the enclosure and the sleeve are immersed in a first cooling medium.3. The radiation emission device of claim 1 , further comprising:a conical stator; andcoils mounted on the conical stator, wherein a magnetic field generated by the conical stator and the coils drives the rotor to rotate.4. The radiation emission device of claim 1 , wherein the rotor resides between the anode and the at least one bearing.5. The radiation emission device of claim 1 , wherein the rotor is connected to the shaft via at least one flange claim 1 , and one or more of the at least one flange is configured to support the anode.6. The radiation emission device of claim 1 , wherein the enclosure is connected to the ...

RADIATION EMISSION DEVICE

A radiation emission device is provided. The radiation emission device may include a cathode configured to emit an electron beam and an anode configured to rotate on a shaft. The anode may be situated to receive the electron beam from the cathode. The radiation emission device may further include a rotor configured to drive the anode to rotate. The rotor may be mechanically connected to the shaft. The radiation emission device may further include a sleeve configured to support the shaft via at least one bearing. The cathode, the anode, and the rotor may be enclosed in an enclosure that is connected to the sleeve. At least a portion of the sleeve may reside outside the enclosure. 120-. (canceled)21. A radiation emission device , comprising:a cathode configured to emit an electron beam;an anode configured to rotate on a shaft, the anode being situated to receive the electron beam;a rotor configured to drive the anode to rotate, the rotor being mechanically connected to the shaft;a sleeve configured to support the shaft via at least one bearing; andan enclosure configured to enclose the cathode, the anode, and the rotor, wherein the enclosure is connected to the sleeve, and at least a portion of the sleeve resides outside of the enclosure, wherein the rotor and the sleeve are arranged along an axial direction of the shaft such that the rotor is not radially covering the sleeve.22. The radiation device of claim 21 , wherein the rotor resides between the anode and the shaft along the axial direction of the shaft.23. The radiation emission device of claim 21 , further comprising:a stator; andcoils mounted on the stator, wherein the coils generate a magnetic field to drive the rotor to rotate, and the magnetic field forms an oblique angle with the axial direction of the shaft.24. The radiation emission device of claim 23 , the stator and the rotor are arranged along the axial direction of the shaft.25. The radiation emission device of claim 23 , wherein the oblique angle ...

ROTATING-ANODE X-RAY TUBE ASSEMBLY AND ROTATING-ANODE X-RAY TUBE APPARATUS

According to one embodiment, a rotating-anode X-ray tube assembly includes an X-ray tube, a stator coil, a housing, an X-ray radiation window, and a coolant. The housing includes a first divisional part which includes an X-ray radiation port and to which the X-ray tube is directly or indirectly fixed, and a second divisional part located on a side opposite to an anode target with respect to an anode target rotating mechanism and coupled to the first divisional part. A coupling surface between the first divisional part and the second divisional part is located on one plane, and is inclined to an axis, with exclusion of a direction perpendicular to the axis. 1. A rotating-anode X-ray tube assembly comprising:an X-ray tube comprising an anode target including a target layer which emits X-rays, an anode target rotating mechanism configured to rotatably support the anode target, a cathode disposed opposite to the target layer in a direction along an axis of the anode target and configured to emit electrons, and an envelope accommodating the anode target, the anode target rotating mechanism and the cathode;a stator coil configured to generate a driving force for rotating the anode target rotating mechanism;a housing comprising an X-ray radiation port opening in a direction perpendicular to the axis, and storing and holding the X-ray tube and the stator coil;an X-ray radiation window configured to close the X-ray radiation port and to take out the X-rays to an outside of the housing; anda coolant filled in a space between the X-ray tube and the housing and absorbing at least part of heat produced by the X-ray tube,wherein the housing includes a first divisional part which includes the X-ray radiation port and to which the X-ray tube is directly or indirectly fixed, and a second divisional part located on a side opposite to the anode target with respect to the anode target rotating mechanism and coupled to the first divisional part, anda coupling surface between the first ...

Cooled Stationary Anode for an X-Ray Tube

An X-ray tube with an anode comprising at least a rod shaped body with a front wall having target area as target for an electron beam on its frontal side provides a high intensity of X-ray radiation if the anode has at least one cavity extending to the front wall, the cavity having a coating of at least one inorganic salt. 1. Anode for an X-ray tube , the anode comprising:a rod shaped body with a front wall having target area on a front side of the front wall as target for an electron beam,wherein the anode has at least one evacuated cavity extending to the front wall, the cavity having a coating of at least one inorganic salt.2. The anode ofwherein the cavity comprises at least a recess extending from a rear wall to the front wall of the anode.3. The anode ofwherein at least part of the front wall comprises Molydenum alloy.4. The anode ofwherein the coating comprises at least one the members of the group consisting of Sodium Peroxide, Disodium Oxide, Silicon, Diboron Trioxide, Titanium, Copper Oxide, Cobalt Oxide, Beryllium Oxide, Dirhodium Trioxide, Trimanganese Tetraoxide and Strontium Carbonate.5. X-ray tube claim 1 , comprising: a cathode configured to emit electrons,', 'an anode with a target area, and', 'means for focusing the electrons onto the target area,, 'a wall defining an evacuated compartment that encloses at least a portion of each ofwherein the anode has at least one cavity extending to the front wall, the cavity having a coating of at least one inorganic salt.6. X-ray tube ofwherein the anode is supported by the housing and stationary relative to the compartment.7. X-ray tube ofwherein the wall is enclosed by a housing, forming a space between the compartment and the housing.8. X-ray tube of claim 7 ,wherein the X-ray tube is coupled to a source of coolant configured to circulate a coolant in the space between the compartment and the housing.9. X-ray tube claim 7 , comprising: a cathode configured to emitt electrons,', 'an anode with a target area, ...

X-RAY GENERATOR

An X-ray generator comprising a target for receiving electrons and generating X-rays, a separator for dividing an internal space of the target into a coolant inflow path and a coolant outflow path, a motor for rotating the target, and a coolant inflow path and a coolant outflow path for supplying a coolant to the coolant inflow path and recovering the coolant through the coolant outflow path, wherein the separator rotates in the same rotation direction as the target when the target rotates. In the X-ray generator in which a coolant inflow path and a coolant outflow path are provided by a separator inside a rotating target, reduced torque load and reduced vibration can be realized. 1. An X-ray generator comprising:a target for receiving electrons and generating X-rays;a separator for dividing an internal space of the target into a coolant inflow path and a coolant outflow path;a target driving device for rotating said target; anda cooling system for supplying a coolant to said coolant inflow path and recovering the coolant through said coolant outflow path; whereinsaid separator rotates in the same rotation direction as said target when the target rotates.2. The X-ray generator according to claim 1 , wherein said separator rotates at the same rotation speed as said target.3. The X-ray generator according to claim 1 , whereinsaid separator comprises a protruding spacer; andthe spacer is pressed on an inner surface of said target, whereby said separator rotates when said target rotates.4. The X-ray generator according to claim 3 , wherein said spacer is a fin for guiding a flow of said coolant.5. The X-ray generator according to claim 1 , comprising:a hollow inner tube for supporting said separator so that the separator can rotate about a center of the separator; anda hollow outer tube provided coaxially with the inner tube; whereinsaid target is supported by said outer tube;a hollow part of said inner tube is communicated with said coolant inflow path,a hollow part ...

APPARATUS AND A METHOD FOR GENERATING A FLATTENING X-RAY RADIATION FIELD

An apparatus and a method are for generating a flattening x-ray radiation field. The apparatus includes: plurality of electron accelerators for generating high-energy electron beam current; and a common target unit including a vacuum target chamber, a target and plurality of input connectors. The plurality of input connectors are connected to one side of the vacuum target chamber and the target is installed at the other side of the vacuum target chamber opposing the plurality of input connectors, the axes of which intersect in pairs at one point in an predetermined included angle. The plurality of electron accelerators are connected to the plurality of input connectors. 1. An apparatus for generating a flattening x-ray radiation field comprising:a plurality of electron accelerators configured to generate a high-energy electron beam current; anda common target unit comprising a vacuum target chamber, a target and a plurality of input connectors;wherein, the plurality of electron accelerators are connected to the plurality of input connectors, respectively.2. The apparatus according to claim 1 , wherein the plurality of input connectors are connected to one side of the vacuum target chamber and the target is installed at the other side of the vacuum target chamber opposing the plurality of input connectors claim 1 , wherein the axes of the plurality of input connectors intersect in pairs at one point at a predetermined included angle.3. The apparatus according to claim 2 , wherein the predetermined included angles of the axes of the plurality of input connectors intersect in pairs are same.4. The apparatus according to claim 2 , wherein the predetermined included angles of the axes of the plurality of input connectors intersect in pairs are different.5. The apparatus according to claim 1 , wherein claim 1 , the target is a flat structure and the electron beam current entering into the vacuum target chamber from the plurality of input connectors intersect at one point ...

X-RAY EMITTER

An x-ray emitter includes an x-ray tube and an x-ray emitter housing. In an embodiment, the x-ray tube includes an evacuated x-ray tube housing, a cathode for emitting electrons and an anode for generating x-rays as a function of the electrons. Further, in an embodiment, the x-ray emitter housing includes the x-ray tube and outside of the x-ray tube, a gaseous cooling medium. In an embodiment, the x-ray emitter further includes a compressor for a forced convection of the gaseous cooling medium for cooling the x-ray tube, a pressure ratio between the intake side and pressure side of the compressor being greater than 1.3. 1. An x-ray emitter , comprising:an x-ray tube, the x-ray tube including an evacuated x-ray tube housing, a cathode for emitting electrons and an anode for generating x-rays as a function of the electrons;an x-ray emitter housing, housing the x-ray tube including a gaseous cooling medium external to the x-ray tube; anda compressor for a forced convection of the gaseous cooling medium for cooling the x-ray tube, a pressure ratio between an intake side and a pressure side of the compressor being greater than 1.3.2. The x-ray emitter of claim 1 , wherein the x-ray emitter housing and the x-ray tube housing are embodied as turbine-shaped compressors for forcing the convection.3. The x-ray emitter of claim 1 , wherein the anode rotates with a shaft claim 1 , rotating relative to the x-ray emitter housing claim 1 , wherein the compressor includes a number of turbine blades for forcing the convection and wherein the number of turbine blades are mounted on the rotating shaft so that a rotational speed of the anode and a rotational speed of compressor depend on one another.4. The x-ray emitter of claim 3 , wherein the x-ray tube is embodied as a rotary piston x-ray tube claim 3 , and wherein a rotational speed of the x-ray tube housing corresponds to the rotational speed of the anode.5. The x-ray emitter of claim 3 , wherein the x-ray tube is embodied as a ...

High temperature annealing in x-ray source fabrication

The present disclosure relates to multi-layer X-ray sources having decreased hydrogen within the layer stack and/or tungsten carbide inter-layers between the primary layers of X-ray generating and thermally-conductive materials. The resulting multi-layer target structures allow increased X-ray production, which may facilitate faster scan times for inspection or examination procedures.

X-RAY ILLUMINATION SYSTEM WITH MULTIPLE TARGET MICROSTRUCTURES

An x-ray illumination beam system includes an electron emitter and a target having one or more target microstructures. The one or more microstructures may be the same or different material, and may be embedded or placed atop a substrate formed of a heat-conducting material. The x-ray source may emit x-rays towards an optic system, which can include one or more optics that are matched to one or more target microstructures. The matching can be achieved by selecting optics with the geometric shape, size, and surface coating that collects as many x-rays as possible from the source and at an angle that satisfies the critical reflection angle of the x-ray energies of interest from the target. The x-ray illumination beam system allows for an x-ray source that generates x-rays having different spectra and can be used in a variety of applications. 1. An x-ray illumination beam system providing multiple characteristic x-ray energies from a plurality of x-ray generating materials selected for its x-ray generating properties , comprising:a vacuum chamber including an electron emitter;a first window transparent to x-rays and attached to a wall of the vacuum chamber;an electron optical system that focusses an electron beam from the electron emitter;a target comprising a plurality of microstructures coupled to a substrate,wherein each microstructure includes a material selected for its x-ray generating properties, and in which a lateral dimension of said material is less than 250 microns;a means to position the x-ray target relative to the electron beam; anda plurality of total external reflection mirror optics, wherein each of the plurality of optics is matched to the x-ray spectra produced by at least one of the plurality of microstructures and positioned to collect x-rays generated by the at least one of the plurality of microstructures when bombarded by the focused electron beam.2. The x-ray illumination beam system of claim 1 , wherein one or more of the plurality of total ...

X-ray Tube Integral Heatsink

Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions.

X-RAY GENERATOR

An object of the invention is to provide an X-ray generator having a simple configuration where heat generated in the irradiation window can be prevented from conducting to a desired portion in accordance with the purpose of use, the method of use or the structure of the X-ray tube. In an X-ray generator for releasing X-rays generated by irradiating a target placed in a vacuumed atmosphere within an X-ray tube with an electron beam from an electron source through an irradiation window of the X-ray tube, the irradiation window has thermal anisotropy where the thermal conductivity is different between the direction in which the irradiation window spreads and the direction of the thickness of the irradiation window, and therefore, the thermal conductivity in the direction in which the heat from the irradiation window is desired not to conduct is made relatively smaller. 1. An X-ray generator for releasing X-rays generated by irradiating a target placed in a vacuumed atmosphere within an X-ray tube with an electron beam from an electron source to the outside of the X-ray tube through an irradiation window that air tightly seals an opening provided in said X-ray tube , characterized in thatsaid irradiation window has thermal anisotropy where the thermal conductivity is different between the direction in which the irradiation window spreads and the direction of the thickness of the irradiation window.2. The X-ray generator according to claim 1 , characterized in that the thermal conductivity of said irradiation window in the direction in which the irradiation window spreads is smaller than the thermal conductivity in the direction of the thickness of the irradiation window.3. The X-ray generator according to claim 1 , characterized in that the thermal conductivity of said irradiation window in the direction in which the irradiation window spreads is greater than the thermal conductivity in the direction of the thickness of the irradiation window.4. The X-ray generator ...

X-RAY TUBE

An X-ray tube according to an embodiment of the inventive concept includes a cathode structure; an anode structure spaced vertically from the cathode structure, a gate electrode structure disposed between the cathode structure and the anode structure, an emitter array disposed between the cathode structure and the gate electrode structure, a tube sheath configured to connect the cathode structure and the anode structure, and a fixing unit connected with the gate electrode structure. The cathode structure includes a first rotation shaft and a cathode connected with the first rotation shaft as one body. The gate electrode structure includes a second rotation shaft and a gate electrode connected with the second rotation shaft through a bearing, and the second rotation shaft is connected with the first rotation shaft by a coupling unit. The gate electrode includes a gate electrode substrate and a protruding part that protrudes from the gate electrode substrate toward an emitter. The protruding part of the gate electrode includes a gate hole that vertically overlaps the emitter. The fixing unit includes a ferromagnetic structure attached to one surface of the gate electrode substrate and disposed on an outer portion of the substrate and a permanent magnet disposed adjacent to the ferromagnetic structure with the tube sheath therebetween. 1. An X-ray tube comprising:a cathode structure;an anode structure spaced vertically from the cathode structure;a gate electrode structure disposed between the cathode structure and the anode structure;an emitter array disposed between the cathode structure and the gate electrode structure;a tube sheath configured to connect the cathode structure and the anode structure; anda fixing unit connected with the gate electrode structure,wherein the cathode structure comprises a first rotation shaft and a cathode connected with the first rotation shaft as one body,the gate electrode structure comprises a second rotation shaft and a gate ...

SYSTEM AND METHOD FOR DEPTH-SELECTABLE X-RAY ANALYSIS

A system for x-ray analysis includes at least one x-ray source configured to emit x-rays. The at least one x-ray source includes at least one silicon carbide sub-source on or embedded in at least one thermally conductive substrate and configured to generate the x-rays in response to electron bombardment of the at least one silicon carbide sub-source. At least some of the x-rays emitted from the at least one x-ray source includes Si x-ray emission line x-rays. The system further includes at least one x-ray optical train configured to receive the Si x-ray emission line x-rays and to irradiate a sample with at least some of the Si x-ray emission line x-rays. 1. A system for x-ray analysis , the system comprising:at least one x-ray source configured to emit x-rays, the at least one x-ray source comprising at least one silicon carbide sub-source on or embedded in at least one thermally conductive substrate and configured to generate the x-rays in response to electron bombardment of the at least one silicon carbide sub-source, at least some of the x-rays emitted from the at least one x-ray source comprising Si x-ray emission line x-rays; andat least one x-ray optical train configured to receive the Si x-ray emission line x-rays and to irradiate a sample with at least some of the Si x-ray emission line x-rays.2. The system of claim 1 , wherein the Si x-ray emission line x-rays comprise Si Kαx-ray emission line x-rays.3. The system of claim 1 , wherein the at least one x-ray source further comprises at least one second sub-source on or embedded in the at least one thermally conductive substrate claim 1 , the at least one second sub-source configured to generate x-rays in response to electron bombardment of the at least one second sub-source claim 1 , the at least one second sub-source comprising at least one material different from silicon carbide claim 1 , at least some of the x-rays emitted from the at least one x-ray source comprising x-ray emission line x-rays of the at ...

Cooling Spiral Groove Bearing Assembly

A liquid metal or spiral groove bearing structure for an x-ray tube and associated process for manufacturing the bearing structure is provided that includes a bearing shaft rotatably disposed in a bearing housing or shell. The shell includes a thrust seal engaged with a sleeve to maintain co-axiality for the rotating liquid metal seal formed in the shell about the shaft. The shaft has a bore for the introduction of a cooling fluid into the bearing assembly in which is disposed a cooling tube. The cooling tube includes turbulence-inducing features to increase the turbulence of the cooling fluid flowing through the cooling tube, consequently enhancing the heat exchange between the cooling fluid and the shaft. This maximizes the heat transfer from the shaft to the oil, allowing materials with lower thermal conductivities, such as non-refractory materials, to be used to form the bearing shaft and shell. 1. A bearing assembly comprising:a shell;a shaft defining a bore therein and rotatably disposed within the shell; anda cooling tube disposed within the bore of the shaft, the cooling tube including at least one turbulence-inducing feature.2. The bearing assembly of claim 1 , wherein the at least one turbulence-inducing feature is disposed on an interior of the cooling tube.3. The bearing assembly of claim 2 , wherein the cooling tube includes a channel extending into the bore of the shaft and wherein the at least one turbulence-inducing feature is an internal taper in the channel.4. The bearing assembly of claim 1 , wherein the at least one turbulence-inducing feature is disposed on an exterior of the cooling tube.5. The bearing assembly of claim 4 , wherein the at least one turbulence-inducing feature is a protrusion disposed on an exterior surface of the cooling tube.6. The bearing assembly of claim 5 , wherein the protrusion has a varying height on the exterior surface of the cooling tube.7. The bearing assembly of claim 5 , wherein the protrusion disposed on the ...

Open-type x-ray tube comprising field emission type electron gun and x-ray inspection apparatus using the same

An object of the present invention is to provide the X-ray tube which improves the workability of the baking for obtaining the ultra-high vacuum of the X-ray tube having a field emission type electron gun and have a stable performance. The X-ray tube comprises a field emission type electron gun chamber, an electron beam aperture, an X-ray target and a vacuum pump, in one body with a vacuum sealing structure (vacuum tube section). The vacuum tube section is attachable and detachable to the electromagnetic lens section in the X-ray tube, thereby it is possible to perform the baking by removing only the vacuum tube section. The fitting portions for positioning are provided at the vacuum tube section and the electromagnetic lens section, and therefore it is a constitution to easily perform an optical axis alignment at a mounting time after the baking.

X-RAY SOURCE AND METHOD FOR MANUFACTURING AN X-RAY SOURCE

An X-ray source () for generating X-rays () is provided. The X-ray source () comprises an emitter arrangement () for generating electrons or for generating X-rays, at least one feedthrough () for supplying electrical power to the emitter arrangement (), and an insulator () configured for isolating an electrical potential of the at least one feedthrough () from a ground potential. Therein, the at least one feedthrough () extends at least partly through the insulator (), and at least a part of the insulator () is in thermal contact with at least a part of the emitter arrangement (). Further, the insulator () comprises at least one cooling channel () formed completely in an interior volume () of the insulator () and configured to dissipate heat from the emitter arrangement (), wherein a distance () between an outer surface () of the insulator () and the cooling channel () is at least as large as half of a thickness () of the cooling channel (). 1. An X-ray source comprising:an emitter arrangement for generating X-rays;at least one feedthrough for supplying electrical power to the emitter arrangement; andan insulator configured to isolate an electrical potential of the at least one feedthrough from a ground potential;wherein the at least one feedthrough extends at least partly through the insulator;wherein at least a part of the insulator is in thermal contact with at least a part of the emitter arrangement;wherein the insulator comprises at least one cooling channel formed completely in an interior volume of the insulator and configured to dissipate heat from the emitter arrangement;wherein a distance between an outer surface of the insulator and the cooling channel is at least as large as half of a thickness of the cooling channel;wherein the cooling channel at least partly surrounds the feedthrough along a circumferential direction of the insulator; andwherein the distance between the outer surface of the insulator and the cooling channel is constant along the ...

MAGNETIC ASSIST ASSEMBLY HAVING HEAT DISSIPATION

In one example, a lift assembly may exert a force on a rotatable anode of an X-ray tube. The lift assembly may include a lift shaft and a lift electromagnet. The lift shaft may be coupled to the anode and may be configured to rotate around an axis of rotation of the anode. The lift electromagnet may be configured to apply a magnetic force to the lift shaft in a radial direction. The lift electromagnet may include a first pole and a second pole oriented towards the lift shaft. Windings may be positioned around the first pole. The lift assembly may include a heat dissipating structure. 1. A lift assembly configured to exert a force on a rotatable anode of an X-ray tube , the lift assembly comprising:a lift shaft coupled to the anode and configured to rotate around an axis of rotation of the anode;a lift electromagnet configured to apply a magnetic force to the lift shaft in a substantially radial direction, the lift electromagnet comprising at least a first pole and a second pole oriented towards the lift shaft;windings positioned around at least the first pole; anda heat dissipating structure.2. The lift assembly of claim 1 , wherein the heat dissipating structure comprises a duct claim 1 , shroud claim 1 , or jet configured to direct coolant around the lift electromagnet.3. The lift assembly of claim 1 , wherein the heat dissipating structure comprises a shroud that at least partially surrounds the lift electromagnet to force coolant around the lift electromagnet.4. The lift assembly of claim 1 , wherein the heat dissipating structure comprises one or more fins coupled to the windings claim 1 , extending out of the windings claim 1 , or embedded in the windings.5. The lift assembly of claim 4 , wherein the fins are oriented perpendicular to the lift shaft.6. The lift assembly of claim 4 , wherein the fins are oriented parallel to the lift shaft.7. The lift assembly of claim 1 , wherein a largest dimension of the heat dissipating structure is substantially parallel ...

X-ray Tube Integral Heatsink

Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions. 1. An x-ray source comprising:an x-ray tube including a cathode, an anode, and an enclosure; the enclosure being electrically-insulative; the cathode and the anode being electrically insulated from each other and attached to the enclosure; the cathode located at one end of a longitudinal axis extending through a hollow core of the enclosure and the anode located at an opposite end of the longitudinal axis; the cathode having an electron-emitter capable of emitting electrons towards the anode; and the anode capable of emitting x-rays in response to impinging electrons from the electron-emitter;{'sup': '8', 'a heatsink encircling the longitudinal axis and the x-ray tube about the longitudinal axis; being electrically conductive and electrically-coupled to the anode and electrically-insulated from the cathode; including a plurality of protrusions extending radially outward from the x-ray tube, the protrusions configured to increase heat transfer away from the x-ray tube; and having at least a portion of an outer surface with an electrical volume resistivity of at least 10ohm*cm; and'}{'sup': '16', 'an electrically-insulative material encircling and adjoining an outer-surface of the enclosure and adjoining an inner-surface of the heatsink, including a region with a thermal conductivity of at least 0.8 W/(m*K), including a region with an electrical volume resistivity of at least 1×10ohm*cm, filling an annular portion of an annular gap between the heatsink and the enclosure, and at least partially separating the heatsink ...

Welded Spiral Groove Bearing Assembly

A structure and associated method for forming a liquid metal or spiral groove bearing assembly for an x-ray tube is illustrated that utilizes a unitary sleeve and a thrust ring or seal each formed of a weldable, non-refractory material. The sleeve and the thrust seal are welded to one another to provide an improved construction for minimizing leaks of the liquid metal bearing fluid. The structure of the sleeve and the thrust seal are formed with deformation restricting features that maintain the integrity of the bearing surfaces of the assembly when the thrust seal is secured within the sleeve and welded thereto to form the bearing assembly. 1. A bearing assembly comprising:a) a sleeve comprising a first welding feature thereon;b) a shaft rotatably disposed within the sleeve;c) a thrust seal seated at least partially within the sleeve, the thrust seal comprising a central aperture through which the shaft extends and a second welding feature thereon; andd) a weld joining the first weld feature and the second weld feature to one another.2. The bearing assembly of wherein at least one of the sleeve or the thrust seal includes at least one weld deformation restriction feature.3. The bearing assembly of wherein the at least one weld deformation restriction feature is selected from the first welding feature claim 2 , the second welding feature claim 2 , or a combination thereof.4. The bearing assembly of wherein the sleeve and the thrust seal are each formed of a non-refractory metal.5. The bearing assembly of wherein the non-refractory metal is selected from a stainless steel or a carbon tool steel.6. The bearing assembly of wherein the sleeve includes a cap portion forming a closed end of the sleeve and a seating portion forming an open end of the sleeve.7. The bearing assembly of wherein the cap portion and the seating portion are integrally formed with one another as a unitary structure.8. The bearing assembly of wherein the seating portion defines a first shoulder ...

HIGH POWER X-RAY TUBE HOUSING

An x-ray housing can include: a finned housing member having a tubular body with an external fin array on a finned external surface and an internal fin array on a finned internal surface, the finned internal surface defining a finned housing lumen, the internal fin array and external fin array cooperatively forming a heat exchanger; and an apertured housing member having a tubular body with an x-ray window aperture extending therethrough from an external surface to an internal surface, the internal surface defining an apertured housing lumen, the finned housing member having an annular end integrally coupled with an annular end of the apertured housing member to form a tubular x-ray housing having an x-ray housing lumen. 1. An x-ray housing comprising:a finned housing member having a tubular body with an external fin array on a finned external surface and an internal fin array on a finned internal surface, the finned internal surface defining a finned housing lumen, the internal fin array and external fin array cooperatively forming a heat exchanger; andan apertured housing member having a tubular body with an x-ray window aperture extending therethrough from an external surface to an internal surface, the internal surface defining an apertured housing lumen, the finned housing member having an annular end integrally coupled with an annular end of the apertured housing member to form a tubular x-ray housing having an x-ray housing lumen formed from the finned housing lumen and apertured housing lumen.2. The x-ray housing of claim 1 , wherein:the external fin array covers the finned external surface between a first end and an un-finned annular region at a second end with a plurality of external fins separated by a plurality of external fin recesses; andthe internal fin array covers the finned internal surface between the first end and an un-finned stator recess and an un-finned annular region at a second end with a plurality of internal fins separated by a plurality ...

X-ray machine

An x-ray apparatus includes a vacuum chamber that includes a window for exit of x-rays. Electrons are generated at a cathode within the vacuum chamber and accelerated toward a target anode associated with the window. An x-ray generating layer is included as a surface of the target anode to receive the electrons emitted by the cathode and to create x-rays. A blocking path blocks over 70% of the free electrons reaching said target anode from continuing on to exit through the window, while allowing x-rays leaving the x-ray generating layer to continue along the selectively blocking path to exit through the window. The x-ray apparatus is capable of operating at low voltage and relatively high power to reduce the necessary shielding and the corresponding weight of the apparatus yet allow more ready absorption of x-rays by items being irradiated.

X-RAY ILLUMINATION SYSTEM WITH MULTIPLE TARGET MICROSTRUCTURES

An x-ray illumination beam system includes an electron emitter and a target having one or more target microstructures. The one or more microstructures may be the same or different material, and may be embedded or placed atop a substrate formed of a heat-conducting material. The x-ray source may emit x-rays towards an optic system, which can include one or more optics that are matched to one or more target microstructures. The matching can be achieved by selecting optics with the geometric shape, size, and surface coating that collects as many x-rays as possible from the source and at an angle that satisfies the critical reflection angle of the x-ray energies of interest from the target. The x-ray illumination beam system allows for an x-ray source that generates x-rays having different spectra and can be used in a variety of applications. 1. An x-ray illumination beam system providing multiple characteristic x-ray energies from a plurality of x-ray generating materials selected for its x-ray generating properties , comprising:a vacuum chamber including an electron emitter;a first window transparent to x-rays and attached to a wall of the vacuum chamber;an electron optical system that focusses an electron beam from the electron emitter;a target comprising a plurality of microstructures coupled to a substrate,wherein each microstructure includes a material selected for its x-ray generating properties, and in which a lateral dimension of said material is less than 250 microns;a means to position the x-ray target relative to the electron beam; anda plurality of total external reflection mirror optics, wherein each of the plurality of optics is matched to the x-ray spectra produced by at least one of the plurality of microstructures and positioned to collect x-rays generated by the at least one of the plurality of microstructures when bombarded by the focused electron beam.2. The x-ray illumination beam system of claim 1 , wherein one or more of the plurality of total ...

TARGET ASSEMBLY, APPARATUS INCORPORATING SAME, AND METHOD FOR MANUFACTURING SAME

A target assembly for generating radiation may comprise a target, a substrate and a window. The target may be capable of generating first radiation when impinged by a beam. The window may be at least partially permeable to the beam. The window and the substrate may form at least part of a hermetically sealed chamber and the target may be positioned in the chamber. The chamber may be filled with air having a normal or reduced content of oxygen. 1. A target assembly , comprising:a target capable of generating first radiation when impinged by a beam;a substrate for supporting the target;a window at least partially permeable to the beam, the window and the substrate forming at least part of a hermetically sealed chamber in which the target is positioned, wherein the chamber is filled with air having a normal or reduced content of oxygen.2. The target assembly of claim 1 , wherein the target assembly further comprising a second target capable of generating second radiation when impinged by the beam claim 1 , wherein the second radiation and the first radiation are different in frequency or intensity.3. The target assembly of claim 1 , wherein:the substrate includes a cavity; andthe cavity provides a space for holding at least a portion of the target.4. The target assembly of claim 1 , wherein the window provides a space for holding at least a portion of the target.5. A radiation generator claim 1 , comprising:an envelope of substantial vacuum;a beam generator for generating a beam, the beam generator being positioned inside the envelope; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a target assembly of .'}6. The radiation generator of claim 5 , further comprising a carrier for supporting the target assembly.7. The radiation generator of claim 6 , wherein a surface of the target assembly and a surface of the carrier together form a tube for holding a cooling medium to cool the target assembly.8. The radiation generator of claim 6 , the radiation generator further ...

X-ray source having cooling and shielding functions

Disclosed herein is an X-ray source having cooling and shielding functions. The X-ray source includes an X-ray generation unit ( 100 ) which has one or more insulation columns ( 160 ) and emits X-rays in a vacuum; a cooling unit ( 180 ) which is provided around a periphery of the X-ray generation unit and removes heat generated from the X-ray generation unit; and a shielding unit ( 190 ) which is provided around a periphery of the cooling unit and shields an area exposed to X-rays other than the areas related to the emission of the X-rays.

ROTATING ANODE AND METHOD FOR PRODUCING A ROTATING ANODE

The present invention relates to a rotating anode () comprising: an outer ring compound () comprising a first carbon material with a first material property and carbon fibres substantially aligned to a contour of the outer ring compound (), wherein the outer ring compound () is configured to mechanically stabilize the rotating anode (); an intermediate ring compound () comprising a second carbon material with a second material property differing from the first material property; a inner disc compound () comprising a layered fibre structure and a third carbon material with a third material property differing from the first and the second material property, wherein the inner disc compound () and the intermediate ring compound () are configured to provide a thermally conductive interface between the intermediate ring compound () and the inner disc compound (); and an interface compound () comprising a metallic or a semi-metallic material, wherein the interface compound is coupled to the intermediate ring compound () and the inner disc compound (). 1. A rotating anode comprising:an outer ring compound comprising a first carbon material with a first material property and carbon fibres substantially aligned to a contour of the outer ring compound, wherein the outer ring compound is configured to mechanically stabilize the rotating anode;an intermediate ring compound comprising a second carbon material with a second material property differing from the first material property;an inner disc compound comprising a layered fibre structure and a third carbon material with a third material property differing from the first and the second material property, wherein the inner disc compound and the intermediate ring compound are configured to provide a thermally conductive interface between the intermediate ring compound and the inner disc compound; andan interface compound comprising a metallic or a semi-metallic material, wherein the interface compound is coupled to the ...

Thrust Flange For X-Ray Tube With Internal Cooling Channels

A bearing structure for an X-ray tube is provided that includes a journal bearing shaft with a radially protruding thrust bearing flange encased within a bearing housing or sleeve. The sleeve includes a thrust seal that is engaged with the sleeve in a manner to maintain coaxiality for the rotating liquid metal seal formed in the sleeve about the shaft. The shaft includes a central bore containing a cooling tube that directs coolant within the bore to maximize the heat transfer from the shaft to the coolant, allowing materials with lower thermal conductivities, such as steel, to be used to form the bearing shaft. The thrust flange on the shaft is formed with channel(s) therein that enable the coolant and/or the liquid metal to effect greater heat transfer on the components of the sleeve through the thrust flange, thereby reducing thermal deformation of the bearing components. 1. A bearing assembly for an X-ray tube , the bearing assembly comprising:a sleeve;a shaft rotatably disposed within the sleeve and including a bore extending through the shaft, the shaft forming a gap between the sleeve and the shaft; anda thrust flange disposed on the shaft and including a channel formed within the thrust flange.2. The bearing assembly of claim 1 , wherein the thrust flange includes at least one channel extending through the thrust flange and having an inlet in communication with the bore and an outlet in communication with the bore.3. The bearing assembly of claim 2 , further comprising at least one external baffle positioned between the inlet and the outlet.4. The bearing assembly of claim 3 , further comprising a cooling tube disposed within the bore claim 3 , and wherein the at least one external baffle extends between the thrust flange and the cooling tube.5. The bearing assembly of claim 4 , wherein the at least one external baffle is formed on the cooling tube.6. The bearing assembly of claim 2 , wherein the at least one channel includes at least one internal baffle ...

SYSTEMS AND METHODS FOR CONTROLLING THERMAL CONDUCTION IN X-RAY TUBE CATHODES

Systems and methods are provided for improving thermal management strategies of a cathode assembly of an X-ray tube. In one embodiment, an X-ray tube comprises an anode assembly and a cathode assembly, wherein the cathode assembly includes one or more elements that include an internal porous section for controlling a flow of heat within the cathode assembly during operation of the X-ray tube. In this way, heat conduction to temperature sensitive aspects of the cathode assembly may be reduced, while enabling sufficient heat transfer to other parts of the cathode assembly to minimize deformation. 1. A method for producing a component of a cathode assembly of an X-ray tube , comprising:obtaining a three-dimensional (3D) model of the component including an internal porous section or sections of the component;obtaining a plurality of slices including a first slice of the three-dimensional (3D) model of the component;printing the first slice of the three-dimensional (3D) model onto a base build plate;sequentially printing the plurality of slices on top of the first slice; anddrying and/or curing the component of the cathode assembly.2. The method of claim 1 , wherein obtaining the three-dimensional (3D) model further comprises including an evacuation pathway as part of the internal porous section or sections to enable evacuation of an entirety of the internal porous section or sections associated with the component during operational use of the X-ray tube.3. The method of claim 1 , wherein sequentially printing the plurality of slices further comprises using one or more different materials for producing the component.4. The method of claim 1 , wherein obtaining the three-dimensional (3D) model of the component further comprises selecting an area or areas of the component to include the internal porous section or sections based on a desired flow of heat within the component during operational use of the X-ray tube. The present application is a divisional application of and ...

RADIATION EMISSION DEVICE

A radiation emission device is provided. The radiation emission device may include a cathode configured to emit an electron beam and an anode configured to rotate on a shaft. The anode may be situated to receive the electron beam from the cathode. The radiation emission device may further include a rotor configured to drive the anode to rotate. The rotor may be mechanically connected to the shaft. The radiation emission device may further include a sleeve configured to support the shaft via at least one bearing. The cathode, the anode, and the rotor may be enclosed in an enclosure that is connected to the sleeve. At least a portion of the sleeve may reside outside the enclosure. 1. A radiation emission device , comprising:a cathode configured to emit an electron beam;an anode configured to rotate on a shaft, the anode being situated to receive the electron beam;a rotor configured to drive the anode to rotate, the rotor being mechanically connected to the shaft;a sleeve configured to support the shaft via at least one bearing; andan enclosure configured to enclose the cathode, the anode, and the rotor, wherein the enclosure is connected to the sleeve, and at least a portion of the sleeve is immersed in a cooling medium.2. The radiation emission device of claim 1 , wherein the at least a portion of the sleeve resides outside of the enclosure.3. The radiation emission device of claim 1 , wherein the at least one bearing transfers heat to the cooling medium through the sleeve.4. The radiation emission device of claim 1 , wherein the cooling medium is in a liquid state or a gaseous state.5. The radiation emission device of claim 1 , wherein the enclosure is immersed in the cooling medium.6. The radiation emission device of claim 1 , further comprising:a stator; andcoils mounted on the stator, wherein the coils generate a magnetic field to drive the rotor to rotate, and the magnetic field forms an oblique angle with the axial direction of the shaft.7. The radiation ...

X-RAY INSPECTION SYSTEM

An X-ray inspection system of the present application is capable of blocking the effect of heat from an X-ray source, thereby making it possible to place a heat-sensitive circuit component in the same housing space as the X-ray source. The X-ray inspection system includes a housing provided with an upper housing space in which an X-ray source housed in a cooling container is placed. Due to pressure of a pump a cooling medium circulates between the cooling container and a heat radiating device thereby suppressing the temperature rise of the cooling container Since the cooling container is placed in the upper housing space the upper housing space serves as a cooling space, suppressing the temperature rise. Therefore, heat-sensitive or heat-producing circuit components can be placed in the upper housing space 1. An X-ray inspection system comprising:a work passage;an X-ray source provided at one side of the work passage;an X-ray detection sensor provided at the other side thereof;a cooling container housing the X-ray source;a heat radiating device;a conduit connecting the inside of the cooling container and the heat radiating device;a pump for circulating a cooling medium between the inside of the cooling container and the heat radiating device through the conduit, the cooling container being placed in an upper housing space inside a housing, the heat radiating device being placed outside the upper housing space; anda circuit component of an electric circuit being placed in the upper housing space along with the cooling container,wherein the cooling medium supplied to the cooling container suppresses temperature rise of the cooling container housing the X-ray source, and the cooling container serves as a cooling device capable of suppressing temperature rise in the upper housing space and also suppressing temperature rise of the circuit component.2. The X-ray inspection system according to claim 1 , wherein the upper housing space is formed inside an upper openable ...

HIGH DOSE OUTPUT, THROUGH TRANSMISSION TARGET X-RAY SYSTEM AND METHODS OF USE

A high dose output, through transmission target X-ray tube and methods of use includes, in general an X-ray tube for accelerating electrons under a high voltage potential having an evacuated high voltage housing, a hemispherical shaped through transmission target anode disposed in said housing, a cathode structure to deflect the electrons toward the hemispherical anode disposed in said housing, a filament located in the geometric center of the anode hemisphere disposed in said housing, a power supply connected to said cathode to provide accelerating voltage to the electrons. 1. An X-ray tube for accelerating electrons under a high voltage potential , said X-ray tube comprising:an evacuated housing that is sealed;a through transmission target anode structure disposed on said housing, said anode structure configured in a hemispherical shape having a geometric center;a cathode structure disposed in said housing, said cathode configured to deflect the electrons toward said anode structure;a filament disposed in said housing, said filament positioned proximate said geometric center of said hemispherical shape and between said anode and said cathode,wherein said evacuated housing is configured to vacuum seal therein said anode structure, said cathode structure, and said filament.2. The X-ray tube of claim 1 , wherein said anode structure is coated with at least one target element to produce a bremsstrahlung X-ray from a plurality of accelerated electrons originating from said filament.3. The X-ray tube of claim 1 , wherein said anode structure is formed of a material that is substantially X-ray transparent.4. The X-ray tube of claim 2 , wherein said at least one target element is formed thereon said anode structure via electro-chemically platted claim 2 , mechanically bonded claim 2 , or vapor deposited using evaporation or sputtering technique.5. The X-ray tube of claim 3 , wherein said material consists of Beryllium claim 3 , Carbon claim 3 , Aluminum claim 3 , Ceramic ...

Systems and methods for cooling x-ray tubes and detectors

According to various aspects, exemplary embodiments are disclosed of systems that may be used for cooling objects, such as X-ray tubes and detectors, etc. Also disclosed are exemplary embodiments of methods for cooling objects, such as X-ray tubes and detectors, etc. For example, an exemplary embodiment includes a system that can be used to cool an X-ray tube and detector with one chiller. As another example, an exemplary embodiment of a method includes using one chiller to cool an X-ray tube and detector.

System for generating x-ray beams from a liquid target

A system for generating X-ray beams from a liquid target includes a vacuum chamber, a diamond window assembly, an electron source, a target material flow system, and an X-ray detector/imager. An electron beam from the electron source travels through the diamond window assembly and into a dynamic target material of the flow system. Preferably, the dynamic target material is lead bismuth eutectic in a liquid state. Upon colliding with the dynamic target material, X-rays are generated. The generated X-rays exit through an X-ray exit window to be captured by the X-ray detector/imager. Since the dynamic target material is constantly in fluid motion within a pipeline of the flow system, the electron beam always has a new target area which is at a controlled operational temperature and thus, prevents overheating issues. By providing a small focus area for the electron beams, the overall imaging resolution of the X-rays is also improved.

HIGH TEMPERATURE ANNEALING IN X-RAY SOURCE FABRICATION

The present disclosure relates to multi-layer X-ray sources having decreased hydrogen within the layer stack and/or tungsten carbide inter-layers between the primary layers of X-ray generating and thermally-conductive materials. The resulting multi-layer target structures allow increased X-ray production, which may facilitate faster scan times for inspection or examination procedures. 1. An X-ray source , comprising:an emitter configured to emit an electron beam; and [{'sup': 16', '2, 'at least one X-ray generating layer comprising X-ray generating material, wherein planar density hydrogen held within some or all of the X-ray generating layers is less than 5×10/cm; and'}, {'sup': 16', '2, 'at least one thermally-conductive layer in thermal communication with each X-ray generating layer, wherein each thermally conductive layer or substrate comprises grain boundaries in which hydrogen is held, and wherein the planar density hydrogen held within some or all of the thermally conductive layers is less than 5×10/cm.'}], 'a target configured to generate X-rays when impacted by the electron beam, the target comprising2. The X-ray source of claim 1 , wherein the X-ray generating material comprises one or more of tungsten claim 1 , molybdenum claim 1 , titanium-zirconium-molybdenum alloy (TZM) claim 1 , tungsten-rhenium alloy claim 1 , copper-tungsten alloy claim 1 , chromium claim 1 , iron claim 1 , cobalt claim 1 , copper claim 1 , silver.3. The X-ray source of claim 1 , wherein the thermally-conductive layers comprise one or more of highly ordered pyrolytic graphite (HOPG) claim 1 , diamond claim 1 , beryllium oxide claim 1 , silicon carbide claim 1 , copper-molybdenum claim 1 , copper claim 1 , tungsten-copper alloy claim 1 , or silver-diamond.4. The X-ray source of claim 1 , further comprising one or more carbide layers disposed between each X-ray generating layer and thermally-conductive layer.5. The X-ray source of claim 1 , wherein the at least one X-ray generating ...

SYSTEM AND METHOD FOR IMPROVING X-RAY PRODUCTION IN AN X-RAY DEVICE

An x-ray device is presented. The x-ray device includes a cathode configured to emit an electron beam. Also, the x-ray device includes an anode configured to rotate about a longitudinal axis of the x-ray device and positioned to receive the emitted electron beam, where the anode includes a target element disposed on an anode surface of the anode and a track element embedded in the target element, where the track element is configured to generate x-rays in response to the emitted electron beam impinging on a focal spot on the track element, where at least a portion of the track element is configured to transition from a first phase to a second phase based on heat generated in at least a portion of the track element, and where at least the portion of the track element is configured to distribute the generated heat across the anode. 1. An x-ray device , comprising:a cathode configured to emit an electron beam; a target element disposed on an anode surface of the anode; and', 'a track element embedded in the target element, wherein the track element is configured to generate x-rays in response to the emitted electron beam impinging on a focal spot on the track element, wherein at least a portion of the track element is configured to transition from a first phase to a second phase based on heat generated in at least a portion of the track element, and wherein at least the portion of the track element is configured to distribute the generated heat across the anode., 'an anode configured to rotate about a longitudinal axis of the x-ray device and positioned to receive the emitted electron beam, wherein the anode comprises2. The x-ray device of claim 1 , further comprising a bearing unit operatively coupled to the anode and configured to rotate the anode about the longitudinal axis of the x-ray device.3. The x-ray device of claim 1 , wherein at least the portion of the track element is configured to distribute the generated heat across the anode when the anode is rotated ...

X-ray Tube Anode Arrangement

A method of manufacturing an X-ray tube component, includes diffusion bonding or brazing an anode of rhodium, molybdenum or tungsten to a heat spreader of molybdenum, tungsten, or a composite of molybdenum and/or tungsten. Suitable joint materials for diffusion bonding include gold; suitable joint materials for brazing include an alloy of silver and copper, an alloy of silver, copper and palladium, an alloy of gold and copper or an alloy of gold, copper and nickel. The resulting tube component delivers reliable behaviours and the joint can withstand high temperatures, high temperature gradients, fast temperature changes, extremely high radiation and extremely high electric field, while maintaining good high vacuum properties. 1. A method of manufacturing an X-ray tube component , comprising:providing an anode of rhodium, molybdenum or tungsten;providing a heat spreader of a composite of molybdenum and/or tungsten having a matching thermal expansion coefficient to the anode;mounting the anode on the heat spreader with a layer of joint material therebetween, the joint material being gold, silver or an alloy of gold or silver;bonding the anode to the heat spreader with the joint material;wherein the step of bonding the anode to the heat spreader involves diffusion bonding the anode to the heat spreader.2. The method according to claim 1 , wherein the joint material is gold.3. The method according to claim 1 , wherein the joint material is a thin layer of thickness 5 to 200 μm.4. The method according to claim 1 , wherein the step of bonding the anode to the heat spreader involves brazing the anode to the heat spreader.5. The method according to claim 4 , wherein the joint material is an alloy of silver and copper claim 4 , an alloy of silver claim 4 , copper and palladium claim 4 , an alloy of gold and copper or an alloy of gold claim 4 , copper and nickel.6. The method according to claim 4 , wherein the joint material is an alloy of silver claim 4 , copper and ...

X-RAY DEVICE AND METHOD OF APPLYING X-RAY RADIATION

The present disclosure provides an x-ray device including a housing configured to provide a vacuum therein, a cathode arranged inside the housing and configured to emit electrons, an anode arranged inside the housing and configured to produce x-ray radiation when impacted by electrons emitted by the cathode, and a converter configured to convert the x-ray radiation produced by the anode into monochromatic x-ray radiation, wherein the anode is configured to produce x-ray radiation in transmission and is arranged between the cathode and the converter. The present disclosure may be used in medical imaging, therapy, spectroscopy, and the like. Geometries and configurations may be improved compared to previously known x-ray devices when it comes to requirements for space, materials used, complexity of electrical wiring, distance between cathode and anode, and providing supplementary functions. 1. An x-ray device comprising:a housing configured to provide a vacuum therein;a cathode arranged inside the housing and configured to emit electrons;an anode arranged inside the housing and configured to produce x-ray radiation when impacted by electrons emitted by the cathode; anda converter configured to convert the x-ray radiation produced by the anode into monochromatic x-ray radiation,wherein the anode is configured to produce x-ray radiation in transmission and is arranged between the cathode and the converter.2. The x-ray device of claim 1 , further comprising:a transmission body having a material transparent to x-ray radiation.3. The x-ray device of claim 2 , wherein the transmission body is arranged in contact with the anode.4. The x-ray device of claim 3 , wherein the transmission body is arranged structurally separated from the converter.5. The x-ray device of claim 3 , wherein the transmission body is arranged in contact with the converter.6. The x-ray device of claim 2 , wherein the converter is arranged between the anode and the transmission body in contact with the ...

GAIN CALIBRATION AND CORRECTION IN RADIATION SYSTEM

Among other things, one or more techniques and/or systems for calibration of a radiation system to compute a gain correction(s) are provided. A calibration procedure is performed during which a portion of the detector array is shadowed by an object, causing the detector array to be non-uniformly exposed to radiation. A portion of a projection generated from the calibration procedure and indicative of radiation that did not traverse the object is separated from a portion of the projection indicative of radiation that did traverse the object, and a gain correction(s) is computed from the portion of the projection indicative of radiation that did not traverse the object (e.g., and is thus indicative of radiation that merely traversed air). 1. A method of calibrating a computed tomography (CT) system when a field of view is partially obstructed by an object , comprising:acquiring a projection, corresponding to a first view angle of a CT scan, from a calibration procedure performed while the field of view is partially obstructed by the object, the projection comprising object projection data indicative of radiation that traversed the object and calibration projection data indicative of radiation that did not traverse the object; 'comparing the projection to a second projection, corresponding to the first view angle, acquired while the field of view was not partially obstructed by the object to identify the calibration projection data; and', 'separating the calibration projection data from the object projection data, the separating comprisingcomputing one or more gain corrections as a function of the calibration projection data, the one or more gain corrections utilized during an examination procedure to correct measurements yielded from a detector array of the CT system.2. The method of claim 1 , comprising adjusting one or more values within the second projection prior to the comparing.3. The method of claim 2 , the adjusting comprising:adjusting the one or more values ...

X-RAY TUBE UNIT

An x-ray tube unit includes an x-ray tube unit housing, in which a vacuum housing is disposed, which includes a high-voltage component. The vacuum housing includes an insulating medium circulating in the x-ray tube unit housing flowing around it. Further, a cathode module and an anode are disposed in the vacuum housing, the cathode module lying at high voltage and including an emitter which emits electrons when heating current is fed to it. In addition, a potential difference is present between the cathode module and the anode for accelerating the emitted electrons. In accordance with an embodiment of the invention a high-voltage feed, a heating transformer and a radiation protection component are integrated into the high-voltage component, the high-voltage component being filled at least partly with an electrically-insulating encapsulation material. This produces a compact and installation-friendly x-ray tube unit which has high operational safety. 1. An x-ray tube unit comprising: an insulating medium circulating in the x-ray tube unit housing flowing around the insulating medium,', 'a cathode module and an anode disposed in the vacuum housing, the cathode module lying at high voltage and including an emitter to emit electrons when heating current is fed to the cathode module, a potential difference being present for accelerating the emitted electrons between the cathode module and the anode., 'an x-ray tube unit housing, a vacuum housing being disposed in the x-ray tube unit housing, the x-ray tube unit housing including a high-voltage component, a high-voltage feed, a heating transformer and a radiation protection component integrated into the high-voltage component, wherein the high-voltage component is filled at least partly with an electrically-insulating encapsulation material, and wherein the vacuum housing includes'}2. The x-ray tube unit of claim 1 , wherein the high-voltage component comprises a component housing made of an electrically-conducting ...

MULTILAYER X-RAY SOURCE TARGET WITH STRESS RELIEVING LAYER

An X-ray source target includes a structure configured to generate X-rays when impacted by an electron beam. The structure has an X-ray generating layer comprising X-ray generating material, and a thermally-conductive layer is adjacent to and in thermal communication with the X-ray generating layer. A stress relieving layer is adjacent to the thermally-conductive layer. The thermally-conductive layer is sandwiched between the X-ray generating layer and the stress relieving layer. 1. An X-ray source target , comprising:a structure configured to generate X-rays when impacted by an electron beam, the structure comprising:an X-ray generating layer comprising X-ray generating material;a thermally-conductive layer adjacent to and in thermal communication with the X-ray generating layer; anda stress relieving layer adjacent to the thermally-conductive layer; andwherein the thermally-conductive layer is sandwiched between the X-ray generating layer and the stress relieving layer.2. The X-ray source target of claim 1 , wherein the X-ray generating layer comprises one or more of tungsten claim 1 , rhenium claim 1 , rhodium and molybdenum.3. The X-ray source target of claim 1 , wherein the thermally-conductive layer comprises one or more of highly ordered pyrolytic graphite (HOPG) claim 1 , diamond claim 1 , beryllium oxide claim 1 , beryllium claim 1 , and aluminum nitride.4. The X-ray source target of claim 1 , wherein the stress relieving layer comprises one or more of tungsten claim 1 , molybdenum claim 1 , titanium-zirconium-molybdenum alloy (TZM) claim 1 , tungsten-rhenium alloy claim 1 , copper-tungsten alloy claim 1 , chromium claim 1 , iron claim 1 , cobalt claim 1 , copper claim 1 , silver.5. The X-ray source target of claim 1 , wherein the X-ray generating layer comprises tungsten claim 1 , the thermally-conductive layer comprises diamond claim 1 , and the stress relieving layer comprises tungsten.6. The X-ray source target of claim 1 , wherein the X-ray generating ...

SYSTEMS AND METHODS FOR CONTROLLING THERMAL CONDUCTION IN X-RAY TUBE CATHODES

Systems and methods are provided for improving thermal management strategies of a cathode assembly of an x-ray tube. In one embodiment, an x-ray tube comprises an anode assembly and a cathode assembly, wherein the cathode assembly includes one or more elements that include an internal porous section for controlling a flow of heat within the cathode assembly during operation of the x-ray tube. In this way, heat conduction to temperature sensitive aspects of the cathode assembly may be reduced, while enabling sufficient heat transfer to other parts of the cathode assembly to minimize deformation. 1. An x-ray tube , comprising:an anode assembly and a cathode assembly, wherein the cathode assembly includes one or more elements that include an internal porous section for controlling a flow of heat within the cathode assembly during operation of the x-ray tube.2. The x-ray tube of claim 1 , wherein the cathode assembly further comprises a cathode cup assembly that includes at least a cup plate with a cup section claim 1 , a ceramic plate claim 1 , and an emitter weld pad for securing one or more emitters to the cathode assembly.3. The x-ray tube of claim 2 , wherein the internal porous section is included in the cup section that is coupled to the cup plate.4. The x-ray tube of claim 3 , wherein the cup section includes a first cup section and a second cup section claim 3 , the first cup section a mirror image of the second cup section; andwherein the internal porous section is included in the first cup section but not the second cup section, or vice versa.5. The x-ray tube of claim 2 , wherein the emitter weld pad includes a first leg and a second leg that extend from a first support member claim 2 , and a third leg and a fourth leg that extend from a second support member claim 2 , the first support member joined to the second support member via a coupling member; andwherein one or more of the first leg, the second leg, the third leg and the fourth leg include the ...

X-RAY TUBE ASSEMBLY

According to one embodiment, an X-ray tube assembly includes a cathode emitting electrons, an anode target generating X-rays when the electrodes emitted from the cathode collide with the anode target, an anode block, a coolant pipe, and a protective film. The anode block includes a tube portion, and a bottom portion closing one end side of the tube portion and joined to the anode target. The coolant pipe is located on an inner side of the tube portion, includes an outlet from which a coolant is discharged toward the bottom portion, and forms a flow passage of the coolant between the coolant pipe and the anode block. The protective film covers an inner surface of the bottom portion and is formed of hard gold containing nickel. 1. An X-ray tube assembly comprising:a cathode configured to emit electrons;an anode target configured to generate X-rays when the electrons emitted from the cathode collide therewith;an anode block including a tube portion and a bottom portion closing one end side of the tube portion and joined to the anode target;a coolant pipe located on an inner side of the tube portion, including an outlet from which a coolant is discharged toward the bottom portion, and forming a flow passage of the coolant between the coolant pipe and the anode block; anda protective film covering an inner surface of the bottom portion and formed of hard gold containing nickel.2. The X-ray tube assembly of claim 1 , wherein the hard gold contains nickel of greater than 1 wt %.3. The X-ray tube assembly of claim 1 , wherein the hard gold contains nickel of less than or equal to 3 wt %.4. The X-ray tube assembly of claim 1 , wherein the protective film continuously covers the inner surface of the bottom portion and an inner circumferential surface of the tube portion.5. The X-ray tube assembly of claim 4 , wherein a first thickness of the protective film covering the inner surface is greater than a second thickness of the protective film covering the inner circumferential ...

X-Ray Tube with Distributed Filaments

An x-ray generating unit includes an x-ray tube that is substantially transparent to x-rays and that defines a vacuum therein. A cathode is disposed within the x-ray tube and defines a plurality of spaced apart cavities. An anode is spaced apart from the cathode and includes a material that emits x-rays when impacted by electrons. A plurality of filaments is each disposed in a different one of the cavities defined by the cathode and each is electrically coupled to the cathode. Each filament emits a focused electron beam directed to a different predetermined spot on the anode upon application of a predetermined voltage between the cathode and the anode, thereby causing the anode to generate x-rays.

X-ray tube and anode target

According to one embodiment, an X-ray tube including an electron emission source which emits an electron, an anode target which comprises a target layer emitting an X-ray by the electron from the electron emission source, and a substrate supporting the target layer and composed from a carbide-strengthened molybdenum alloy, an evacuated outer surrounding envelope which contains the electron emission source and the anode target, a diffusion barrier layer which is integrally formed with the substrate by a powder metallurgy method on a part of a top surface of the substrate and is composed of a high-melting-point metal lacking of carbon-element content compared with carbon-element content in the substrate, and a thermal radiation film which is formed on at least a part of a top surface of the diffusion barrier layer and composed of metallic oxide.

X-RAY EMITTING UNIT WITH A PLURALITY OF OPENINGS FOR X-RAYS AND FOR COOLING AND ELECTRICALLY INSULATING LIQUID AND RADIOLOGICAL APPARATUSES

The X-ray emitting unit () comprises a box-shaped container () with a chamber inside it, and an X-ray tube located in the chamber; the box-shaped container () is provided with an opening () for X-rays and a plurality of openings for cooling and electrically insulating liquid; having: a first main opening (A) for the inlet of cooling and electrically insulating liquid, a second main opening for the outlet of cooling and electrically insulating liquid; furthermore, the box-shaped container () has: at least one secondary opening (A) of the first type for cooling and electrically insulating liquid and/or at least one secondary opening (A, B) of the second type for cooling and electrically insulating liquid. 1. An X-ray emitting unit comprising:a box-shaped container with a chamber inside and an X-ray tube placed in said chamber, wherein said box-shaped container is provided with an opening for X-rays and a plurality of openings for cooling and electrically insulating liquid, having a first main opening for cooling and electrically insulating liquid,{'b': '112', 'a second main opening (B) for cooling and electrically insulating liquid;'}wherein said box-shaped container hasat least one first type of secondary opening for cooling and electrically insulating liquid, said box-shaped container having at least one plate f shielding material located frontally with respect to the first type of secondary opening, inside said chamber; orat least one second type of secondary opening for cooling and electrically insulating liquid, said box-shaped container having at least one plate of shielding material located frontally with respect to the second type of secondary opening, outside said chamber.2. The X-ray emitting unit according to claim 1 , wherein the walls of said box-shaped container are made of shielding material or internally and entirely covered by first layers of shielding material.3. The X-ray emitting unit according to claim 2 , wherein the walls of said box-shaped ...

X-ray source target

In one embodiment, an X-ray source includes a source target configured to generate X-rays when impacted by an electron beam. The source target includes one or more thermally conductive layers; and one or more X-ray generating layers interleaved with the thermally conductive layers, wherein at least one X-ray generating layer comprises regions of X-ray generating material separated by thermally conductive material within the respective X-ray generating layer.

Supply of a liquid-metal target in x-ray generation

Closed-loop circulation for providing liquid metal to an interaction region at which an electron beam is to impact upon the liquid metal to produce X-rays is presented. In a method, the pressure of the liquid metal is raised to at least 10 bar using a high-pressure pump. The pressurized liquid metal is then conducted to a nozzle and ejected into a vacuum chamber in the form of a spatially continuous jet. After passage through the vacuum chamber, the liquid metal is collected in a collection reservoir, and the pressure of the liquid metal is raised to an inlet pressure, e.g. using a primer pump, suitable for the inlet of the high-pressure pump. Also, a corresponding circulation system and an X-ray source provided with such circulation system.

CT System

The embodiments relate to a CT system with a stationary part and a rotatable part, which is supported rotatably in the stationary part. At least one x-ray tube unit cooled by a cooling fluid, an x-ray detector lying opposite the x-ray tube unit, and a cooling device coupled in terms of fluid technology to the x-ray tube unit via a coolant circuit are disposed in the rotatable part. A cooling air channel, through which cooling air is able to be fed into the rotatable part, and an exhaust air channel, through which heated exhaust air is able to be taken away from the rotatable part, are disposed in the stationary part. In accordance with the embodiments, at least one overpressure relief valve is disposed in the coolant circuit, through which the cooling fluid is able to be conveyed away in the exhaust air channel. 1. A CT system comprising:a stationary part; anda rotatable part supported rotatably in the stationary part,wherein at least one x-ray tube unit cooled by a cooling fluid, an x-ray detector lying opposite the x-ray tube unit, and a cooling device coupled to the x-ray tube unit via a coolant circuit are disposed in the rotatable part,wherein a cooling air channel, through which cooling air is able to be fed into the rotatable part, and an exhaust air channel, through which heated exhaust air is able to be taken away from the rotatable part, are disposed in the stationary part, andwherein at least one overpressure relief valve is disposed in the coolant circuit, through which the cooling fluid is configured to be conveyed away in the exhaust air channel.2. The CT system as claimed in claim 1 , wherein the at least one overpressure relief valve is disposed on an anode-side part of the x-ray tube unit.3. The CT system as claimed in claim 1 , wherein the at least one overpressure relief valve is disposed on the cooling device.4. The CT system as claimed in claim 1 , wherein the at least one overpressure relief valve is disposed in at least one cooling fluid line ...

X-ray target and x-ray generation device having the same

An X-ray target and an X-ray generation device including the X-ray target are provided. In an X-ray target, a frame for supporting an irradiation window is divided into a first frame closer to the irradiation window and a second frame on the outer side of the first frame. The irradiation window is formed of a diamond plate having a thermal expansion coefficient of 1×10 −6 /K. The first frame is formed of Mo (molybdenum) having a thermal expansion coefficient of 4.8×10 −6 /K or W (tungsten) having a thermal expansion coefficient of 4.3×10 −6 /K. The second frame is formed of Cu (copper) having a thermal expansion coefficient of 16.5×10 −6 /K. A difference between the thermal expansion coefficients of the irradiation window and the first frame is less than a difference between the thermal expansion coefficients of the irradiation window and the second frame.

System for constant flow generation of x-ray beams

A system for generating X-ray beams from a liquid target includes a vacuum chamber, a diamond window assembly, an electron source, a target material flow system, and an X-ray detector/imager. An electron beam from the electron source travels through the diamond window assembly and into a dynamic target material of the flow system. Preferably, the dynamic target material is lead bismuth eutectic in a liquid state. Upon colliding with the dynamic target material, X-rays are generated. The generated X-rays exit through an X-ray exit window to be captured by the X-ray detector/imager. Since the dynamic target material is constantly in fluid motion within a pipeline of the flow system, the electron beam always has a new target area which is at a controlled operational temperature and thus, prevents overheating issues. By providing a small focus area for the electron beams, the overall imaging resolution of the X-rays is also improved.

TRANSPARENT TYPE FLAT PANEL X-RAY GENERATION APPARATUS AND X-RAY IMAGING SYSTEM

An X-ray generation apparatus includes: an electron emission device comprising a plurality of electron emission units that emit electrons; a transmission type X-ray emission unit for emitting an X-ray by electrons emitted by the plurality of electron emission units; and a vacuum chamber for shielding the electron emission device and the transmission type X-ray emission unit by using vacuum. An X-ray imaging system includes an X-ray detection apparatus for detecting an X-ray that is irradiated from the X-ray generation apparatus and passes through an object. 1. An X-ray generation apparatus comprising:an electron emission device comprising a plurality of electron emission units that are independently driven and emit electrons;a transmission type X-ray emission unit for emitting an X-ray by electrons emitted by the plurality of electron emission units; anda vacuum chamber for shielding the electron emission device and the transmission type X-ray emission unit by using vacuum.2. The X-ray generation apparatus of claim 1 , wherein an X-ray transmission window that radiates the X-ray emitted by the X-ray emission unit to the outside of the vacuum chamber is provided in the vacuum chamber.3. The X-ray generation apparatus of claim 2 , wherein the X-ray transmission window comprises Be claim 2 , C claim 2 , Al claim 2 , or a metal alloy including at least one of Be claim 2 , C claim 2 , and Al.4. The X-ray generation apparatus of claim 1 , wherein one or more of the plurality of electron emission units are simultaneously or sequentially driven to emit the electrons claim 1 , andwherein the X-ray emission unit comprises a plurality of X-ray emitters that emit the X-ray by the electrons emitted by the plurality of electron emission units.5. The X-ray generation apparatus of claim 1 , wherein the X-ray emission unit comprises an anode electrode that generates the X-ray by the electrons emitted by the plurality of electron emission units.6. The X-ray generation apparatus of ...

X-RAY GENERATING TUBE INCLUDING ELECTRON GUN, X-RAY GENERATING APPARATUS AND RADIOGRAPHY SYSTEM

Provided is an X-ray generating tube including an electron gun, which includes a grid electrode secured to a support member. In the X-ray generating tube, thermal stress generated at a joining portion between the support member and the grid electrode is reduced, to thereby maintain a position of an electron beam on a target irradiated with the electron beam accurately for a long time. A grid electrode and a support member are secured to each other via a buffer member, which has an elastic coefficient that is lower than elastic coefficients of the grid electrode and the support member, and which is joined to the grid electrode and the support member through a first joining portion on the grid electrode side and a second joining portion on the support member side, respectively. 1. An X-ray generating tube including an electron gun , a grid electrode;', 'a support member configured to support the grid electrode; and', 'a buffer member having an elastic coefficient that is lower than each elastic coefficient of the grid electrode and the support member,, 'the electron gun comprisingwherein the grid electrode and the buffer member are joined to each other to form a first joining portion, and the support member and the buffer member are joined to each other to form a second joining portion, andwherein the grid electrode and the support member are secured to each other via the first joining portion and the second joining portion.2. The X-ray generating tube according to claim 1 , wherein the buffer member has an elastic coefficient that is 10% or more lower than each elastic coefficient of the grid electrode and the support member at ambient temperature.3. The X-ray generating tube according to claim 1 , wherein each one of the grid electrode claim 1 , the buffer member claim 1 , and the support member has a unique coefficient of thermal expansion which meets the following set of relationships: the support member>the buffer member>the grid electrode; and the grid electrode ...

MULTILAYER X-RAY SOURCE TARGET WITH HIGH THERMAL CONDUCTIVITY

In one embodiment, an X-ray source target is provided that includes two or more layers of X-ray generating material at different depths within a source target for an electron beam. In one such embodiment the X-ray generating material in each layer does not extend fully across an underlying substrate surface. 1. An X-ray source target , comprising: two or more X-ray generating layers each comprising X-ray generating material extending less than the full extent of the surface of the structure; and', 'at least one thermally-conductive layer between each pair of X-ray generating layers., 'a structure configured to generate X-rays when impacted by an electron beam, the structure comprising2. The X-ray source target of claim 1 , wherein each X-ray generating layer comprises a thermally conductive material where there is no X-ray generating material.3. The X-ray source target of claim 1 , further comprising a thermally-conductive top-layer deposited over a first X-ray generating layer relative to a cathode-facing surface of the structure.4. The X-ray source target of claim 1 , further comprising a thermally-conductive substrate on which a bottommost X-ray generating layer is formed.5. The X-ray source target of claim 1 , wherein the X-ray generating material within at least one X-ray generating layer is ring-shaped.6. The X-ray source target of claim 1 , wherein the X-ray generating material within at least one X-ray generating layer is circular.7. The X-ray source target of claim 1 , further comprising one or more trenches extending at least through the two or more X-ray generating layers.8. The X-ray source target of claim 1 , wherein the structure comprises a stationary anode structure.9. The X-ray source target of claim 1 , wherein the cross-sectional extent of the X-ray generating material within each X-ray generating layer is sized to correspond to the impact area of an electron beam during operation.10. An X-ray source target claim 1 , comprising: a substrate; and', ...

MULTILAYER X-RAY SOURCE TARGET WITH HIGH THERMAL CONDUCTIVITY

In various embodiments, a multi-layer X-ray source target is provided having two or more layers of target material at different depths and different thicknesses. In one such embodiment the X-ray generating layers increase in thickness in relationship to their depth relative to the electron beam facing surface of the source target, such that X-ray generating layer further from this surface are thick than X-ray generating layers closer to the electron beam facing surface. 1. An X-ray source , comprising:an emitter configured to emit an electron beam; and two or more X-ray generating layers at different depths relative to the emitter-facing surface, each X-ray generating layer having a different thickness; and', 'at least one intervening thermally-conductive layer between each pair of X-ray generating layers., 'a target having an emitter-facing surface and configured to generate X-rays when impacted by the electron beam, the target comprising2. The X-ray source of claim 1 , wherein the two or more X-ray generating layers comprise one or more regions of an X-ray generating material that produces X-rays when impacted by the electron beam.3. The X-ray source of claim 1 , wherein the X-ray generating layers further from the emitter-facing surface are thicker than X-ray generating layers nearer the emitter-facing surface.4. The X-ray source of claim 1 , wherein two or more of the X-ray generating layers comprise different X-ray generating materials.5. The X-ray source of claim 1 , comprising at least two intervening thermally-conductive layers differing in one or both of composition or thickness.6. The X-ray source of claim 1 , wherein the emitter-facing surface comprises a thermally-conductive material.7. The X-ray source of claim 1 , further comprising a thermally-conductive substrate opposite the emitter-facing surface.8. The X-ray source of claim 1 , wherein the thickness of each X-ray generating layer is based on the thermal limit of materials adjacent the respective X ...

X RAY DEVICE FOR CREATION OF HIGH-ENERGY X RAY RADIATION

An x-ray device is for creation of high-energy x-ray radiation. In an embodiment, the x-ray device includes a linear accelerator. The linear accelerator, for creation of x-ray radiation, is embodied so as to create an electron beam directed onto a target, of which the kinetic energy per electron amounts to at least 1 MeV. In an embodiment, the x-ray device further includes a beam limiting device, arranged in the beam path of the electron beam between linear accelerator and the target, including an edge region surrounding a beam limiting device opening. A material thickness of the edge region, in a propagation direction of the accelerated electron beam emerging from the linear accelerator, amounting to less than 10% of the average reach of electrons of the created kinetic energy in the material of the edge region. 1. An x-ray device for creation of high-energy x-ray radiation , comprising:a linear accelerator for creation of x-ray radiation, embodied to create an electron beam directed onto a target, kinetic energy per electron of the x-ray radiation amounting to at least 1 MeV; anda beam limiting device, arranged in a beam path of the electron beam between the linear accelerator and the target, including an edge region surrounding a beam limiting device opening, a thickness of a material of the edge region in a propagation direction of the accelerated electron beam emerging from the linear accelerator amounting to less than 10% of an average reach of electrons of created kinetic energy in the material of the edge region.2. The x-ray device of claim 1 , wherein at least an edge region of the beam limiting device includes graphite.3. The x-ray device of claim 2 , wherein at least the edge region of the beam limiting device is formed by at least one film.4. The x-ray device of claim 3 , wherein the film includes a metal.5. The x-ray device of claim 4 , wherein the film includes at least partly titanium claim 4 , stainless steel or copper or is coated with titanium ...

CHARGED PARTICLE BEAM TARGETS

An apparatus comprises a charged particle beam source and a target () for a charged particle beam. The target comprises a concave outer surface which is at least a segment of a cylinder () having a periodically structured surface (). The charged particle beam is directed parallel to the axis of the cylinder (), with the distance of the charged particle beam from the surface being less than or equal to twice the period of the periodically structured surface () in a direction perpendicular to the charged particle beam. The width of the charged particle beam in a direction perpendicular to the charged particle beam and parallel to the outer surface of the target is less than twice the period of the periodically structured surface () in a direction perpendicular to the charged particle beam. 146.-. (canceled)47. An apparatus comprising a charged particle beam source and a target for a charged particle beam , the target comprising a concave outer surface , the concave outer surface comprising at least a segment of a cylinder with a periodically structured surface , wherein a charged particle beam is directed in a direction parallel to a longitudinal axis of the cylinder , the charged particle beam is distanced from the periodically structured surface by less than or equal to twice a period of the periodically structured surface in a direction perpendicular to the charged particle beam , and the width of the charged particle beam in a direction that is perpendicular to the charged particle beam and that is parallel to the concave outer surface of the target is less than twice the period of the periodically structured surface in the direction perpendicular to the charged particle beam.48. The apparatus as claimed in wherein the concave outer surface comprises a channel extending in a direction parallel to the longitudinal axis of the cylinder claim 47 , wherein the channel is located in a part of the concave outer surface closest to the charged particle beam.49. The ...

STATIONARY X-RAY SOURCE

Embodiments provide a stationary X-ray source for a multisource X-ray imaging system for tomographic imaging. The stationary X-ray source includes an array of thermionic cathodes and, in most embodiments a rotating anode. The anode rotates about a rotation axis, however the anode is stationary in the horizontal or vertical dimensions (e.g. about axes perpendicular to the rotation axis). The elimination of mechanical motion improves the image quality by elimination of mechanical vibration and source motion; simplifies system design that reduces system size and cost; increases angular coverage with no increase in scan time; and results in short scan times to, in medical some medical imaging applications, reduce patient-motion-induced blurring. 1. An X-ray imaging system comprising:a stationary source including:at least one stationary multi-X-ray source array, wherein the stationary multi-X-ray source array includes a plurality of cathodes, andan anode, wherein the anode is stationary with respect to a second and third axes perpendicular to a first axis; anda control system for controlling the stationary source.2. The X-ray imaging system of claim 1 , wherein the anode rotates about a first axis.3. The X-ray imaging system of claim 1 , wherein the control system fires the plurality of cathodes of the at least one stationary multi-X-ray source array with variable pulse widths and times between pulses.4. The X-ray imaging system of claim 1 , wherein the plurality of cathodes of the at least one stationary multi-X-ray source array are fired based on a predetermined sequence.5. The X-ray imaging system of claim 4 , wherein heat distribution in the anode is controlled using the predetermined sequence.6. The X-ray imaging system of wherein the plurality of stationary cathodes include at least one thermionic cathode.7. The X-ray imaging system of claim 1 , further comprising:a collimator for collimating X-rays generated when electrons emitted by the at least one stationary ...

MBFEX TUBE

A MBFEX tube () for an x-ray device comprises, in a vacuum tube (), an anode () designed as a cooling finger and securely arranged in the vacuum tube, and a plurality of securely arranged cathodes (), wherein the vacuum tube () comprises a plurality of cathode feed lines () and no more than two high-voltage bushings (), in a high-voltage bushing () a coolant pipe () is passed through by an internal coolant inner pipe (), the coolant pipe () and the coolant inner pipe () are provided for cooling the anode () with a liquid coolant, the cathodes () are provided for field emission of electrons and are arranged on the anode () for generating x-ray sources (Q). 1. A multibeam field emission X-ray (MBFEX) tube for an x-ray device which comprises , in a vacuum tube ,an anode designed as a cooling finger and securely arranged in the vacuum tube, and 'the coolant pipe and the coolant inner pipe are provided for cooling the anode with a liquid coolant, the cathodes are provided for field emission of electrons and are in each case oriented toward the anode for generating x-ray sources.', 'wherein the vacuum tube comprises a plurality of cathode feed lines and no more than two high-voltage bushings, in a high-voltage bushing a coolant pipe is passed through by an internal coolant inner pipe,'}, 'a plurality of securely arranged cathodes,'}2. The MBFEX tube of claim 1 , wherein the cathode feed lines and the high-voltage bushings are arranged in a row and lying opposite the anode on the vacuum tube.3. The MBFEX tube of claim 2 , wherein the x-ray sources are arranged in a row arrangement on the anode.4. The MBFEX tube of claim 3 , wherein the x-ray sources are each located on a surface section of the anode which is slanted with respect to the center axis of the anode.5. The MBFEX tube of claim 4 , wherein the slanted surface sections are formed by at least one of projections of the anode or ground sections in the anode.6. (canceled)7. The MBFEX tube of claim 5 , wherein the ...

X-RAY SOURCE AND X-RAY IMAGING METHOD

An X-ray imaging method including the following steps is provided. An X-ray source is provided, wherein the X-ray source includes a housing, a cathode, and an anode target. The housing has an end window. The cathode is disposed in the housing, and the anode target is disposed beside the end window. The cathode is caused to provide an electron beam. A portion of the electron beam hits at least a part of areas of the anode target to generate an X-ray and the X-ray is emitted out of the housing through the end window. The X-ray is caused to irradiate an object to generate X-ray image information. An image detector is used to receive the X-ray image information. Besides, an X-ray source is also provided. 1. An X-ray source , adapted to providing an X-ray , the X-ray source comprising:a housing comprising an end window, wherein the X-ray is emitted out of the housing through the end window;an anode target disposed beside the end window and adapted to rotating around an axis;a cathode disposed in the housing and adapted to providing an electron beam, wherein a portion of the electron beam hits the rotating anode target to generate the X-ray that passes through the end window; anda shielding unit comprising an opening and disposed on a traveling path of the electron beam and between the cathode and the anode target for shielding another portion of the electron beam, wherein the portion of the electron beam that hits the anode target passes through the shielding unit through the opening of the shielding unit.2. The X-ray source according to claim 1 , wherein the opening of the shielding unit rotates relative to the anode target claim 1 , and the opening is adapted to rotating around a central axis of the shielding unit.3. The X-ray source according to claim 2 , wherein the central axis is consistent with a central point of the electron beam.4. The X-ray source according to claim 1 , wherein a center of the opening of the shielding unit is aligned with a center of the ...

X-RAY TUBE

An X-ray tube includes an electron gun, a target that generates X-rays, and a vacuum housing that accommodates the electron gun and the target. The vacuum housing has a metal portion having an X-ray emission window, and an insulation valve connected to the metal portion. The metal portion has a cylinder portion in which the X-ray emission window is provided and which surrounds a tube axis of the vacuum housing, and a tapered portion which is connected to an end portion of the cylinder portion, surrounds the tube axis, and protrudes such that a connection part between the metal portion and an insulation valve is covered. The tapered portion has a shape increased in diameter such that a separation distance between a distal end portion and the tube axis is longer than a separation distance between a base end portion and the tube axis. 1. An X-ray tube comprising:an electron gun that emits electrons;a target that generates X-rays when electrons emitted from the electron gun are incident on the target; anda vacuum housing that accommodates the electron gun and the target,wherein the vacuum housing has a metal portion which has an X-ray emission window emitting X-rays to the outside and a valve portion which is formed of an insulating material and is connected to the metal portion,wherein the metal portion has a first part in which the X-ray emission window is provided and which surrounds a central axis of the vacuum housing, and a second part which is connected to an end portion of the first part on the valve portion side, surrounds the central axis, and protrudes such that a connection part between the metal portion and the valve portion is covered, andwherein the second part has a shape increased in diameter such that a separation distance between a distal end portion on a side opposite to a base end portion connected to the first part and the central axis is longer than a separation distance between the base end portion and the central axis.2. The X-ray tube according ...

X-Ray Tube Single Anode Bore

An x-ray source can include an x-ray tube, and a heat sink for removal of heat from the x-ray tube. The heat sink can be thermally coupled to the anode and can extend away from the anode along a heat sink longitudinal axis. The heat sink can have a base and a fin extending from the base. The base can have a greater thickness nearer the anode, and a reduced thickness along the heat sink longitudinal axis to a smaller thickness farther from the anode. 1. An x-ray source comprising:an x-ray tube including a cathode and an anode electrically insulated from one another, the cathode configured to emit electrons in an electron beam towards the anode, and the anode configured to emit x-rays out of the x-ray tube in response to impinging electrons from the cathode;a heat sink thermally coupled to the anode, and extending away from the anode along a heat sink longitudinal axis;the heat sink having a base and a fin extending from the base;the base having a greater thickness nearer the anode and reducing in thickness along the heat sink longitudinal axis to a smaller thickness farther from the anode.2. The x-ray source of claim 1 , wherein Th/Th≥1.5 claim 1 , where This the greater thickness of the base nearer the anode claim 1 , This the smaller thickness of the base farther from the anode claim 1 , both thicknesses measured perpendicular to the heat sink longitudinal axis and in a single plane parallel to and passing through the heat sink longitudinal axis.3. The x-ray source of claim 2 , wherein 10≥Th/Th≥2.4. The x-ray source of claim 1 , wherein the greater thickness nearer the anode and reducing in thickness along the heat sink longitudinal axis to the smaller thickness farther from the anode is on each of two opposite sides of the heat sink longitudinal axis.5. The x-ray source of claim 1 , wherein:the fin comprises an array of fins arrayed along the heat sink longitudinal axis;each fin of the array of fins extends from the base in a direction perpendicular to the heat ...

X-Ray Sources

This specification describes an anode for an X-ray tube with multiple channels, where each channel defines an electron aperture through which electrons from a source pass to strike a target and a collimating aperture through which X-rays produced at the target pass out of the anode as a collimated beam. At least a portion of the walls of each channel are lined with an electron absorbing material for absorbing any electrons straying from a predefined trajectory. The electron absorbing material has a low atomic number, high melting point and is stable in vacuum. Graphite may be used as the electron absorbing material. 1. An anode for an X-ray tube comprising a source of electrons and multiple channels , each channel comprising:a target defined by a plane;an electron aperture through which electrons from the source of electrons pass to strike said target, wherein said electron aperture comprises side walls, each of said side walls having a surface, and a central axis; anda collimating aperture through which X-rays produced at the target pass out of the anode as a collimated beam, wherein said collimating aperture comprises side walls, each of said side walls having a surface, and a central axis and wherein at least a portion of the surfaces of the side walls of the electron aperture and the surfaces of the side walls of the collimating aperture are lined with an electron absorbing material.2. The anode of claim 1 , wherein the electron absorbing material is adapted to absorb any electrons straying from a predefined trajectory.3. The anode of wherein the electron absorbing material has a low atomic number.4. The anode of wherein the electron absorbing material has a high melting point.5. The anode of wherein the electron absorbing material is stable in a vacuum.6. The anode of wherein the electron absorbing material is graphite.7. The anode of wherein a thickness of the graphite is 0.1 to 2 mm.8. The anode of wherein the electron absorbing material is boron.9. The anode ...