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 ...

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 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 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 ...

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 ...

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. 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 ...

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

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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.

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 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 ...

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 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.

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 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 ...

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 ...

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 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 ...

DIVERGING X-RAY SOURCES USING LINEAR ACCUMULATION

A compact source for high brightness x-ray generation is disclosed. The higher brightness is achieved through electron beam bombardment of multiple regions aligned with each other to achieve a linear accumulation of x-rays. This may be achieved through the use of x-ray targets that comprise microstructures of x-ray generating materials fabricated in close thermal contact with a substrate with high thermal conductivity. This allows heat to be more efficiently drawn out of the x-ray generating material, and allows bombardment of the x-ray generating material with higher electron density and/or higher energy electrons, leading to greater x-ray brightness. The orientation of the microstructures allows the use of a take-off angle at or near 0°, allowing the accumulation of x-rays from several microstructures to be aligned and be used to form a beam in the shape of an annular cone. 1. A high brightness x-ray source comprising:a vacuum chamber;and, within the vacuum chamber,at least one electron beam emitter; andat least one target comprising a substrate comprising a first selected material;said target having a predetermined surface facing the electron beam emitter,and having, within the target and adjacent to said predetermined surface, 'and a depth into the target defined as parallel to the normal of said predetermined surface;', 'a contiguous x-ray generating volume having an orthogonal length and width defined in a plane perpendicular to the normal of said predetermined surface,'}said x-ray generating volume comprising:a plurality of discrete structures comprising a second selected x-ray generating material that make up a predetermined volume fraction of more than 10% and less than 70% of the x-ray generating volume;said source additionally having an x-ray beam axis selected to have a take-off angle of less than 6 degrees;and, for any ray oriented parallel to the x-ray beam axis that overlaps with the x-ray generating volume,the sum of the lengths of the segments of ...

X-Ray Sources

The present application is directed to an anode for an X-ray tube. The X-ray tube has an electron aperture through which electrons emitted from an electron source travel subject to substantially no electrical field and a target in a non-parallel relationship to the electron aperture and arranged to produce X-rays when electrons are incident upon a first side of the target, wherein the target further comprises a cooling channel located on a second side of the target. The cooling channel comprises a conduit having coolant contained therein. The coolant is at least one of water, oil, or refrigerant. 1. An anode for an X-ray tube comprisinga. an electron aperture through which electrons emitted from an electron source travel subject to substantially no electrical field; andb. a target in a non-parallel relationship to said electron aperture and arranged to produce X-rays when electrons are incident upon a first side of said target, wherein said target further comprises a cooling channel located on a second side of said target.2. The anode of wherein the cooling channel comprises a conduit having coolant contained therein.3. The anode of wherein the coolant is at least one of water claim 2 , oil claim 2 , or refrigerant.4. The anode of wherein said target comprises more than one target segment claim 1 , wherein each of said target segments is in a non-parallel relationship to said electron aperture and arranged to produce X-rays when electrons are incident upon a first side of said target segment claim 1 , wherein each of said target segments further comprises a cooling channel located on a second side of said target segment.5. The anode of wherein said second sides of each of said target segments are attached to a backbone.6. The anode of wherein the backbone is a rigid claim 5 , single piece of metal.7. The anode of wherein the backbone comprises stainless steel.8. The anode of wherein at least one of said target segments is connected to said backbone using a bolt.9. ...

Radiation generating apparatus

A radiation generating apparatus includes a target base, a target, an electronic beam generating device, a tube, a tank, and a porous structure. The target is disposed on the target base. The electronic beam generating device is adapted to generate an electronic beam, and the electronic beam is emitted to the target to generate a radiation. The tube accommodates the target and the electronic beam generating device. The tank is connected to the target base and accommodates the tube. The porous structure is roundly disposed between the tank and the tube and contacts an inner wall of the tank and an outer wall of the tube. A cooling fluid flows through the porous structure to dissipate the heat of the porous structure.

RADIATION GENERATING APPARATUS

A radiation generating apparatus includes a target base, a target, an electronic beam generating device, a tube, a tank, and a porous structure. The target is disposed on the target base. The electronic beam generating device is adapted to generate an electronic beam, and the electronic beam is emitted to the target to generate a radiation. The tube accommodates the target and the electronic beam generating device. The tank is connected to the target base and is accommodated by the tube. The porous structure is disposed in the tank and contacts the target base. A cooling fluid flows through the porous structure to dissipate the heat of the porous structure. 1. A radiation generating apparatus , comprising:a target base;a target, disposed on the target base;an electronic beam generating device, adapted to generate an electronic beam, wherein the electronic beam is emitted to the target to generate a radiation;a tube, accommodating the target and the electronic beam generating device;a tank, connected to the target base and being accommodated by the tube; anda porous structure, disposed in the tank and contacting the target base;wherein a cooling fluid flows through the porous structure, so as to dissipate a heat of the porous structure.2. The radiation generating apparatus as claimed in claim 1 , wherein the tank includes a thermal conductive structure therein claim 1 , the thermal conductive structure connects to the target base and contacts the porous structure.3. The radiation generating apparatus as claimed in claim 1 , wherein the tank includes at least one cooling fluid inlet and at least one cooling fluid outlet claim 1 , wherein the cooling fluid flows into the tank through the cooling fluid inlet claim 1 , and flows out of the tank through the cooling fluid outlet.4. The radiation generating apparatus as claimed in claim 3 , further comprising a temperature sensing element claim 3 , wherein the temperature sensing element is disposed at the cooling fluid ...

X-Ray Tube Single Anode Bore

An x-ray tube anode can include an electron hole extending from an electron entry at an exterior of the anode into a core of the anode, and an x-ray hole extending from an x-ray exit at the exterior of the anode into the core of the anode. The x-ray hole can intersect the electron hole at the core of the anode. In one embodiment, the electron hole and the x-ray hole can form a seamless bore from the electron entry to the x-ray exit. In another embodiment, the anode can be a single, integral, monolithic material with a single bore extending therethrough. In another embodiment, the core of the anode can include a target material located at a concave wall of the core of the anode. 1. A side-window x-ray tube comprising:a cathode and an anode electrically insulated from one another;the anode being a single, integral, monolithic material with a single bore extending therethrough, the single bore consisting of an electron hole intersecting with an x-ray hole in a core of the anode, the electron hole and the x-ray hole having a cylindrical shape;the electron hole extending from an exterior of the anode into the core of the anode and aimed to allow the electrons to pass into the core of the anode, and the x-ray hole extending from the exterior of the anode into the core of the anode;the cathode configured to emit electrons in an electron beam towards the anode;the core of the anode including a target material configured for generation of x-rays in response to impinging electrons from the cathode;an x-ray window, separate from the target material, covering the x-ray hole at the exterior of the anode and hermetically sealed to the anode;the x-ray hole aimed for emission of x-rays from the core of the anode through the x-ray hole, then through the x-ray window and out of the x-ray tube;{'sub': S', 'L', 'S', 'L, 'D/D≥0.5, where Dis a smallest diameter of one of the electron hole or the x-ray hole and Dis a largest diameter of the other of the electron hole or the x-ray hole; ...

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. 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; 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 second material configured to generate x-rays upon irradiation by electrons., 'a plurality of structures separate from one another and on or embedded in at least a portion of the surface, each of at least two structures of the plurality of structures comprising2. The x-ray target of claim 1 , wherein the first material of each of the at least two structures extends along a direction parallel to the portion of the surface by a distance in a range of 0.2 millimeter to 3 millimeters.3. The x-ray target of claim 1 , wherein the first material of each of the at least two structures extends along a direction parallel to the portion of the surface by ...

TECHNOLOGIES FOR ENERGY-MODULATED RADIATION THERAPY

Described are devices, systems, and methods for modulating the spectral energy distribution produced by an x-ray source via control of the energy of the x-ray-generating electron beam, e.g., for energy-modulated radiation therapy or other purposes. In some embodiments, such energy modulation is achieved by an add-on device to a linear accelerator. Also disclosed are computational methods and computer program products for planning energy-modulated therapy. 1. A method for energy-modulated radiotherapy , the method comprising:generating at least one x-ray beam by directing an electron beam onto an x-ray converter target; andwhile moving the at least one x-ray beam around a treatment target during irradiation of the treatment target, dynamically controlling a spectral energy distribution of the at least one x-ray beam as a function of at least angular position in accordance with a treatment plan by controlling an energy of the electron beam.2. The method of claim 1 , wherein dynamically controlling the spectral energy distribution of the at least one x-ray beam comprises generating at least one energy distribution having a maximum energy of at least about 6 MeV and at least one energy distribution having a maximum energy of less than about 4 MeV.3. The method of claim 1 , wherein dynamically controlling the spectral energy distribution of the at least one x-ray beam comprises generating at least one energy distribution having a maximum energy of less than 2 MeV.4. The method of claim 1 , wherein controlling the spectral energy distribution of the at least one x-ray beam comprises claim 1 , for at least one of the angular positions claim 1 , blending two spectral energy distributions having different maximum energies.5. The method of claim 1 , wherein the electron beam is generated in a linear accelerator claim 1 , and wherein dynamically controlling the energy of the electron beam comprises dynamically reducing the energy of the electron beam upon exiting the linear ...

X-RAY TUBE DEVICE

According to one embodiment, an X-ray tube device includes an anode target including a target surface and a cathode including a plurality of electron generation sources configured to emit the electrons, a vacuum envelope configured to house the cathode and the anode target and internally sealed in a vacuum airtight manner, and a quadrupole magnetic-field generator configured to form a magnetic field by being supplied with a current from a power source, the quadrupole magnetic-field generator being installed on an outer side of the vacuum envelope and constituted of a quadrupole surrounding a periphery of electron orbits of the electrons emitted simultaneously from each of the plurality of electron generation sources. 1. An X-ray tube device comprising:an anode target comprising a target surface bombarded by electrons to generate X rays and a cathode comprising a plurality of electron generation sources configured to emit the electrons;a vacuum envelope configured to house the cathode and the anode target and internally sealed in a vacuum airtight manner; anda quadrupole magnetic-field generator configured to form a magnetic field by being supplied with a current from a power source, the quadrupole magnetic-field generator being installed on an outer side of the vacuum envelope and constituted of a quadrupole surrounding a periphery of electron orbits of the electrons emitted simultaneously from each of the plurality of electron generation sources.2. The X-ray tube device of claim 1 , whereinthe quadrupole magnetic-field generator is installed perpendicularly eccentrically to a central axis of the cathode.3. The X-ray tube device of claim 1 , whereinthe vacuum envelope further comprises a housing portion configured to extend outward at a position opposed to the anode target and to house the cathode, the housing portion comprising a small diameter portion formed between the anode target and the cathode and having a smaller diameter than surrounding parts, andthe ...

X-RAY TUBE DEVICE

According to one embodiment, an X-ray tube device includes a cathode which emits an electron in a direction of an electron path, an anode target which faces the cathode and includes a target surface generating an X-ray, a vacuum envelope which accommodates the cathode and the anode target and is sealed in a vacuum-tight manner, and a quadrupole magnetic field generation unit which forms a magnetic field when direct current is supplied from an electric source, is eccentrically provided with respect to a straight line accordance with the electron path outside the vacuum envelope, and includes a quadrupole surrounding a circumference of a part of the electron path. 1. An X-ray tube device comprising:a cathode which emits an electron in a direction of an electron path;an anode target which faces the cathode and comprises a target surface generating an X-ray when the electron emitted from the cathode collides with the target surface;a vacuum envelope which accommodates the cathode and the anode target and is sealed in a vacuum-tight manner; anda quadrupole magnetic field generation unit which forms a magnetic field when direct current is supplied from an electric source, is eccentrically provided with respect to a straight line accordance with the electron path outside the vacuum envelope, and comprises a quadrupole surrounding a circumference of a part of the electron path.2. The X-ray tube device of claim 1 , whereinthe vacuum envelope further comprises an accommodation unit extending to an external side at a position facing the anode target, accommodating the cathode, and comprising a small radial portion having a radius less than a peripheral radius between the anode target and the cathode, andthe quadrupole magnetic field generation unit surrounds a periphery of the small radial portion.3. The X-ray tube device of claim 1 , whereinthe vacuum envelope comprises a concave portion hollowed from an external side, andthe quadrupole is accommodated in the concave portion. ...

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; anda 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 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 including a ...

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).

X-Ray Tube and X-Ray Generating Apparatus

The disclosure relates to an X-ray tube, comprising a cathode and an anode, the cathode and anode being accommodated in a housing which provides a vacuum environment. 1. An X-ray tube , comprising:a cathode configured to produce electrons emitted towards a vacuum when energized;an anode configured to comprise a rotatable anode target disk to emit X-rays after sustaining bombardment by the electrons,wherein the cathode and the anode are contained within a housing that provides a vacuum environment, a rotation shaft configured to rotate with the anode target disk; and', 'a bearing part comprising multiple bearing bodies that are (i) disposed at an outer side of the rotation shaft, (ii) in contact with the rotation shaft, and (iii) in a rolling fit with the rotation shaft, the multiple bearing bodies comprising at least one first rolling body configured to be located at a near-end position of the bearing assembly with respect to a position of the anode target disk, and at least one second rolling body configured to be located at a far-end position of the bearing assembly with respect to the position of the anode target disk,, 'a bearing assembly coupled to the anode target disk, the bearing assembly comprisingwherein a surface of the first rolling body is coated with a first lubrication layer, and a surface of the second rolling body is coated with a second lubrication layer, andwherein a temperature at which the first lubrication layer remains in a solid state is greater than a temperature at which the second lubrication layer remains in a solid state.2. The X-ray tube as claimed in claim 1 , wherein a hardness of the second lubrication layer is less than a hardness of the first lubrication layer.3. The X-ray tube as claimed in claim 1 , wherein the first lubrication layer comprises a silver plating layer.4. The X-ray tube as claimed in claim 1 , wherein the second lubrication layer comprises at least one of a lead plating layer or a molybdenum disulfide plating layer ...

X射线装置的旋转阳极的内支承件的冷却体和x射线装置

本实用新型涉及一种X射线装置的旋转阳极(1)的内支承件(4)的冷却体(10)，其具有主部段(14)，所述主部段具有基本上围绕冷却体(10)的主轴线(15)圆柱形环绕的侧表面(11)，并且沿主轴线(15)的方向观察从主部段(14)的第一轴向端部(16)延伸至第二轴向端部(17)。主部段(14)具有用于液态的或气态的冷却介质(13)的通道(18)，所述通道具有第一通道部段(19)和第二通道部段(20)。这两个通道部段(19，20)从主部段(14)的第一轴向端部(16)开始分别围绕主轴线(15)朝向第二轴向端部(17)螺旋状地环绕。所述通道部段在主部段(14)的第二轴向端部(17)处相互合并。

X-ray tube for fast kilovolt-peak switching

The present invention relates to a hybrid anode structure (100) for fast-kilovolt-peak switching for dual energy CT, the hybrid anode structure comprising: an auxiliary anode (10), which comprises a first target area (12), which is configured to receive a first portion (42) of an electron beam; a main anode (20), which comprises a second target area (22), which is configured to receive a second portion (44) of the electron beam and to convert the second portion of the electron beam into X-rays (50); and a deflector (30), which is configured to deflect an incident electron beam (40) and to spread the incident electron beam (40) between the first target area (12) of the auxiliary anode (10) and the second target (22) area of the main anode (20).

Computing temperature of e.g. of x-ray tube anode involves converting differential equation to dimensionless form, determining solution or inverse function to produce matrix, computer-assisted derivation of temperature for a given time

The method involves using the differential equation dT/dt = b - cT, where T is the temperature of the solid body, t is time, b is the temperature change per unit time caused by energy take-up and cT is the temperature change caused by removing heat, converting it to a dimensionless differential equation, determining a solution function or inverse function to produce a matrix and computer-assisted derivation of the temperature for a given time or of the time for a given temperature.

Rotary bulb radiator for producing x-rays has rotary bulb whose inner floor contains anode of first material; floor exterior carries structure for accommodating heat conducting element(s) of higher thermal conductivity material

The device has a rotary bulb whose inner floor (2) contains an anode made of a first material. The exterior (3) of the bulb floor carries structure, at least in an annular section opposite the anode, for accommodating at least one heat conducting element (9) of a second material of higher thermal conductivity than the first material. The heat conducting element is accommodated in the structure by forming expansion joints.

Load computer with a program for carrying out a method for simulating a thermal load of an X-ray device and X-ray device

Lastrechner (2) mit einem Programm zur Durchführung eines Verfahrens zur Simulation einer thermischen Belastung einer Röntgeneinrichtung mit i Anoden (A1, A2), wobei i = 1, 2, 3, ... ist, wobei zur Kühlung der i-ten Anode (A1, A2) ein i-tes Fluid (F1, F2), zur Kühlung des ersten bis i-ten Fluids (F1, F2) ein erstes Kühlfluid (KF1) und zur Kühlung des ersten Kühlfluids (KF1) ein zweites Kühlfluid (KF2) vorgesehen sind, wobei der Lastrechner eine Temperaturüberwachungseinheit zur Überwachung einer ersten Temperatur (TF1, TF2) und/oder einer i-ten Temperatur (TF1, TF2), einen Sensor zum Ermitteln einer ersten Kühltemperatur (TKF1), einen i-ten Temperatursensor zum Ermitteln der i-ten Temperatur (TF1, TF2) aufweist, wobei das Programm zur Durchführung des Verfahrens den folgenden Schritt umfasst: zeitlich vorausschauendes Berechnen der die thermische Belastung in einem Zeitintervall wiedergebenden ersten Kühltemperatur (TKF1) des ersten Kühlfluids (KF1) anhand einer das folgende lineare Differenzialgleichungssystem lösenden Lösungsfunktion: T Fi = l Pi ·P i – k 1i ·(T Fi ... Load computer (2) with a program for carrying out a method for simulating a thermal load of an X-ray device with i anodes (A1, A2), where i = 1, 2, 3, ..., wherein for cooling the i-th anode ( A1, A2) an i-th fluid (F1, F2), for cooling the first to i-th fluids (F1, F2) a first cooling fluid (KF1) and for cooling the first cooling fluid (KF1) a second cooling fluid (KF2) are provided, wherein the load computer has a temperature monitoring unit for monitoring a first temperature (TF1, TF2) and / or an ith temperature (TF1, TF2), a sensor for determining a first cooling temperature (TKF1), an ith temperature sensor for determining the ith Temperature (TF1, TF2), wherein the program for carrying out the method comprises the following step: calculating the thermal load in a time interval in a first cooling temperature (TKF1) of the first cooling fluid (KF1) by means of a solution function that solves ...

Method for calculating the temperature of a solid

Verfahren zur Berechnung der Temperatur (T A ) eines Festkörpers (2) oder der für eine Änderung der Temperatur des Festkörpers (2) benötigten Zeit (t), mit folgenden Schritten: i) Verwendung der Differenzialgleichung dT/dt = b – cT, wobei T die Temperatur (T A ) des Festkörpers (2), t die Zeit, b die pro Zeiteinheit durch Energieaufnahme verursachte Temperaturänderung ΔT EA , cT die pro Zeiteinheit durch Ableitung von Wärme verursachte Temperaturänderung ΔT WA ist, ii) Umformen der Differenzialgleichung in die folgende dimensionsfreie Differenzialgleichung dϑ/dτ = 1 – ϑ, wobei ϑ eine dimensionsfreie Temperatur, τ eine dimensionsfreie Zeit ist, iii) Ermitteln einer Lösungsfunktion ϑ(τ) oder deren Umkehrfunktion τ(ϑ) aus der dimensionsfreien Differenzialgleichung zum Erstellen einer Matrix A = (a ij ), mit i = 1,2; j ∊ N + ; a 1j = τ j und a 2j = ϑ j , wobei bei Verwenden einer Lösungsfunktion ϑ(τ) und vorgegebenen Werten τ j gilt: ϑ j = ϑ(τ j ) und bei Verwenden einer Umkehrfunktion... Method for calculating the temperature (T A ) of a solid (2) or the time (t) required for a change in the temperature of the solid (2), comprising the following steps: i) Use of the differential equation dT / dt = b - cT, in which T is the temperature (T A ) of the solid (2), t the time b the temperature change ΔT EA caused by energy absorption per unit time, cT is the temperature change ΔT WA caused by dissipation of heat per unit time, ii) transforming the differential equation into the following dimensionless differential equation dθ / dτ = 1 - θ, in which θ is a dimension-free temperature, τ is a dimensionless time, iii) determining a solution function θ (τ) or its inverse function τ (θ) from the dimensionless differential equation to produce a matrix A = (a ij ), where i = 1,2; j ∈ N + ; a 1j = τ j and a 2j = θ j , where using a solution function θ (τ) and given values τ j we have: θ j = θ (τ j ) and using an inverse function ...

Rotary Röngtenröhre

Drehkolben-Röntgenröhre mit einem um eine Drehachse (A) drehbar gelagerten, eine Mantelwand (5) aufweisenden Kolben (1) mit einer Kathode (2) und einer Anode (3a bis 3e), dadurch gekennzeichnet, dass die Anode (3a bis 3e) einen radial umlaufenden Abschnitt der Mantelwand (5) bildet. Rotary piston X-ray tube with one about an axis of rotation (A) rotatably mounted, a jacket wall (5) comprising a piston (1) with a cathode (2) and an anode (3a to 3e), characterized in that the anode (3a to 3e) forms a radially circumferential portion of the jacket wall (5).

X-ray tube anode

An X-ray tube includes a cathode and an anode. The cathode is configured to generate an electron beam. The anode has at least one hole that faces the electron beam, the hole having sidewalls and a floor. The electron beam impinges on one or more of the sidewalls of the at least one hole so as to emit a first X-ray beam at angles that are not orthogonal to a surface of the anode. The electron beam also impinges on the floor of the at least one hole so as to emit a second X-ray beam, at least some of which is emitted at an angle that is orthogonal to the surface of the anode.

Cooling member of x-ray tube

PURPOSE: A heat discharging member of an X-ray tube is provided to secure the durability and operation reliability of the X-ray tube by discharging heat from a target support. CONSTITUTION: A body is made of cylindrical metal materials. A combination protrusion(21) is downwardly protruded from the lower side of the body and has a screw thread which is screwed with a screw groove of an insertion groove of a target support. A circulation path(23) has a U shape. Insulating oil circulates in the circulation path. An inlet is upwardly protruded from the body and is connected to an insulating oil supply device and a supply tube to supply the insulating oil to the circulation path. An outlet(25) discharges the insulating oil from the circulation path.

Rotary anode type x-ray tube

본 발명은 회전양극형 X선관에 관한 것으로서, X선을 방출하는 양극 타겟(13)이 연결된 회전체(16)와, 상기 회전체(16) 사이에 동압식 슬라이딩 베어링이 설치되고 관축을 따라서 형성된 윤활제 수용실(26) 및 윤활제 수용실(26)과 동압식 슬라이딩 베어링을 연결하는 윤활제 통로(27)를 구비하는 고정체(17)와, 진공용기(11)를 구비한 회전양극형 X선관에서, 고정체(17)에 그 단면으로부터 관축방향으로 윤활제 수용실(26) 및 윤활제 통로(27)와 교차하지 않는 구멍(28a,28b)을 형성하고 상기 구멍(28a,28b) 중에 고정체(17) 보다도 열전도성이 높은 고정체 전열부재(29a,29b)를 끼워 맞추어 일체적으로 접합하고 있고, 또는 회전체(16)의 베어링을 구성하는 내측 원통형 구조체(16c)의 외주벽에 이 내측 원통형 구조체 보다도 열전도율이 높은 전열부재(19)가 원통형으로 접합되어 있으며 또는 회전체와 고정체의 양쪽에 절연부재를 설치하는 것으로, 동압식 슬라이딩 베어링 부분의 온도의 균일화를 얻을 수 있음과 동시에 온도상승을 억제하고 제조가 용이하며 기계적 강도가 높고 장기에 걸쳐 안정적인 회전특성을 유지할 수 있는 회전양극형 X선관을 제공하는 것을 특징으로 한다. The present invention relates to a rotating bipolar X-ray tube, comprising: a rotating body (16) to which an anode target (13) that emits X-rays is connected, and a hydrodynamic sliding bearing is installed between the rotating body (16) and formed along a tube axis. In the rotating anode type X-ray tube having the lubricant receiving chamber 26 and the lubricant passage 27 connecting the lubricant receiving chamber 26 and the lubricant passage 27 connecting the hydrostatic sliding bearing, and the vacuum container 11 In the fixing body 17, holes 28a and 28b which do not intersect the lubricant accommodating chamber 26 and the lubricant passage 27 are formed in the tube axis direction from the end face thereof, and the fixing body 17 is formed in the holes 28a and 28b. The inner cylindrical structure is fitted to the outer circumferential wall of the inner cylindrical structure 16c constituting the bearing of the rotating body 16 by fitting the fixed heat transfer members 29a and 29b having higher thermal conductivity than Heat transfer member 19 having a higher thermal conductivity than the cylindrical In addition, by providing insulating members on both the rotating body and the fixed body, it is possible to obtain uniform temperature of the hydrodynamic sliding bearing part, at the same time to suppress the temperature rise, facilitate the manufacture, high ...

X-ray generator

一种X—射线发生器，可在不破坏工作系统真空的条件下进行靶体和窗的更换，可在系统内部清洁靶面，并且能以较高的功率状态工作，而靶体的各阳极面无交叉干扰，可获得高重复性定量分析结果。 X—射线发生器有真空工作室、枪体、清洁室、超高真空阀和热耗散装置等主要部分，其中热耗散装置采用低温传导法取代惯用的水冷却技术，枪体采用多靶体四靶面和可换窗设计。 本发明主要用于X—光电子能谱仪和其它需用X—射线源的仪器。

X-ray tube anode cooling device and systems incorporating same

An anode target for use within an x-ray generating device including a target frame having an inner surface and an outer surface and a thermal energy transfer device. The thermal energy transfer device including a heat exchanger having an inner surface and an outer surface, at least a portion of the outer surface of the heat exchanger positioned adjacent to at least a portion of the inner surface of the target frame; a cooling medium circulating through the heat exchanger for convectively cooling the anode target; and a thermal coupling medium disposed between the inner surface of the target frame and the outer surface of the heat exchanger, the thermal coupling medium thermally coupling the target frame with the heat exchanger while permitting relative motion between the target frame and the heat exchanger.

Rotary cathode x-ray tube equipment

In a rotary cathode X-ray tube equipment having a ring-shaped hollow vacuum vessel (1), a ring-shaped anode target (6) fixed within said vacuum vessel, a ring-shaped rotary member (28) rotatably disposed in an opposed relation to said anode target within said vacuum vessel, at least one cathode portion (7) attached to said rotary member on the side opposed to said anode target, and an X-ray radiation window (40) for passing the X-ray generated at the anode target therethrough, said X-ray radiation window being mounted to said inner ring of said vacuum vessel, the improvement comprising a plane joint surface perpendicular to the rotational axis of said rotary member, a cylindrical joint surface parallel to said rotational axis of said rotary member, both of which are disposed between said X-ray radiation window and said vacuum vessel, and slidable vacuum seals provided for said respective joint surfaces.

X-RAY GENERATOR TUBE WITH ADJUSTABLE TARGET ASSEMBLY

Le domaine de l'invention est celui des tubes générateurs de rayons X. L'invention concerne plus particulièrement la disposition des surfaces émettrices qui sont la source du rayonnement X.On sait que l'inclinaison de la surface émettrice dite cible sur le faisceau électronique conditionne l'intensité d'émission de rayons X et la résolution du tube. L'ensemble porte-cible selon l'invention permet de régler cette inclinaison en fonction de l'application souhaitée. Pour les applications à haute énergie nécessitant un circuit de refroidissement, la disposition de la pièce permet également d'améliorer sensiblement la géométrie dudit circuit de refroidissement afin d'accroître sensiblement son efficacité.Plusieurs dispositions du circuit de refroidissement sont présentés ainsi que leur procédé de réalisation. The field of the invention is that of X-ray generator tubes. The invention relates more particularly to the arrangement of the emitting surfaces which are the source of the X-rays. It is known that the inclination of the emitting surface known as the target on the electron beam conditions the intensity of the X-ray emission and the resolution of the tube. The target holder assembly according to the invention makes it possible to adjust this inclination as a function of the desired application. For high-energy applications requiring a cooling circuit, the layout of the part also makes it possible to significantly improve the geometry of said cooling circuit in order to significantly increase its efficiency. Several arrangements of the cooling circuit are presented as well as their method of production.

DEVICE AND METHOD FOR TRANSMITTING X-RAYS

ANODE ASSEMBLY WITH HIGH THERMAL DISSIPATION FOR X-RAY TUBE AND TUBE THUS OBTAINED.

X-RAY TUBES AND X-RAY SYSTEMS COMPRISING A THERMAL GRADIENT DEVICE

Un dispositif de transfert d'énergie thermique utilisé avec un dispositif de génération de rayons X comprend un ensemble d'anode (40) comportant une cible (48), un ensemble de cathode à une certaine distance de l'ensemble d'anode (40), configuré pour émettre des électrons frappant la cible (48), pour produire des rayons X et de la chaleur, et un arbre rotatif (58) supporté par un ensemble de palier (50). Le dispositif comprend un dispositif à gradient thermique (72) au voisinage d'une extrémité de l'arbre (58) et en communication thermique avec celle-ci, le dispositif à gradient thermique (72) transférant de la chaleur pour l'éloigner de cette extrémité de l'arbre (58), et une structure à ailettes (80) au voisinage du dispositif à gradient thermique (72) et en communication thermique avec celui-ci, la structure à ailettes (80) refroidissant par convexion le dispositif à gradient thermique (72). A thermal energy transfer device used with an X-ray generating device includes an anode assembly (40) having a target (48), a cathode assembly at a distance from the anode assembly (40 ), configured to emit electrons striking the target (48), to produce X-rays and heat, and a rotating shaft (58) supported by a bearing assembly (50). The device includes a thermal gradient device (72) adjacent to and in thermal communication with one end of the shaft (58), the thermal gradient device (72) transferring heat away from it this end of the shaft (58), and a fin structure (80) in the vicinity of the thermal gradient device (72) and in thermal communication therewith, the fin structure (80) convectionally cooling the device thermal gradient (72).

X-RAY EMISSION DEVICE AND METHOD

Un dispositif d'émission de rayons X destiné à un appareil de radiologie, comprend une cathode (30), une anode (31) rotative, l'anode (31) étant pourvue d'une surface sensiblement cylindrique (49). Le dispositif est apte à former un faisceau d'électrons (50) venant bombarder une portion de la surface sensiblement cylindrique de l'anode qui constitue le foyer (51) d'émission des rayons X. Le dispositif comprend des moyens pour contrôler dynamiquement la position du foyer (51) de l'anode (31) par rapport à une position de référence. An X-ray emission device for an X-ray device comprises a cathode (30), a rotatable anode (31), the anode (31) being provided with a substantially cylindrical surface (49). The device is capable of forming an electron beam (50) bombarding a portion of the substantially cylindrical surface of the anode which constitutes the focal point (51) for emitting X-rays. The device comprises means for dynamically controlling the position of the focus (51) of the anode (31) relative to a reference position.

Patent FR2221808A1

Patent FR2221808B1

X-ray sources

Solder-coated graphite body for rotary anode of X-ray tube

The anode (5) rotated about the axis of a vacuum tube (2) attracts electrons emitted from a cathode (4) towards an impact surface (15) on a target (17) of e.g. W-Zr-Mo alloy soldered to the graphite body (16). The impact area is coated with e.g. W:Re for X-ray emission. The target is applied to the body with excess solder which spreads along the wall of the aperture (18) and forms a coating (20) on the rear surface confined by an annular groove (19). This coating reduces emission of heat in the direction of the roller bearings (7,8).

Computer tomograph

Computertomograph (1) für die mammographische Röntgenbildgebung, welcher eine MBFEX-Röhre (20) und einen Flachbett-Röntgendetektor (30) aufweist, wobei in der MBFEX-Röhre (20) eine Mehrzahl von Kathoden (40) reihenförmig fest angeordnet sind, die Kathoden (40) für die Feldemission von Elektronen vorgesehen sind, sowohl die Geometrie als auch die Strahlungsdichte als auch der Wellenlängenbereich eines Röntgenstrahlenbündels (b) einstellbar ist, die MBFEX-Röhre (20) in Parallelrichtung (z) zu dem Flachbett-Röntgendetektor (30) verschiebbar ist, der Flachbett-Röntgendetektor (30) eine verschiebbare als auch öffnungsverstellbare Röntgenblende (31) aufweist und mit der Röntgenblende (31) ein Abbildungsbereich (A) auf der Detektor-Oberfläche (D) des Flachbett-Röntgendetektor (30) auswählbar und verschiebbar ist. Der vorgeschlagene Computertomograph (1) ist im Vergleich zu herkömmlichen Computertomographen mit rotierenden röntgentechnischen Komponenten besonders leicht und kompakt aufgebaut, mit welchem eine besonders kleine Brennfleckgröße realisierbar ist.

Heat pipe anode for x-ray generator

A rotating anode for x-ray generation uses a heat pipe principle with a heat pipe coolant located in a sealed chamber of a rotating portion of the anode. The rotating portion is positioned relative to a second portion so that relative rotation occurs between the two portions and so that a fluid path exists between the two portions through which an external cooling fluid may flow. The relative motion between the two portions provides a turbulent flow to the cooling fluid. The anode may also include cooling fins that extend into the sealed chamber. The sealed chamber may be under vacuum, and may be sealed by o-rings or by brazing. A closable fill port may be provided via which heat pipe coolant may be added. A balancing mass may be used to balance the anode in two dimensions.

Target for a microfocus or nanofocus X-ray tube

Target (2) für eine Mikrofocus- oder Nanofocus-Röntgenröhre, mit einem Trägerelement (4) und mit wenigstens einem an dem Trägerelement (4) angeordneten; aus einem Targetmaterial bestehenden Targetelement (6) zur Emission von Röntgenstrahlung, wobei das Targetelement (6) das Trägerelement (4) nur teilweise bedeckt, wobei das Trägerelement (4) wenigstens teilweise aus einem Trägermaterial besteht, dessen Wärmeleitkoeffizient ≥ 10 W/(cm × K) ist und wobei das Trägermaterial zur Erhöhung der elektrischen Leitfähigkeit dotiert ist. Target (2) for a microfocus or nanofocus X-ray tube, with a carrier element (4) and with at least one on the support element (4) arranged; target element (6) consisting of a target material for emitting X-radiation, wherein the target element (6) covers the carrier element (4) only partially, wherein the carrier element (4) consists at least partially of a carrier material whose thermal conductivity coefficient ≥ 10 W / (cm × K) and wherein the carrier material is doped to increase the electrical conductivity.

Bremsstrahlung target for radiation therapy system

Described herein is a medical accelerator target including a target constructed of a material having an atomic number that is greater than or equal to 40 or having a thickness of less than 0.2 radiation lengths.