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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2442. Отображено 100.
19-01-2012 дата публикации

X-Ray Tube Anodes

Номер: US20120014510A1
Автор: Edward James Morton, Martin Hunt, Russell David Luggar
Принадлежит: Rapiscan Systems Inc

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.

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Номер записи: 1
02-02-2012 дата публикации

Industrial x-ray tube

Номер: US20120027177A1
Автор: Kiyoshi Ogata, Makoto Kanbe, Naohisa Osaka, Takahisa Sato, Tetsuo Kani, Yoshihiro Takeda
Принадлежит: Rigaku Corp

An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and X-rays are emitted from the anode. The cathode is formed from graphite. The graphite is a layered crystal obtained by layering a plurality of carbon hexagonal planes. The graphite is cut based on crystal axes of the carbon hexagonal planes. The resulting cut surface is caused to function as an electron-emitting surface. For example, directions of an a- and b-crystal axis may be set so as to be arbitrary between each of the layers of the carbon hexagonal planes, the graphite may be cut along a surface parallel to the c-axis, and the resulting cut surface may be caused to function as an electron-emitting surface. The graphite may also be cut along a surface orthogonal to the c-axis.

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Номер записи: 2
12-04-2012 дата публикации

Polymer layer on x-ray window

Номер: US20120087476A1
Автор: Brian Taylor, Jason Maynard, Keith Decker, Steven Liddiard
Принадлежит: Moxtek Inc

An x-ray window comprising a plurality of thin film layers stacked together, including a thin film layer and a polymer layer. The thin film layer can be diamond, graphene, diamond-like carbon, beryllium, and combinations thereof. The polymer layer can be a polyimide. A boron hydride layer may also be included.

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Номер записи: 3
17-05-2012 дата публикации

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

Номер: US20120121065A1
Автор: Carey Shawn Rogers, Richard Michael Roffers
Принадлежит: General Electric Co

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.

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Номер записи: 4
28-06-2012 дата публикации

X-ray generator

Номер: US20120163550A1
Автор: Koichi Kato, Masahiro Nonoguchi, Masaru Kuribayashi, Masashi Kageyama, Tomohiro Chaki
Принадлежит: Rigaku Corp

Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a Wehnelt electrode for surrounding the filament, an attachment part formed integrally with the Wehnelt electrode, a pedestal to which the attachment part is attached, and a casing for housing the pedestal and the anticathode. The width of the space in which the anticathode is housed by the casing is less than the width of the space in which the pedestal is housed by the casing. The Wehnelt electrode extends into the space in which the anticathode is housed by the casing, in a state in which the attachment part is attached to the pedestal.

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Номер записи: 5
16-08-2012 дата публикации

X-ray generating device with electron scattering element and x-ray system

Номер: US20120207269A1
Автор: Rolf Karl Otto Behling
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

The present invention relates to X-ray generating technology in general. Providing X-ray generating device internal voltage sources or potentials may help reduce necessary feed-throughs into an evacuated envelope of an X-ray generating device. Consequently, an X-ray generating device comprising an electron scattering element is presented. According to the present invention, an X-ray generating device is provided, comprising an electron emitting element 16, an electron collecting element 20 and an electron scattering element 42. A primary electron beam 17 a is arrangeable between the electron emitting element 16 and the electron collecting element 20. The electron emitting element 16 and the electron collecting element 20 are operatively coupled for generating X-radiation 14.

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Номер записи: 6
27-12-2012 дата публикации

X-ray tube

Номер: US20120328081A1
Автор: Gerhard Fenkart
Принадлежит: Microtec SRL

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 ).

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Номер записи: 7
27-12-2012 дата публикации

X-ray mirror, method of producing the mirror, and x-ray apparatus

Номер: US20120328082A1
Автор: Atsushi Komoto, Hirokatsu Miyata, Kohei Okamoto, Wataru Kubo
Принадлежит: Canon Inc

Provided is an X-ray mirror, a method of producing the X-rat mirror, and an X-ray apparatus. The X-ray mirror comprises: a substrate; and an X-ray reflecting structure formed of multiple regions present on the substrate, in which the X-ray reflecting structure comprises a mesostructured film that has the multiple regions having different structural periods in a normal direction of the substrate. Thus, there can be reduced the absorption loss of an X-ray of the mirror that reflects X-rays having different energies.

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Номер записи: 8
07-02-2013 дата публикации

Radiation generating apparatus and radiation imaging apparatus

Номер: US20130034207A1
Автор: Kazuyuki Ueda, Koji Yamazaki, Miki Tamura, Shuji Aoki, Yoshihiro Yanagisawa
Принадлежит: Canon Inc

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.

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Номер записи: 9
26-09-2013 дата публикации

X-ray generating apparatus and control method thereof

Номер: US20130251107A1
Автор: Ichiro Nomura, Kazuyuki Ueda, Osamu Tsujii, Takao Ogura
Принадлежит: Canon Inc

An X-ray generating apparatus controls driving of an X-ray tube. The X-ray tube includes an electron source emitting electrons due to application of a voltage, a transmission-type target generating an X-ray due to collision of electrons emitted from the electron source, and a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and blocking an X-ray that scatters toward the electron source. When generating the X-ray, application of a voltage to the transmission-type target is started, and emission of electrons from the electron source is caused after passage of a predetermined period indicating a time period from starting voltage application until the transmission-type target reaches a predetermined voltage. When stopping X-ray generation, application of the voltage to the transmission-type target is stopped after stopping the emission of electrons from the electron source.

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Номер записи: 10
02-01-2020 дата публикации

COMPUTER TOMOGRAPH

Номер: US20200000423A1
Автор: MOHAMMADI ZAHRA
Принадлежит:

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 ...

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Номер записи: 11
07-01-2016 дата публикации

APPARATUS FOR THE GENERATION OF LOW-ENERGY X-RAYS

Номер: US20160000949A1
Автор: MITKO Sergey, UDALOV Yuri
Принадлежит:

An X-ray source for producing soft X-rays, the X-ray source comprising: a cathode having an electron-emitting structure supported by a support structure, the electron-emitting structure being at least partially transparent to X-rays within a region bounded by the support structure; an anode having an X-ray emitting surface parallel to the electron-emitting structure of the cathode; and an electrically insulating spacer arranged between the anode and the cathode; wherein the electron-emitting structure of the cathode and the X-ray emitting surface of the anode are arranged such that, in use, the electron-emitting structure is operable to bombard the anode with electrons, causing X-rays to be emitted from the X-ray emitting surface and to pass through the cathode; and wherein the insulating spacer is arranged between the anode and the support structure of the cathode and projects beyond the support structure, across part of the anode, into the said region. 1. An X-ray source for producing soft X-rays , the X-ray source comprising:a cathode having an electron-emitting structure supported by a support structure, the electron-emitting structure being at least partially transparent to X-rays within a region bounded by the support structure;an anode having an X-ray emitting surface parallel to the electron-emitting structure of the cathode; andan electrically insulating spacer arranged between the anode and the cathode;wherein the electron-emitting structure of the cathode and the X-ray emitting surface of the anode are arranged such that, in use, the electron-emitting structure is operable to bombard the anode with electrons, causing X-rays to be emitted from the X-ray emitting surface and to pass through the cathode; andwherein the insulating spacer is arranged between the anode and the support structure of the cathode and projects beyond the support structure, across part of the anode, into the said region.251-. (canceled)52. A method of sterilizing an article , the ...

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Номер записи: 12
06-01-2022 дата публикации

X-RAY GENERATING APPARATUS FOR PHASE IMAGING

Номер: US20220003689A1
Автор: Momose Atsushi, Nakano Asao
Принадлежит:

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

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Номер записи: 13
04-01-2018 дата публикации

MULTILAYER X-RAY SOURCE TARGET

Номер: US20180005794A1
Автор: Dalakos George Theodore, LIANG Yong, Raber Thomas Robert, Robinson Vance Scott
Принадлежит:

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 ...

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Номер записи: 14
14-01-2016 дата публикации

X-RAY DIAGNOSTIC APPARATUS

Номер: US20160007949A1
Автор: Kobayashi Yoshimasa, OHASHI Shumpei
Принадлежит:

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

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Номер записи: 15
27-01-2022 дата публикации

FIELD EMISSION-TYPE TOMOSYNTHESIS SYSTEM, EMITTER FOR FIELD EMISSION-TYPE TOMOSYNTHESIS SYSTEM, AND METHOD OF MANUFACTURING EMITTER

Номер: US20220028644A1
Автор: AHN Jeung Sun, Jung Jae Ik, KIM Woo Seob, KONG Moonkyoo, LIM Jong Min, PARK Jun Young, RYU Jehwang, YEO Seung Jun
Принадлежит: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Disclosed is a field emission-type tomosynthesis system including a vacuum body having a space therein; a plurality of sources provided inside the body, wherein each of the sources emits a plurality of electrons; and a plurality of anodes disposed inside the body to face the sources and responsible for emitting a plurality of X-rays, wherein each of the anodes faces a corresponding source among the sources, and the electrons collide with each of the anodes to generate X-rays, wherein the X-ray emission angle of each of the anodes is capable of being independently adjusted so as to focus the X-rays emitted toward an object located outside the body. With this configuration, a plurality of X-rays is focused on an object and is emitted to the object to obtain information, and the information is synthesized, thereby improving the reliability of information about the object. 1. A field emission-type tomosynthesis system , comprising:a vacuum body having a space therein;a plurality of sources provided inside the body, wherein each of the sources generates and emits a plurality of electrons; andanodes arranged to face the sources inside the body, wherein the electrons collide with each of the anodes to generate a plurality of X-rays,wherein an X-ray emission angle of each of the anodes is capable of being independently adjusted so as to focus the X-rays emitted toward an object located outside the body.2. The X-ray source system according to claim 1 , wherein each of the sources comprises carbon nanotubes (CNTs) and generates the electrons claim 1 , andinformation of the object photographed by the X-rays is capable of being synthesized.3. The field emission-type tomosynthesis system according to claim 1 , wherein the sources are provided in plural and are arranged in a row so as to be placed side by side with each other claim 1 , andthe anodes are disposed to correspond to the sources and are arranged in a row so as to be placed side by side with each other.4. The field ...

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Номер записи: 16
10-01-2019 дата публикации

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

Номер: US20190011379A1
Автор: Alan Francis Lyon, Benjamin Donald STRIPE, Janos KIRZ, Srivatsan Seshadri, Sylvia Jia Yun LEWIS, Wenbing Yun
Принадлежит: Sigray Inc

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

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Номер записи: 17
09-01-2020 дата публикации

Liquid Crystal Polymer for Mounting X-ray Window

Номер: US20200013578A1
Автор: Jared SOMMER, Jonathan Abbott
Принадлежит: Moxtek Inc

An x-ray window can include an adhesive layer sandwiched between and providing a hermetic seal between a thin film and a housing. The adhesive layer can include liquid crystal polymer. The liquid crystal polymer can be opaque, gas-tight, made of low atomic number elements, able to withstand high temperature, low outgassing, low leakage, able to relieve stress in the x-ray window thin film, capable of bonding to many different materials, or combinations thereof.

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Номер записи: 18
21-01-2016 дата публикации

COOLING ARRANGEMENT FOR X-RAY GENERATOR

Номер: US20160020059A1
Автор: HAFERL Stephan, Price Matt, SCHMID Iris
Принадлежит: COMET HOLDING AG

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

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Номер записи: 19
18-01-2018 дата публикации

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

Номер: US20180019092A1
Автор: HADLAND Roger
Принадлежит:

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 ...

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Номер записи: 20
18-01-2018 дата публикации

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

Номер: US20180019093A1
Автор: HADLAND Roger
Принадлежит:

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 ...

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Номер записи: 21
22-01-2015 дата публикации

ROTATING X-RAY ANODE WITH AN AT LEAST PARTLY RADIALLY ALIGNED GROUND STRUCTURE

Номер: US20150023473A1
Автор: Glatz Wolfgang, Müller Thomas, Rödhammer Peter, Schatte Jürgen
Принадлежит:

A rotating x-ray anode has an annular focal track. The surface of the focal track has a directed ground structure. Over the circumference of the annular focal track and over the radial extent of the focal track, the alignment of the ground structure is inclined relative to a tangential reference direction in the respective surface portion in each case by an angle that lies in the range from 15°, including, up to and including 90°. A corresponding method for producing a rotating x-ray anode is described. 112-. (canceled)13. A rotating x-ray anode , comprising:an annular focal track having a surface formed with a directed ground structure;an alignment of the directed ground structure, over a circumference of said focal track and over a radial extent of said focal track, being inclined in relation to a tangential reference direction at a respective surface portion by an angle in the range from and including 15° up to and including 90°.14. The rotating x-ray anode according to claim 13 , wherein claim 13 , over the circumference of said annular focal track and over the radial extent of said focal track claim 13 , the alignment of the ground structure is inclined in relation to the tangential reference direction in the respective surface portion in each case by an angle in the range from and including 35° up to and including 70°.15. The rotating x-ray anode according to claim 13 , wherein the directed ground structure in each case has a substantially straight course.16. The rotating x-ray anode according to claim 13 , wherein claim 13 , along a radial direction from inside to outside claim 13 , the angle between the alignment of the ground structure and the tangential reference direction in the respective surface portion decreases over the radial extent of said focal track.17. The rotating x-ray anode according to claim 13 , wherein claim 13 , in a region of the ground structure claim 13 , a mean surface roughness Ra lies in a range from and including 0.05 μm up to and ...

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Номер записи: 22
21-01-2021 дата публикации

X-RAY SOURCE WITH ROTATING ANODE AT ATMOSPHERIC PRESSURE

Номер: US20210020398A1
Автор: Hansen William Henry, Kirz Janos, Yun Wenbing
Принадлежит:

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 , ...

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Номер записи: 23
21-01-2021 дата публикации

Combined Machine Head and Ray Imaging Device

Номер: US20210022232A1
Автор: He Jie, Huang Qiang, Wang Weizhong
Принадлежит:

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 ...

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Номер записи: 24
25-01-2018 дата публикации

X-RAY EMITTER

Номер: US20180025883A1
Автор: ISSBRUECKER CARRY, Standar Robert
Принадлежит:

An X-ray emitter includes an emitter housing in which an X-ray tube is disposed and held in the emitter housing by a fixing facility. The fixing facility includes a fixed bearing disposed on the cathode side and a floating bearing disposed on the anode side. At least the floating bearing has at least one damping element. In the X-ray emitter, the X-ray tube is aligned inside the emitter housing and fixed in a respectively low-vibration or vibration-damped manner, resulting in a more stable focus position relative to a beam exit and also a correspondingly improved image quality. 1. An X-ray emitter , comprising:an emitter housing;an X-ray tube disposed in said emitter housing;a fixing facility holding said X-ray tube in said emitter housing;said fixing facility including a fixed bearing disposed on a cathode side and a floating bearing disposed on an anode side; andat least said floating bearing having at least one damping element.2. The X-ray emitter according to claim 1 , wherein said fixed bearing has at least one damping element.3. The X-ray emitter according to claim 1 , wherein said X-ray tube is an all-metal tube.4. The X-ray emitter according to claim 1 , wherein said X-ray tube is a metal center section tube.5. The X-ray emitter according to claim 1 , wherein said X-ray tube is a metal ceramic tube.6. The X-ray emitter according to claim 1 , wherein said emitter housing is an X-ray emitter housing.7. The X-ray emitter according to claim 1 , wherein said emitter housing is a single-tank housing.8. The X-ray emitter according to claim 1 , wherein said emitter housing is a duo-block.9. The X-ray emitter according to claim 1 , wherein said fixed bearing includes a tube flange and a fixing flange claim 1 , said tube flange is fixed rigidly to said X-ray tube and said fixing flange is part of said emitter housing.10. The X-ray emitter according to claim 9 , wherein said tube flange encloses an outer periphery of a beam exit window disposed in said X-ray tube. This ...

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Номер записи: 25
28-01-2016 дата публикации

COMPACT X-RAY GENERATION DEVICE

Номер: US20160029469A1
Автор: Camara Carlos G., Gamlieli Zachary J., Lucas Benjamin A.
Принадлежит:

An x-ray transmitter, which may be compact, may be in the form of a housing with an x-ray transparent window sputtered with a metal on one wall, and tribocharging electron source on another wall. 1. An x-ray emission device , comprising:a housing configured to maintain a low fluid pressure environment, the housing having a a first wall with a window substantially transparent to x-rays and a second wall having a portion comprising an exterior surface comprising an electrically insulating material;an electron target within the housing;an electrically chargeable material within the housing; anda contact material for frictionally contacting the electrically insulating material, the contact material comprising a material such that frictional contact with the electrically insulating material generates a charge imbalance.2. The x-ray emission device of claim 1 , wherein the portion of the second wall comprising the electrically insulating material further comprises a metal interior to and in contact with the electrically insulating material claim 1 , the metal electrically insulated from other portions of the housing.3. The x-ray emission device of claim 1 , wherein the electron target is metal on an interior surface of the window substantially transparent to x-rays.4. The x-ray emission device of claim 3 , wherein the metal is gold sputtered onto to the window substantially transparent to x-rays.510.-. (canceled)11. The x-ray emission device of claim 1 , wherein the electrically insulating material comprises a dielectric.12. (canceled)13. The x-ray emission device of claim 1 , wherein the electrically insulating material comprises a membrane.14. The x-ray emission device of wherein the electrically chargeable material is a mesh.1518.-. (canceled)19. The x-ray emission device of claim 1 , wherein the electron target comprises a metal.20. The x-ray emission device of claim 1 , wherein the electron target comprises a ceramic compound.21. The x-ray emission device of claim 1 ...

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Номер записи: 26
29-01-2015 дата публикации

Multi-source radiation generator and radiographic imaging system

Номер: US20150030119A1
Автор: Kazuyuki Ueda, Miki Tamura
Принадлежит: Canon Inc

A multi-source radiation generator in which plural radiation sources are arranged in series includes a control unit that controls a dose of radiation emitted from each of the radiation sources depending on positions of the radiation sources, and reduces variation in a radiation dose resulting from differences in positions of the radiation sources by changing an irradiation time, an anodic current value of each of the radiation sources depending on a distance from each of the radiation sources to a subject.

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Номер записи: 27
28-01-2021 дата публикации

RADIATION ANODE TARGET SYSTEMS AND METHODS

Номер: US20210027973A1
Автор: Clayton James, STAR-LACK Josh
Принадлежит:

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 ...

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Номер записи: 28
23-01-2020 дата публикации

DATA MONITORING AND MANAGEMENT DEVICE AND EVENT DATA MONITORING METHOD

Номер: US20200029412A9
Автор: Honsawa Kunio, Izawa Hidehito, Kawachi Reiko, NOMOTO Hiroyuki
Принадлежит:

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 ...

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Номер записи: 29
31-01-2019 дата публикации

Monochromatic x-ray systems and methods

Номер: US20190030362A1
Автор: Eric H. Silver
Принадлежит: Imagine Scientific Inc

According to some aspects, a carrier configured for use with a broadband x-ray source comprising an electron source and a primary target arranged to receive electrons from the electron source to produce broadband x-ray radiation in response to electrons impinging on the primary target is provided. The carrier comprising a housing configured to be removeably coupled to the broadband x-ray source and configured to accommodate a secondary target capable of producing monochromatic x-ray radiation in response to incident broadband x-ray radiation, the housing comprising a transmissive portion configured to allow broadband x-ray radiation to be transmitted to the secondary target when present, and a blocking portion configured to absorb broadband x-ray radiation.

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Номер записи: 30
02-02-2017 дата публикации

X-RAY GENERATING APPARATUS AND RADIOGRAPHY SYSTEM

Номер: US20170032923A1
Автор: Aoki Shuji, Tsunoda Koichi, Ueda Kazuyuki, Yamazaki Koji
Принадлежит:

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

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Номер записи: 31
01-02-2018 дата публикации

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

Номер: US20180033579A1
Автор: HADLAND Roger
Принадлежит:

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 ...

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Номер записи: 32
01-02-2018 дата публикации

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

Номер: US20180033580A1
Автор: HADLAND Roger
Принадлежит:

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 ...

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Номер записи: 33
01-02-2018 дата публикации

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

Номер: US20180033581A1
Автор: Roger Hadland
Принадлежит: NIKON METROLOGY NV

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.

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Номер записи: 34
01-02-2018 дата публикации

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

Номер: US20180033582A1
Автор: HADLAND Roger
Принадлежит:

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 ...

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Номер записи: 35
30-01-2020 дата публикации

RADIATION ANODE TARGET SYSTEMS AND METHODS

Номер: US20200035438A1
Автор: Clayton James, STAR-LACK Josh
Принадлежит:

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 ...

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Номер записи: 36
30-01-2020 дата публикации

HIGH BRIGHTNESS X-RAY REFLECTION SOURCE

Номер: US20200035440A1
Автор: Hansen William Henry, Kirz Janos, Lewis Sylvia Jia Yun, Yun Wenbing
Принадлежит:

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 ...

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Номер записи: 37
12-02-2015 дата публикации

COMPACT SELF-RESONANT X-RAY SOURCE

Номер: US20150043719A1
Автор: Dondokovich Dugar-Zhabon Valeriy, Orozco Ospino Eduardo Alberto
Принадлежит: UNIVERSIDAD INDUSTRIAL DE SANTANDER

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 ...

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Номер записи: 38
18-02-2021 дата публикации

METHODS OF SUPPORTING A GRAPHENE SHEET DISPOSED ON A FRAME SUPPORT

Номер: US20210047740A1
Автор: Glaeser Robert M., Han Bong-Gyoon
Принадлежит: The Regents of the University of California

This disclosure provides systems, methods, and apparatus related to graphene. In one aspect, a method includes submerging a frame support in an etching solution that is contained in a container. A growth substrate, a graphene sheet disposed on the growth substrate, and a primary support disposed on the graphene sheet is placed on a surface of the etching solution. The growth substrate is dissolved in the etching solution to leave the graphene sheet and the primary support floating on a surface of the etching solution. The etching solution in the container is replaced with a washing solution. The washing solution is removed from the container so that the graphene sheet becomes disposed on the frame support. 1. A method comprising:(a) submerging a frame support in an etching solution that is contained in a container;(b) placing a growth substrate, a graphene sheet disposed on the growth substrate, and a primary support disposed on the graphene sheet on a surface of the etching solution;(c) dissolving the growth substrate in the etching solution to leave the graphene sheet and the primary support floating on a surface of the etching solution;(d) replacing the etching solution in the container with a washing solution; and(e) removing the washing solution from the container so that the graphene sheet becomes disposed on the frame support.2. The method of claim 1 , wherein the frame support comprises an electron microscopy grid.3. The method of claim 1 , wherein the frame support comprises an electron microscopy grid claim 1 , and wherein no other materials are disposed on the electron microscopy grid.4. The method of claim 1 , wherein the growth substrate comprises a copper foil.5. The method of claim 1 , wherein the graphene sheet comprises a single layer of graphene.6. The method of claim 1 , wherein the graphene sheet comprises a multiple layers of graphene.7. The method of claim 1 , wherein the primary support comprises a holey carbon film.8. The method of claim 1 , ...

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Номер записи: 39
24-02-2022 дата публикации

X-Ray Source Voltage Shield

Номер: US20220059308A1
Автор: Hoffman David S., Jones Vincent F., Miller Eric
Принадлежит:

A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply. 1. A shielded x-ray tube 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 longitudinal axis of the x-ray tube extending along a center of the electron beam and between the cathode and the anode;an x-ray tube shield encircling the x-ray tube, being electrically insulative, and spaced apart from the x-ray tube by an annular gap, including two open ends located opposite of each other;a longitudinal axis of the x-ray tube shield extends from a center of one open end to a center of the opposite open end;the longitudinal axis of the x-ray tube is parallel to the longitudinal axis of the x-ray tube shield;x-ray tube insulation separating the x-ray tube shield from the x-ray tube, the x-ray tube insulation comprising a solid, electrically-insulative material with a different material composition than a material composition of the x-ray tube shield;an outer insulation wrapping at least partially around the x-ray tube shield and being a solid, electrically-insulative material with a different material composition than a material composition of the x-ray tube shield; andthe x-ray tube shield sandwiched between the x-ray tube insulation and the outer insulation.2. The shielded x-ray tube of claim 1 , wherein the x-ray tube shield is embedded in the x-ray tube insulation and the outer insulation and electrically insulated from any power supply by the x-ray tube insulation and by the outer insulation.3. The shielded x-ray ...

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Номер записи: 40
18-02-2016 дата публикации

METHOD AND SYSTEMS FOR TEXTURING LIQUID BEARING SURFACES IN X-RAY TUBES

Номер: US20160047415A1
Автор: Danyluk Michael J., Dayton Kenwood P., Hunt Ian Strider, Poquette Ben David, Tiwari Santosh Kumar
Принадлежит:

Various methods and systems are provided for providing coatings and textures to surfaces of a bearing assembly in an x-ray system to control the wettability of the surfaces when components of the bearing assembly rotate during operation of the x-ray system. A lubricant is disposed in a gap formed between a shaft and a sleeve of the bearing assembly such that textured and coated surfaces of the shaft and sleeve alter wetting properties between the lubricant and surfaces. The coatings and textures can be wetting or anti-wetting to further enhance control over the behavior of the lubricant. 1. A bearing assembly , comprising:a sleeve with an opening formed therein;a shaft positioned within the opening of the sleeve with a gap formed between an inner surface of the sleeve and an outer surface of the shaft;a lubricant disposed in the gap; anda texture formed on at least one of the outer surface of the shaft and the inner surface of the sleeve, the texturing altering a geometry and wettability of the inner and outer surfaces.2. The bearing assembly of claim 1 , further comprising a coating formed on at least one of the outer surface of the shaft and the inner surface of the sleeve claim 1 , the coating altering the wettability of the inner and outer surfaces without altering the geometry of the inner and outer surfaces.3. The bearing assembly of claim 2 , wherein the texture is positioned on a first portion of the inner and outer surfaces and the coating is positioned on a second portion of the inner and outer surfaces claim 2 , the first and second portions located on different parts of the shaft and sleeve.4. The bearing assembly of claim 2 , wherein the texture and coating are positioned on a first portion of the inner and outer surfaces claim 2 , and the texture is cut into at least part of the coating.5. The bearing assembly of claim 1 , wherein the texture is only formed on ends of the shaft and/or sleeve.6. The bearing assembly of claim 1 , wherein the texture ...

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Номер записи: 41
07-02-2019 дата публикации

High-Power X-Ray Sources and Methods of Operation

Номер: US20190043686A1
Автор: Bendahan Joseph, Wiggers Robert Thomas
Принадлежит:

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

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Номер записи: 42
19-02-2015 дата публикации

Liquid Metal Bearing

Номер: US20150049861A1
Автор: Dittrich Ronald, Fuchs Manfred
Принадлежит:

A liquid metal bearing includes at least one first bearing part and at least one second bearing part that have a non-positive fit connection to one another. At least one first ductile sealing layer is disposed at least partly between at least a first bearing part of the at least one bearing and a second bearing part of the at least one second bearing part. 1. A liquid metal bearing comprising:at least one first bearing part;at least one second bearing part, wherein the at least one first bearing part and the at least one second bearing part have a non-positive fit connection to one another; andat least one first ductile sealing layer that is disposed at least partly between a first bearing part of the at least one first bearing part and a second bearing part of the at least one second bearing part.2. The liquid metal bearing of claim 1 , further comprising a second ductile sealing layer that is disposed between the first bearing part and the second bearing part.3. The liquid metal bearing of claim 2 , further comprising an intermediate ring that is disposed between the first bearing part and the second bearing part claim 2 , wherein the at least one first ductile sealing layer is disposed at least partly between the first bearing part and the intermediate ring claim 2 , and the second ductile sealing layer is disposed at least partly between the intermediate ring and the second bearing part.4. The liquid metal bearing of claim 1 , wherein the at least one first ductile sealing layer is made of lead claim 1 , copper claim 1 , indium claim 1 , tin claim 1 , aluminum claim 1 , gold claim 1 , silver claim 1 , graphite claim 1 , alkali halides claim 1 , or a combination thereof.5. The liquid metal bearing of claim 2 , wherein at least one ductile sealing layer of the at least one first ductile sealing layer and the second ductile sealing layer is configured as a film.6. The liquid metal bearing of claim 2 , wherein at least one ductile sealing layer of the at least one ...

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Номер записи: 43
07-02-2019 дата публикации

DATA MONITORING AND MANAGEMENT DEVICE AND EVENT DATA MONITORING METHOD

Номер: US20190045611A1
Автор: Honsawa Kunio, Izawa Hidehito, Kawachi Reiko, NOMOTO Hiroyuki
Принадлежит:

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 ...

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Номер записи: 44
08-05-2014 дата публикации

X-ray emitting target and x-ray emitting device

Номер: US20140126701A1
Автор: Nobuhiro Ito, Takao Ogura, Yasue Sato
Принадлежит: Canon Inc

An X-ray emitting target including a diamond substrate, a first layer disposed on the diamond substrate and including a first metal, and a second layer disposed on the first layer and including a second metal whose atomic number is 42 or more and which has a thermal conductivity higher than that of the first metal. The layer thickness of the first layer is greater than or equal to 0.1 nm and smaller than or equal to 100 nm. The target is prevented from overheating, so that output variation due to rising temperature is suppressed. Thus it is possible to emit stable and high output X-rays.

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Номер записи: 45
08-05-2014 дата публикации

Systems and methods for monitoring and controlling an electron beam

Номер: US20140126704A1
Автор: Carey Shawn Rogers, John Scott Price, Mark Alan Frontera, Peter Andras Zavodsky, Sergio Lemaitre, Yun Zou
Принадлежит: General Electric Co

An X-ray tube assembly includes an electron beam transport tube, a beam tube protection assembly, and a control module. The electron beam transport tube includes an opening configured for passage of an electron beam, and includes an inner surface bounding the opening along a length of the electron beam transport tube. The beam tube protection assembly includes a plurality of beam protection electrode segments disposed within the opening of the electron beam transport tube and configured to protect the inner surface of the electron beam transport tube from contact with the electron beam. The control module is configured to determine a direction of the electron beam responsive to information received from the beam tube protection assembly.

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Номер записи: 46
03-03-2022 дата публикации

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

Номер: US20220068585A1
Автор: Buresh Steve, Cross Andrew Thomas, JONES Marshall Gordon, Lemaitre Sergio, Lopez Fulton Jose, Michael Joseph Darryl, Neculaes Vasile Bogdan, Price John Scott, Rogers Carey, Wagner David, Wiedmann Uwe
Принадлежит:

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

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Номер записи: 47
03-03-2022 дата публикации

COMPONENT OR ELECTRON CAPTURE SLEEVE FOR AN X-RAY TUBE AND X-RAY TUBE HAVING SUCH A DEVICE

Номер: US20220068586A1
Автор: Schu André
Принадлежит:

A component part in a vacuum area of an X-ray tube with an opening through which an electron beam is guided. The component part includes a base body made of a first material, wherein the first material is a metal. Arranged on a surface forming the opening is a second material having an atomic number which is smaller than an atomic number of the first material. A target support is attached to an end of the component part. The target support supports a target which is aligned with a lens diaphragm formed at the end of the component part. The target support has a base body made of a first material which is a metal, and a second material formed on a surface of the base body that is selectively exposed to the electron beam and which extends between the target and the lens diaphragm.

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Номер записи: 48
25-02-2016 дата публикации

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

Номер: US20160056008A1
Автор: Mackie Thomas R., Seaton Jonathon R., Walker Brandon J.
Принадлежит:

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 ...

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Номер записи: 49
25-02-2021 дата публикации

ENHANCED THERMAL TRANSFER NOZZLE AND SYSTEM

Номер: US20210057181A1
Автор: Boutte Ronald Wayne, Greenland Kasey Otho, Lewis Patrick Kevin
Принадлежит: Varex Imaging Corporation

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 ...

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Номер записи: 50
22-02-2018 дата публикации

ANODE STACK

Номер: US20180053623A1
Автор: Alivov Yahya, Chidambaram Mahendran, Fowler Charles L., Roger Joseph
Принадлежит:

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 ...

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Номер записи: 51
23-02-2017 дата публикации

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

Номер: US20170053772A1
Автор: Mackie Thomas R., Seaton Jonathon R., Walker Brandon J.
Принадлежит:

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 ...

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Номер записи: 52
20-02-2020 дата публикации

Ultra high vacuum laser welder system

Номер: US20200055150A1
Автор: Farzad Sadeghi Tohidi
Принадлежит: Medical Imaging Solutions Usa LLC

Herein disclosed in a vacuum laser welding system which includes a chamber in which to generate a vacuum, a roughing pump and turbo pump for generating an ultra-high vacuum environment, temperature and pressure gauges to monitor the levels inside of the system, a cooling fan to reduce the temperature outside of the system, a laser viewport in order for the laser to penetrate without any deflection or leakage, a jig and fixture to mount the X-ray Tube insert inside of the system, and relief valves to release the pressures inside of the system.

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Номер записи: 53
05-03-2015 дата публикации

X-RAY RADIATION SOURCE

Номер: US20150063548A1
Автор: FUJITA Toru, Kosugi Norimasa, Nakamura Tatsuya, OKADA Tomoyuki, Okumura Naoki, UJIMA Akiomi
Принадлежит: HAMAMATSU PHOTONICS K.K.

In an X-ray radiation source, a lid part is fastened to a main part with screws, so that an X-ray tube is secured to a housing while being pressed against an inner surface of the wall part a by a first circuit board. The X-ray tube can be secured stably within the housing by thus being held between the first circuit board and the wall part. The X-ray radiation source uses the first circuit board incorporated in the housing itself for pressing the X-ray tube. This makes it unnecessary to provide new members for pressing the X-ray tube and can prevent the device structure from becoming complicated. 1. An X-ray radiation source comprising:an X-ray tube for outputting an X-ray from an output window;a first circuit board for mounting the X-ray tube; anda housing containing the X-ray tube and first circuit board and having a wall part formed with an X-ray emission window for emitting to the outside the X-ray outputted from the X-ray tube;wherein the X-ray tube is secured to the housing while being pressed against an inner surface of the wall part by the first circuit board.2. An X-ray radiation source according to claim 1 , wherein a conductive buffer member is arranged between the X-ray tube and the inner surface of the wall part so as to come into contact with at least a part of the output window.3. An X-ray radiation source according to claim 1 , wherein the housing has a main part having the wall part and a lid part for securing thereto the X-ray tube and first circuit board;wherein the lid part is fastened to the main part by a fastening member so as to press the X-ray tube against the inner surface of the wall part.4. An X-ray radiation source according to claim 3 , wherein the X-ray tube and first circuit board are supported by a spacer member erected on the lid part.5. An X-ray radiation source according to claim 4 , further comprising a high voltage generation module for raising a voltage supplied to the first circuit board and a second circuit board for mounting ...

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Номер записи: 54
21-02-2019 дата публикации

ANALYTICAL X-RAY TUBE WITH HIGH THERMAL PERFORMANCE

Номер: US20190057832A1
Автор: DURST Roger D., MICHAELSEN Carsten, Radcliffe Paul, SCHMIDT-MAY Jenss
Принадлежит:

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 ...

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Номер записи: 55
03-03-2016 дата публикации

STRUCTURED TARGETS FOR X-RAY GENERATION

Номер: US20160064175A1
Автор: Kirz Janos, Lewis Sylvia Jia Yun, Yun Wenbing
Принадлежит: Sigray, Inc.

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 ...

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Номер записи: 56
03-03-2016 дата публикации

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

Номер: US20160064176A1
Автор: Xiang Xiaodong
Принадлежит:

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 ...

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Номер записи: 57
03-03-2016 дата публикации

X-RAY SOURCE AND IMAGING SYSTEM

Номер: US20160064177A1
Автор: GOSSMANN Svetlana, Heid Oliver, Hughes Timothy
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An evacuable outer housing having at least one X-ray-permeable beam exit window, an electron source, an anode and a collector for catching electrons which penetrate the anode are included as an X-ray source. The collector is part of an electrical current circuit for applying a negative potential to the anode, and the radiation window is disposed such that X-ray radiation which exits from the anode at an angle of 130 degrees to 230 degrees to the electron beam direction can be coupled out through the radiation window. An imaging system includes such an X-ray, an arrangement to accommodate an object to be examined, and an X-ray detector. 115-. (canceled)16. An X-ray source , comprising:an anode generating X-ray radiation;an electron source emitting electrons along an electron beam direction;an evacuable outer housing having at least one beam exit window, transparent to X-rays, arranged such that X-radiation emerging from the anode at least in a subrange of an angle range from 130 degrees to 230 degrees with respect to the electron beam direction is output through the beam exit window; andan electrical circuit, including a collector collecting electrons passing through the anode, applying a negative potential to the collector in relation to a potential at the anode.17. The X-ray source as claimed in claim 16 , wherein the collector is thicker along the electron beam direction than an average penetration depth of the electrons in a material of the collector for the electrons having kinetic energy of 150 keV.18. The X-ray source as claimed in claim 17 , wherein the material of the collector is at least one of stainless steel and copper and has a thickness of at least one millimeter along the electron beam direction.19. The X-ray source as claimed in claim 16 , wherein the collector has a depression in the electron beam direction.2021. The X-ray source as claimed in claim 16 , wherein the depression has at least one of a trapezoidal shape and a depth of at least 3 ...

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Номер записи: 58
01-03-2018 дата публикации

SYSTEM AND METHOD FOR REDUCING RELATIVE BEARING SHAFT DEFLECTION IN AN X-RAY TUBE

Номер: US20180061611A1
Автор: Delgado Marquez Adolfo, Hebert Michael Scott, Hunt Ian Strider, Kruse Kevin Shane, McCabe John James, Ryan Alexander Thomas, Triscari Andrew Thomas
Принадлежит:

An X-ray tube is provided. The X-ray tube includes a bearing configured to couple to an anode. The bearing includes a stationary member, a rotary member configured to rotate with respect to the stationary member during operation of the X-ray tube, and a support feature configured to minimize bending moment along a surface of the stationary member to reduce deflection of the stationary member relative to the rotary member due to radial loads during operation of the X-ray tube. 1. A bearing for an X-ray tube , comprising:a stationary member;a rotary member configured to rotate with respect to the stationary member during operation of an X-ray tube; anda support feature configured to minimize bending moment along a surface of the stationary member to reduce deflection of the stationary member relative to the rotary member due to radial loads during operation of an X-ray tube.2. The bearing of claim 1 , wherein the support feature comprises a first recess formed within a first end of the stationary member claim 1 , and the first recess extends in both a circumferential direction and an axial direction relative to a longitudinal axis of the stationary member.3. The bearing of claim 2 , wherein the support feature comprises a second recess formed within a second end of the stationary member claim 2 , and the second recess extends in both the circumferential direction and the axial direction relative to the longitudinal axis of the stationary member.4. The bearing of claim 1 , wherein the support feature comprises at least one cavity disposed within stationary member claim 1 , and the at least one cavity extends in both a circumferential direction and an axial direction relative to a longitudinal axis of the stationary member.5. The bearing of claim 1 , wherein the support feature comprises a shaft disposed within the stationary member along a longitudinal length of the stationary member claim 1 , wherein the shaft is configured to absorb relative deflection due to the ...

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Номер записи: 59
04-03-2021 дата публикации

CERAMIC SHIELDING APPARATUS

Номер: US20210066018A1
Автор: LEE Han Sung
Принадлежит:

Disclosed is a ceramic shielding apparatus including at least one shield made of a ceramic material and provided inside or outside an X-ray tube to shield radiation; and supports configured to support the shield. According to such a configuration, disadvantages of conventional shielding materials such as lead can be addressed, so that a shield apparatus having excellent shielding properties while being harmless to the human body can be provided. 1. A ceramic shielding apparatus , comprising:at least one shield made of a ceramic material and provided inside or outside an X-ray tube to shield radiation; andsupports configured to support the shield.2. The ceramic shielding apparatus according to claim 1 , wherein the X-ray tube is provided inside a shielding room to isolate from the outside claim 1 , andthe shield is in close contact with the shielding room, in a state of being supported by the supports, or is provided inside the shielding room to surround the X-ray tube.3. The ceramic shielding apparatus according to claim 2 , wherein the shield comprises:a plurality of shielding blocks made of the ceramic material; andreinforcing members configured to support a mutually connected state of the plurality of shielding blocks to reinforce shielding ability.4. The ceramic shielding apparatus according to claim 3 , wherein the supports are provided as a pair of supports to respectively support a front surface of the shield facing the X-ray tube and a rear surface opposite to the front surface of the shield claim 3 , and are made of a plastic material.5. The ceramic shielding apparatus according to claim 3 , wherein each of the plurality of shielding blocks comprises:a block body having a square block shape;at least one connection protrusion protruding from a side of the block body; andat least one connection groove, into which connection protrusions of adjacent block bodies inserted, grooved into another side of the block body.6. The ceramic shielding apparatus according ...

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Номер записи: 60
28-02-2019 дата публикации

Magnetic Support For Journal Bearing Operation At Low And Zero Speeds

Номер: US20190066964A1
Автор: Emaci Edward, Gorrilla Michael, Hunt Ian Strider, Ryan Alexander
Принадлежит:

A structure and method of operation of a journal bearing is disclosed that minimizes contact of the shaft with the sleeve during start up and slow down of the rotation of the shaft relative to the sleeve, or vice versa. The bearing assembly includes a gravitational load reduction mechanism with magnets disposed on the sleeve and on the shaft in alignment with one another. The magnet(s) on the shaft interacts with the magnet(s) disposed on the sleeve to provide a force against the pressure of the shaft towards the sleeve generated by gravity acting on the rotating component. The magnets enable centering of the rotating component within the stationary component during low rotation and non-rotation. This prevents rubbing of the rotating journal bearing component surfaces, e.g., sleeve, against the stationary journal bearing component, e.g., shaft, during assembly, ramp-up, and coast-down when the journal bearing fluid provides minimal or no bearing centering capability. 1. A gravitational load reducing mechanism for an x-ray tube bearing assembly , the load reducing mechanism comprising at least one magnet disposed on one of a rotating component of the bearing assembly or a stationary component of the bearing assembly , wherein the at least one magnet is configured to create a magnetic force in conjunction with another portion of the bearing assembly to reduce the gravitational load of the rotating component relative to the stationary component.3. The mechanism of claim 2 , wherein the first magnet is formed from a plurality of magnets disposed around a circumference of the rotating component.4. The mechanism of claim 2 , wherein the rotating component is a sleeve.5. The mechanism of claim 2 , wherein the second magnet is disposed on a shaft positioned within sleeve.6. The mechanism of claim 4 , wherein the second magnet is disposed on a support structure located adjacent the sleeve.7. The mechanism of claim 1 , wherein the at least one magnet is formed integrally with ...

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Номер записи: 61
28-02-2019 дата публикации

RADIATION EMISSION DEVICE

Номер: US20190066965A1
Автор: BAO Guangzhong, FANG Xiao, LI Dun, ZHAI Mingchun
Принадлежит: SHENZHEN UNITED IMAGING HEALTHCARE CO., LTD.

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

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Номер записи: 62
08-03-2018 дата публикации

CONTINUOUS CONTACT X-RAY SOURCE

Номер: US20180068822A1
Автор: Camara Carlos G., Cortes, Cuadra Daniel E., Gamlieli Zachary J., Jimenez Gilberto, JR. Pedro, Kamkar David M., Lucas Benjamin A., Narayan M. Vasish, Valentine Mark G.
Принадлежит:

An x-ray device utilizes a band of material to exchange charge through tribocharging within a chamber maintained at low fluid pressure. The charge is utilized to generate x-rays within the housing, which may pass through a window of the housing. Various contact rods may be used as part of the tribocharging process. 1. An x-ray device comprising:a housing configured for maintenance of a low fluid pressure environment in a chamber of the housing, the housing having a window, the housing being substantially opaque to x-rays other than the window, which is substantially transparent to x-rays;a driving roller;a motor for driving the driving roller;a contact rod at least partially within the chamber;a continuous band looped around the driving roller and in contact with the contact rod, the continuous band defining a loop with at least a portion of the contact rod within the loop, the continuous band and the contact material being comprised of materials such that varying contact between the continuous band and the contact material generates relative charge imbalance.24.-. (canceled)5. The x-ray device of claim 1 , wherein the surface of the contact rod is dimpled.6. The x-ray device of claim 1 , wherein the surface of the contact rod includes cavities.7. The x-ray device of claim 1 , wherein the surface of the contact rod is splined.8. The x-ray device of claim 1 , further comprising a conductive paste on at least a portion of the contact rod.9. (canceled)10. The x-ray device of claim 1 , further comprising a tensioner for the continuous band.11. The x-ray device of claim 1 , wherein the surface of the contact rod comprises Molybdenum.12. (canceled)13. The x-ray device of claim 1 , wherein the continuous band includes surface patterning.14. The x-ray device of claim 13 , wherein the surface patterning comprises dimples in the continuous band.15. The x-ray device of claim 13 , wherein the surface patterning includes holes in the continuous band.16. The x-ray device of claim ...

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Номер записи: 63
11-03-2021 дата публикации

RADIATION EMISSION DEVICE

Номер: US20210074504A1
Автор: BAO Guangzhong, FANG Xiao, LI Dun, ZHAI Mingchun
Принадлежит: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

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 ...

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Номер записи: 64
19-03-2015 дата публикации

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

Номер: US20150078531A1
Автор: IMAI Yoshifumi, ISHIHARA Tomonari
Принадлежит:

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

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Номер записи: 65
19-03-2015 дата публикации

Cooled Stationary Anode for an X-Ray Tube

Номер: US20150078533A1
Автор: Chan Ki
Принадлежит:

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

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Номер записи: 66
07-03-2019 дата публикации

X-RAY GENERATOR

Номер: US20190074155A1
Автор: Chaki Tomohiro, Kuribayashi Masaru, Yamakata Masaaki
Принадлежит: RIGAKU CORPORATION

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

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Номер записи: 67
24-03-2022 дата публикации

X-Ray Tube with Multi-Element Target

Номер: US20220093358A1
Автор: Miller Eric, Ossofsky Mike
Принадлежит:

An x-ray source can have increased x-ray flux and can simultaneously provide characteristic peaks and from multiple, different chemical elements. The target can include multiple layers of different chemical compositions. These layers can be distinguished by a higher atomic number, a higher energy K-alpha x-ray characteristic line, and a higher density in one layer compared to another layer. The layer that is lower in these characteristics can face the x-ray window. The layers can be formed by sputter deposition. 1. An x-ray tube comprising:a cathode and an anode electrically insulated from one another, the cathode configured to emit electrons in an electron-beam towards the anode, the anode including a target configured to generate and emit x-rays out of the x-ray tube in response to impinging electrons from the cathode, and an x-ray window located to allow the x-rays generated in the target material to emit out of the x-ray tube;the target has multiple primary-layers of different chemical compositions, including a high-layer and a low-layer, the high-layer and the low-layer have different chemical compositions with respect to each other, and the low-layer faces the x-ray window;the high-layer includes a high-element, a weight percent of the high-element in the high-layer is higher than any other element in the high-layer;the low-layer includes a low-element, a weight percent of the low-element in the low-layer is higher than any other element in the low-layer; andZ(H)>Z(L), where Z(H) is an atomic number of the high-element and Z(L) is an atomic number of the low-element.2. The x-ray tube of claim 1 , wherein:the multiple primary-layers further comprise an intermediate-layer;the intermediate-layer includes an intermediate-element, a weight percent of the intermediate-element in the intermediate-layer is higher than any other element in the intermediate-layer;the intermediate-layer is sandwiched between the high-layer and the low-layer;the high-layer, the ...

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Номер записи: 68
26-03-2015 дата публикации

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

Номер: US20150085989A1
Автор: Chen Huaibi, HUANG Wenhui, Kang Kejun, Tang Chuanxiang, Tang Huaping
Принадлежит:

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

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Номер записи: 69
18-03-2021 дата публикации

X-RAY EMITTER

Номер: US20210082655A1
Автор: FRITZLER ANJA, HAVLA Lukas, ROEHRER Peter
Принадлежит: Siemens Healthcare GmbH

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

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Номер записи: 70
24-03-2016 дата публикации

X-RAY GENERATING TUBE, X-RAY GENERATING APPARATUS AND X-RAY IMAGING SYSTEM USING THE SAME

Номер: US20160086761A1
Автор: Sando Kazuhiro, Sato Yasue, Ukiyo Noritaka, Yanagisawa Yoshihiro
Принадлежит:

Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film. 117.-. (canceled)18. An X-ray generating tube comprising:an insulating tube extending along a tube axis and having a pair of tube end portions;a cathode having an electron emitting source, the cathode being secured to one of the tube end portions;an anode having a target, the anode being secured to the other of the tube end portions; anda resistive film disposed on an outer periphery of the insulating tube, the resistive film having a lower sheet resistance than a sheet resistance of the insulating tube,wherein each of the cathode and the anode is connected to the resistive film, respectively.19. The X-ray generating tube according to claim 18 , wherein a dark current at 100° C. when a voltage of 100 kV is applied between the cathode and the anode is 0.1 μA or more to 10 μA or less.20. The X-ray generating tube according to claim 18 , wherein at least one of the cathode and the anode comprises an extending portion protruding from the peripheral edge portion in a longitudinal direction of the insulating tube; andwherein the resistive film is connected to the extending portion.21. The X-ray generating tube according to claim 20 , wherein the resistive film is sandwiched between the extending portion and the insulating tube.22. The X-ray generating tube according to claim 20 , wherein the extending portion is sandwiched between the resistive film and the insulating tube.23. The X-ray generating tube according to claim 22 , wherein an end portion of the resistive film joined to the ...

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Номер записи: 71
29-03-2018 дата публикации

High temperature annealing in x-ray source fabrication

Номер: US20180090293A1
Автор: Vance Scott Robinson, Yong Liang
Принадлежит: Baker Hughes Inc

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

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Номер записи: 72
29-03-2018 дата публикации

X-RAY GENERATING APPARATUS AND X-RAY FLUOROSCOPYIMAGING SYSTEM EQUIPPED WITH THE SAME

Номер: US20180090294A1
Автор: Chen Huaibi, Tang Chuanxiang, Tang Huaping
Принадлежит:

The present invention provides an X-ray generating apparatus and an X-ray fluoroscopy imaging system comprising the same. The X-ray generating apparatus comprises: an electron accelerator, an electron emission unit, and a target; and a shielding and collimating device, including a shielding structure and multiple collimators arranged in the shielding structure, wherein the collimators are thin gaps extending from the target to an exterior surface of the shielding structure and having an axis transverse an electron beam shooting the target, and at least two collimators forming different angles with the electron beam are arranged on the same side of a plane contains the electron beam shooting the target, and the planes where the collimators locate form angles from 30 degrees to 150 degrees with the electron beam shooting the target, to draw out planar beams having different draw-out angles, each having uniform intensity distribution in its respective plane. 1. An X-ray generating apparatus , comprising:an electron accelerator including an electron acceleration unit, an electron emission unit, and a target; anda shielding and collimating device, including a shielding structure and multiple collimators arranged in the shielding structure,wherein the target is surrounded by the shielding structure,the collimators are thin gaps extending from the target to an exterior surface of the shielding structure and having an axis transverse an electron beam shooting the target, and at least two collimators forming different angles with the electron beam are arranged on the same side of a plane contains the electron beam shooting the target, andthe planes where the collimators locate form angles from 30 degrees to 150 degrees with the electron beam shooting the target, to draw out planar beams having different draw-out angles, each having uniform intensity distribution in its respective plane, wherein the planar beams have energy difference therebetween.2. The X-ray generating ...

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Номер записи: 73
21-03-2019 дата публикации

X-RAY ILLUMINATION SYSTEM WITH MULTIPLE TARGET MICROSTRUCTURES

Номер: US20190088438A9
Автор: Kirz Janos, Lewis Sylvia Jia Yun, LYON Alan Francis, Reynolds David Charles, Yun Wenbing
Принадлежит: Sigray, Inc.

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 ...

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Номер записи: 74
30-03-2017 дата публикации

X-ray Tube Integral Heatsink

Номер: US20170094761A1
Автор: Eric Miller, Thomas E. Blair
Принадлежит: Moxtek Inc

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

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Номер записи: 75
16-04-2015 дата публикации

X-RAY GENERATOR

Номер: US20150103979A1
Автор: MAEDA HIROKI, MIYAOKA Akihiro, TAMURA Tomomi
Принадлежит: SHIMADZU CORPORATION

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

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Номер записи: 76
12-05-2022 дата публикации

X-RAY TUBE

Номер: US20220148840A1
Автор: Jeong Jin-woo
Принадлежит: Electronics and Telecommunications Research Institute

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 ...

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Номер записи: 77
03-07-2014 дата публикации

Apparatuses and methods for generating distributed x-rays

Номер: US20140185776A1
Автор: Chuanxiang Tang, Huaibi Chen, Huaping Tang, Jinsheng Liu, Xinshui Yan, Yaohong Liu, Yuanjing Li
Принадлежит: Nuctech Co Ltd, TSINGHUA UNIVERSITY

An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.

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Номер записи: 78
26-03-2020 дата публикации

SYSTEM AND METHOD FOR DEPTH-SELECTABLE X-RAY ANALYSIS

Номер: US20200098537A1
Автор: Kirz Janos, Yun Wenbing
Принадлежит:

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

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Номер записи: 79
04-04-2019 дата публикации

Cooling Spiral Groove Bearing Assembly

Номер: US20190103244A1
Автор: Kruse Kevin Shane
Принадлежит:

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 ...

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Номер записи: 80
02-06-2022 дата публикации

Liquid Crystal Polymer for Mounting X-ray Window

Номер: US20220172918A1
Автор: Abbott Jonathan, Sommer Jared
Принадлежит:

An x-ray window can include an adhesive layer sandwiched between and providing a hermetic seal between a thin film and a housing. The adhesive layer can include liquid crystal polymer. The liquid crystal polymer can be opaque, gas-tight, made of low atomic number elements, able to withstand high temperature, low outgassing, low leakage, able to relieve stress in the x-ray window thin film, capable of bonding to many different materials, or combinations thereof. 1. A method of making an x-ray window , the method comprising:placing a liquid crystal polymer between a thin film and a housing, the liquid crystal polymer being thermotropic, and the liquid crystal polymer includes an aromatic polyester;pressing the thin film and the housing towards each other and towards the liquid crystal polymer sandwiched between them; andheating the x-ray window.2. The method of claim 1 , wherein heating the x-ray window includes heating to a temperature of ≥250° C. and ≤500° C.3. The method of claim 2 , wherein heating the x-ray window includes maintaining the x-ray window at the temperature for a time of ≥30 minutes and ≤6 hours.4. The method of claim 1 , wherein the thin film and the housing are pressed towards each other and towards the liquid crystal polymer with a pressure of ≥1 KPa and ≤50 KPa.5. The method of claim 1 , wherein the thin film and the housing are pressed towards each other and towards the liquid crystal polymer with a pressure of ≥1 KPa.6. The method of claim 1 , wherein weight loss of the liquid crystal polymer claim 1 , prior to placing the liquid crystal polymer between the thin film and the housing claim 1 , is ≤1% at a temperature of 225° C. during a 24 hour period.7. A method of making an x-ray window claim 1 , the method comprising:placing a liquid crystal polymer between a thin film and a housing, the liquid crystal polymer includes an aromatic polyester;pressing the thin film and the housing towards each other and towards the liquid crystal polymer ...

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Номер записи: 81
20-04-2017 дата публикации

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

Номер: US20170110283A1
Автор: Katsunori Minami, Kenji Oohashi, Kohei Shirota
Принадлежит: Mars Tohken Solution Co Ltd

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.

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Номер записи: 82
30-04-2015 дата публикации

BALANCING IN AN X-RAY TUBE

Номер: US20150117604A1
Автор: Chrost Wolfgang
Принадлежит: KONINKLIJKE PHILIPS N.V.

The present invention relates to an X-ray tube with an active balancing arrangement, hi order to provide improved balancing for a minimized imbalance during operation, an X-ray tube () with an active balancing arrangement () is provided, comprising a rotating anode arrangement (), a bearing arrangement (), a driving arrangement () for rotating the anode arrangement, an imbalance detection arrangement (), and active balancing means (). The bearing arrangement is provided as a fixed bearing of the rotating anode arrangement for supporting the rotating anode arrangement. The imbalance detection arrangement is configured to detect an imbalance of the anode. The active balancing means are electro-magnetic balancing means configured to provide a magnetic field and to apply magnetic eccentricity forces to the rotating arrangement. 1. An X-ray tube with an active balancing arrangement , comprising:a rotating anode arrangement;a bearing arrangement;a driving arrangement for rotating the anode arrangement;an imbalance detection arrangement; andactive balancing means;wherein the bearing arrangement is provided as a fixed bearing of the rotating anode arrangement for supporting the rotating anode arrangement;wherein the imbalance detection arrangement is configured to detect an imbalance of the anode;wherein the active balancing means are electro-magnetic balancing means configured to provide a magnetic field and to apply magnetic eccentricity forces to the rotating arrangement.2. X-ray tube according to claim 1 , wherein a control unit is provided; andwherein the active balancing means are controlled according to signals provided by the imbalance detection arrangement.3. X-ray tube according to claim 1 , wherein the active balancing means comprise at least three balancing arrangements provided in at least two different planes claim 1 , which planes are perpendicular to an axis of rotation.4. X-ray tube according to claim 1 , wherein the driving arrangement comprises a rotor ...

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Номер записи: 83
20-04-2017 дата публикации

Cartridge-type x-ray source apparatus and x-ray emission apparatus using same

Номер: US20170111984A1
Автор: In Jae Baek, Soo Bong LEE, Tae Woo Kim
Принадлежит: Vatech Co Ltd, Vatech Ewoo Holdings Co Ltd

Disclosed are a cartridge-type X-ray source apparatus and an X-ray emission apparatus using the same. The X-ray source includes: a cathode electrode provided with an electron emission source by using a nanostructure; an anode electrode having a target emitting X-rays by electron collision; and a housing forming an external appearance, and exposing a cathode electrode terminal connected to the cathode electrode and an anode electrode terminal connected to the anode electrode to an outside thereof, wherein the cathode electrode terminal and the anode electrode terminal differ from each other in at least one of exposure direction, height, size, and shape.

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Номер записи: 84
02-04-2020 дата публикации

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

Номер: US20200105492A1
Автор: Behling Rolf Karl Otto, REPENNING THORBEN, SCHLENK TOBIAS
Принадлежит:

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 ...

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Номер записи: 85
02-04-2020 дата публикации

VACUUM PENETRATION FOR MAGNETIC ASSIST BEARING

Номер: US20200105493A1
Автор: Bostrom Neil, Greenland Kasey Otho, Miller Jonathan, Robinson Vance Scott
Принадлежит:

In one example, a lift assembly may exert a force on a rotatable anode of an X-ray source. The lift assembly may include a lift shaft and a lift electromagnet. The lift shaft may be coupled to an anode and configured to rotate around an axis of rotation of the anode. The lift electromagnet may be configured to apply a magnetic force to the lift shaft in a radial direction. The lift electromagnet may include a coupling portion extending between an interior of a vacuum envelope and an exterior of the vacuum envelope and a winding portion coupled to the coupling portion. Windings may at least partially surround the winding portion. 1. A lift assembly configured to exert a force on a rotatable anode of an X-ray source , the lift assembly comprising:a lift shaft coupled to an anode and configured to rotate around an axis of rotation of the anode; and a coupling portion extending between an interior of a vacuum envelope and an exterior of the vacuum envelope;', 'a winding portion coupled to the coupling portion; and', 'windings at least partially surrounding the winding portion., 'a lift electromagnet configured to apply a magnetic force to the lift shaft in a radial direction, the lift electromagnet comprising2. The lift assembly of claim 1 , wherein at least one dimension of the coupling portion at the interface between the coupling portion and the winding portion is larger than a corresponding dimension of the winding portion.3. The lift assembly of claim 1 , wherein the windings extend proximate an interface between the coupling portion and the winding portion or the windings extend to fully cover the interface between the coupling portion and the winding portion.4. The lift assembly of claim 1 , further comprising an alignment feature configured to align the coupling portion with respect to the insert wall.5. The lift assembly of claim 4 , the alignment feature comprising a flange defined in the coupling portion that retains the coupling portion when it is positioned ...

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Номер записи: 86
02-04-2020 дата публикации

MAGNETIC ASSIST BEARING

Номер: US20200105494A1
Автор: Bostrom Neil, Greenland Kasey Otho, Ramachandran Santosh, Robinson Vance Scott
Принадлежит:

In one example, a lift assembly may exert a force on a rotatable anode of an X-ray source. The lift assembly may include a lift shaft and a lift electromagnet. The lift shaft may be coupled to the anode and configured to rotate around an axis of rotation of the anode. The lift electromagnet may be configured to apply a magnetic force to the lift shaft in a radial direction. The lift electromagnet may include a curved surface that contours around at least a portion of the shaft wall. A radius of curvature of the curved surface of the lift electromagnet may be greater than a radius of curvature of the lift shaft, and the spacing between the curved surface of the lift electromagnet and the shaft wall may be non-uniform. 1. A lift assembly configured to exert a force on a rotatable anode of an X-ray source , the lift assembly comprising:a lift shaft coupled to the anode and configured to rotate around an axis of rotation of the anode, the lift shaft comprising a shaft wall; anda lift electromagnet configured to apply a magnetic force to the lift shaft in a radial direction, the lift electromagnet comprising a curved surface that contours around at least a portion of the shaft wall;wherein a radius of curvature of the curved surface of the lift electromagnet is greater than a radius of curvature of the lift shaft, wherein the spacing between the curved surface of the lift electromagnet and the shaft wall is non-uniform.2. The lift assembly of claim 1 , wherein a first distance between the curved surface and the shaft wall at a center of the lift electromagnet is smaller than a second distance between the curved surface and the shaft wall proximate an edge of the lift electromagnet.3. The lift assembly of claim 1 , wherein the second distance is between 1%-30% larger than the first distance.4. The lift assembly of claim 1 , wherein the shaft wall has a non-uniform thickness.5. The lift assembly of claim 1 , wherein the shaft wall comprises a taper proximate the center or ...

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Номер записи: 87
02-04-2020 дата публикации

MAGNETIC ASSIST ASSEMBLY HAVING HEAT DISSIPATION

Номер: US20200105495A1
Автор: Bostrom Neil, Greenland Kasey Otho, Robinson Vance Scott
Принадлежит:

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

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Номер записи: 88
26-04-2018 дата публикации

X-RAY EMITTER

Номер: US20180114669A1
Автор: SPORBECK THORSTEN
Принадлежит:

An X-ray emitter has a rotating anode rotatably mounted inside an X-ray tube by way of a multi-sliding surface bearing. The multi-sliding surface bearing has an inner and an outer sliding surface which are mounted so they can rotate relative to each other about an axis of rotation such that a gap is formed between the inner and outer sliding surfaces. A contour of the inner sliding surface, in a plane running perpendicular to the axis of rotation, is formed at least in certain sections by arc-shaped segments which are each centered around center points that are offset from each other. 1. An X-ray emitter , comprising:a rotating anode disposed inside an X-ray tube;a multi-sliding surface bearing rotatably mounting said rotating anode inside said X-ray tube;said multi-sliding surface bearing having an inner sliding surface and an outer sliding surface that are mounted for rotation relative to each other about an axis of rotation and forming a gap between said inner and outer sliding surfaces;said inner sliding surface, in a plane running perpendicular to the axis of rotation, having a contour formed at least in certain sections by arc-shaped segments that are each centered around center points arranged so as to be offset from one another.2. The X-ray emitter according to claim 1 , wherein said outer sliding surface is centered around the axis of rotation and at least one of said arc-shaped segments of said inner sliding surface is centered around a center point that is eccentrically offset from the axis of rotation.3. The X-ray emitter according to claim 1 , wherein all center points of said arc-shaped segments are arranged eccentrically offset at an equal radial spacing distance in respect of the axis of rotation.4. The X-ray emitter according to claim 1 , wherein the center points of said arc-shaped segments are arranged at regular angular positions circumferentially around the axis of rotation.5. The X-ray emitter according to claim 4 , wherein the center points ...

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Номер записи: 89
09-06-2022 дата публикации

Ceramic shielding apparatus

Номер: US20220181113A1
Автор: Han Sung Lee
Принадлежит: Individual

Disclosed is a ceramic shielding apparatus including at least one shield made of a ceramic material and provided inside or outside an X-ray tube to shield radiation; and supports configured to support the shield. According to such a configuration, disadvantages of conventional shielding materials such as lead can be addressed, so that a shield apparatus having excellent shielding properties while being harmless to the human body can be provided.

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Номер записи: 90
07-05-2015 дата публикации

Distributed, field emission-based x-ray source for phase contrast imaging

Номер: US20150124934A1
Автор: Berthold KP Horn, Luis Fernando Velasquez-Garcia, Rajiv Gupta, Richard Lanza, Tayo Akinwande
Принадлежит: Berthold KP Horn, Luis Fernando Velasquez-Garcia, Rajiv Gupta, Richard Lanza, Tayo Akinwande

An x-ray source for use in Phase Contrast Imaging is disclosed. In particular, the x-ray source includes a cathode array of individually controlled field-emission electron guns. The field emission guns include very small diameter tips capable of producing a narrow beam of electrons. Beams emitted from the cathode array are accelerated through an acceleration cavity and are directed to a transmission type anode, impinging on the anode to create a small spot size, typically less than five micrometers. The individually controllable electron guns can be selectively activated in patterns, which can be advantageously used in Phase Contrast Imaging.

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Номер записи: 91
18-04-2019 дата публикации

STATIONARY ANODE X-RAY TUBE

Номер: US20190115183A1
Автор: SAITO Tomonobu
Принадлежит: TOSHIBA ELECTRON TUBES & DEVICES CO., LTD

According to one embodiment, a stationary anode X-ray tube includes a cathode, an anode, an anode hood, an X-ray transmissive window and a vacuum envelope. A target surface of the anode is an inclined surface disposed to be spaced further away from the cathode towards a first direction. An angle made with respect to a second direction as the first direction is pivoted clockwise or counter-clockwise is any degree but 0°. 1. A stationary anode X-ray tube comprising:a cathode which emits electrons;an anode disposed to oppose the cathode in a direction along a tube axis and comprising a target surface on which a focal spot which emits an X-ray is formed as emitted with an electron emitted from the cathode;an anode hood fixed to the anode, extending to a side of the cathode, surrounding the target surface, set at a same potential as that of the anode, and comprising a first opening allowing electrons directed to the target surface from the cathode to pass therethrough and a second opening allowing an X-ray emitted from the focal spot to pass therethrough;an X-ray transmissive window which blocks the second opening of the anode hood and transmits an X-ray; andan electrical insulating vacuum envelope which accommodates the cathode, the anode, the anode hood and the X-ray transmissive window,the target surface being an inclined surface disposed to be spaced further away from the cathode towards a first direction normal to the tube axis, andif, with respect to a second direction directed from the focal spot to a center of the X-ray transmissive window when the anode and the X-ray transmissive window are viewed from the side of the cathode along the tube axis, an angle made with respect to the second direction when the first direction is pivoted clockwise or counter-clockwise is an angle θ, the angle θ being any angle but 0°.2. The X-ray tube of claim 1 , wherein0°≤θ≤90°.3. The X-ray tube of claim 1 , whereinthe X-ray transmissive window is formed from a material containing ...

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Номер записи: 92
18-04-2019 дата публикации

X-ray Tube Integral Heatsink

Номер: US20190116653A1
Автор: Blair Thomas E., Miller Eric
Принадлежит:

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

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Номер записи: 93
27-05-2021 дата публикации

X-ray machine ray tube heat dissipation device

Номер: US20210159041A1
Автор: Chen Jianwei, WANG HONGYU, ZHAO Zhiqiang
Принадлежит:

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

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Номер записи: 94
27-05-2021 дата публикации

Boron X-Ray Window

Номер: US20210159042A1
Автор: Abbott Jonathan, Sommer Jared
Принадлежит:

An x-ray window can include a thin film that comprises boron. The thin film can be relatively thin, such as for example ≤200 nm. This x-ray window can be strong; can have high x-ray transmissivity; can be impervious to gas, visible light, and infrared light; can be easy of manufacture; can be made of materials with low atomic numbers, or combinations thereof. The thin film can include an aluminum layer. A support structure can provide additional support to the thin film. The support structure can include a support frame encircling an aperture and support ribs extending across the aperture with gaps between the support ribs. The support structure can also include boron ribs aligned with the support ribs. 1. An x-ray window comprising:a support structure including a support frame encircling an aperture and support ribs extending across the aperture with gaps between the support ribs;a thin film spanning the aperture of the support structure and facing a gas or a vacuum on each of two opposite sides, a maximum thickness across a width of the thin film is ≤250 nm, and the thin film includes a boron hydride layer;the boron hydride layer has ≥90 weight percent boron, ≥0.5 weight percent hydrogen, and a total weight percent of 100%; andthe boron hydride layer has a thickness of ≥30 nm and ≤200 nm.2. The x-ray window of claim 1 , wherein the maximum thickness of the thin film is ≤150 nm.3. The x-ray window of claim 1 , wherein the boron hydride layer has a thickness of ≥45 nm.4. The x-ray window of claim 1 , wherein the boron hydride layer has a thickness of ≥90 nm.5. The x-ray window of claim 1 , wherein the boron hydride layer has ≥95 weight percent boron.6. The x-ray window of claim 1 , wherein the boron hydride layer has ≥97 weight percent boron.7. The x-ray window of claim 1 , wherein the boron hydride layer has ≥1 weight percent hydrogen.8. The x-ray window of claim 1 , wherein the boron hydride layer has ≤3 weight percent hydrogen.9. The x-ray window of claim 1 , ...

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Номер записи: 95
12-05-2016 дата публикации

Welded Spiral Groove Bearing Assembly

Номер: US20160133431A1
Автор: Hunt Ian Strider, Triscari Andrew Thomas
Принадлежит:

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 ...

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Номер записи: 96
21-05-2015 дата публикации

X-ray source, method for producing x-rays and use of an x-ray source emitting monochromatic x-rays

Номер: US20150139402A1
Автор: Jennifer SIRTL, Oliver Heid, Timothy HUGHES
Принадлежит: SIEMENS AG

X-ray sources and production of X-rays, in particular, producing monochromatic x-rays is provided. More specifically, a method for producing X-rays and the use of the X-ray source for x-raying bodies (for example human bodies). An aerogel, for example in the form of a rod, may be provided in a housing as a target. Said target may be bombarded with an electron beam, the aerogel being vaporized due to the extreme low density and the high energy. As a result, the target is guided by means of a roller such that an unused target for producing, in particular, the monochromatic X-rays, is always available.

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Номер записи: 97
21-05-2015 дата публикации

HIGH POWER X-RAY TUBE HOUSING

Номер: US20150139404A1
Автор: Andrews Gregory, Brimhall Owen D., Chamberlain Anson Cole, Smith David Craig
Принадлежит:

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

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Номер записи: 98
11-05-2017 дата публикации

X-RAY GENERATOR AND X-RAY IMAGING APPARATUS

Номер: US20170133192A1
Автор: Hiroki Tamayo, Matsutani Shigeki, Nomura Ichiro, Ogura Takao, Tamura Miki, Ueda Kazuyuki, Yanagisawa Yoshihiro
Принадлежит:

Provided is an X-ray generator including an electron passage in an electron-passage forming member; and a target on an insulative substrate. The transmission X-ray generator irradiates the target with electrons that have passed through the electron passage to generate X-rays. The target is provided at a central region of the substrate; the electron passage accommodates a secondary-X-ray generating section that generates X-rays by irradiation with electrons reflected from the target; the secondary-X-ray generating section and the target are disposed so that both of X-rays generated by direct irradiation of the target with the electrons and X-rays generated by irradiation of the secondary-X-ray generating section with the electrons reflected from the target are radiated to the outside; and at least part of the peripheral region of the substrate has higher transmittance for the X-rays generated at the secondary-X-ray generating section than the central region of the substrate. 1. An X-ray generator comprising:an anode including an electron passage formation member having an annular inner wall surface so as to form an electron passage hole;an integrated target including a target layer and an insulating substrate supporting the target layer; andan electron source facing the target layer configured to irradiate the target layer with electrons passing through the electron passage hole and radiate a primary X-ray from the target layer,wherein the target layer is remote from a periphery of the insulating substrate configured to form an uncovered peripheral region at where a peripheral region of the substrate is not covered by the target layer,wherein the electron passage formation member accommodates a secondary X-ray radiating region at the annular inner wall surface that radiates a secondary X-ray in response to irradiation with electrons reflected from the target layer, andwherein the secondary X-ray radiating region, the target layer and the uncovered peripheral region ...

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Номер записи: 99
02-05-2019 дата публикации

Continuous contact x-ray source

Номер: US20190131102A1
Автор: Benjamin A. Lucas, Carlos G. Camara, Daniel E. Cuadra, David M. Kamkar, Gilberto Jimenez, Mark G. Valentine, Pedro Cortes, Jr., Vasish Narayan M., Zachary J. Gamlieli
Принадлежит: Tribo Labs

An x-ray device utilizes a band of material to exchange charge through tribocharging within a chamber maintained at low fluid pressure. The charge is utilized to generate x-rays within the housing, which may pass through a window of the housing. Various contact rods may be used as part of the tribocharging process.

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Номер записи: 100