Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 4445. 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.

Подробнее
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.

Подробнее
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.

Подробнее
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.

Подробнее
Номер записи: 4
31-05-2012 дата публикации

Liquid anode radiation source

Номер: US20120133265A1
Автор: Robert Kakonyi
Принадлежит: GE Hungary Kft, Szeged South Lowland Cooperative Res Center of Life Sciences and Material Scie, University of

The present disclosure relates to a liquid anode radiation source ( 10 ) having the ability of turning upside down. The liquid anode radiation source ( 10 ) comprises a body ( 12 ) equipped with inlet and outlet having a wall ( 15 ) limiting the anode space ( 17 ), where the outlet connected to the inlet outside the body ( 12 ) will define a continuous flow path closing through the body, the inlet has a wall limiting an internal cross-section changing towards the anode space ( 17 ), wherein the cross-section of the inlet a deflector ( 11 ) is arranged in a position free of contacting the wall, filling out the cross-section partially and movable to the direction perpendicular to the cross-section; the liquid anode material ( 14 ) arranged in the flow path; the circulation unit inserted in the flow path in such a way that it can ensure the unidirectional movement of the anode material in the flow path.

Подробнее
Номер записи: 5
31-05-2012 дата публикации

Charged particle accelerators, radiation sources, systems, and methods

Номер: US20120134467A1
Автор: David Whittum, George Merdinian, James E. Clayton
Принадлежит: CLAYTON James E, David Whittum, George Merdinian

Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed.

Подробнее
Номер записи: 6
28-06-2012 дата публикации

Anode target for an x-ray tube and method for controlling the x-ray tube

Номер: US20120163530A1
Автор: Girijesh K. Yadava, Paavana Sainath, Xiaoye Wu
Принадлежит: General Electric Co

Anode targets for an x-ray tube and methods for controlling x-ray tubes for x-ray systems are provided. One x-ray system includes a field-generator configured to generate a field, an electron beam generator configured to generate an electron beam directed towards a target and a voltage controller configured to control the electron beam generator to produce an electron beam at a first energy level and an electron beam at a second energy level. The x-ray system also includes a field-generator controller configured to control a field to deflect at least one of the electron beams, wherein the electron beam, at the first energy level, impinges on the target at a first contact position and the electron beam, at the second energy level, impinges on the target at a second contact position. The at the first contact position and at the second contact position is configured to filter x-rays.

Подробнее
Номер записи: 7
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.

Подробнее
Номер записи: 8
12-07-2012 дата публикации

X-ray shielded connector

Номер: US20120178297A1
Автор: Edward Emaci, Ron Kent Hockersmith, Thomas Dean Schaefer
Принадлежит: General Electric Co

The present embodiments relate to off-focal X-ray radiation attenuation within a connector. In one embodiment, a connector X-ray shielding capabilities is provided. The connector includes a housing with openings for an electrical cable as well as an electrical connection. The connector further includes an X-ray shielding liner made of moldable synthetic material doped with an X-ray attenuating material. The X-ray shielding liner is disposed within the housing, and also includes openings for the electrical cable and electrical connection.

Подробнее
Номер записи: 9
02-08-2012 дата публикации

Electron emitting body and x-ray emitting device

Номер: US20120194057A1
Автор: Masanori Haba, Ryouichi Suzuki, Yoshihisa Ishiguro
Принадлежит: Life Technology Research Institute Inc

Provided are an electron emitting body having a high electron beam density and an X-ray emitting device embedding the electron emitting body. The electron emitting body has a substrate, the surface of which forms a concave surface, and a carbon film comprising a large number of projections made of carbon and expanded two-dimensionally. The carbon crystal grows such that first a swell portion ( 22 ) gradually becomes larger and then a needle-like portion ( 23 ) grows from the head of the swell portion ( 22 ). The needle-like portion ( 23 ) has a graphene sheet obliquely wound therearound in a multi-layer fashion and has a hollow inside. The axis of a carbon projection ( 21 ) thus formed is substantially orthogonal to a line tangent to the concave surface ( 11 ), so that the axes of a plurality of the carbon projections ( 21 ) intersect with each other at the focal point (F) of the concave surface ( 11 ).

Подробнее
Номер записи: 10
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.

Подробнее
Номер записи: 11
25-10-2012 дата публикации

Switching of anode potential of an x-ray generating device

Номер: US20120269321A1
Автор: Rolf Karl Otto Behling
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

The present invention relates to X-ray generating technology in general. Providing X-radiation having multiple photon energies may help differentiating tissue structures when generating X-ray images. Consequently, an X-ray generating device that allows the switching of a potential of an electron collecting element versus an electron emitting element for providing different energy modes is presented. According to the present invention, an X-ray generating device is provided, comprising an electron emitting element ( 16 ) and electron collecting element ( 20 ). The electron emitting element ( 16 ) and the electron collecting element ( 20 ) are operatively coupled for the generation of X-radiation ( 14 ). A potential is arranged between the electron emitting element ( 16 ) and the electron collecting element ( 20 ) for acceleration of electrons from the electron emitting element 16 to the electron collecting element ( 20 ), the electrons constituting an electron beam ( 7 ). The electron beam ( 17 ) is adapted to influence the potential.

Подробнее
Номер записи: 12
20-12-2012 дата публикации

Electron emitters for x-ray tubes

Номер: US20120321048A1
Автор: Jesse Knight Hubbard
Принадлежит: Varian Medical Systems Inc

Electron emitters for x-ray tubes. In one example embodiment, an electron emitter for an x-ray tube includes an electron filament and a plurality of electrical leads. The electron filament defines a plurality of openings. Each lead is positioned so as to extend through one of the openings and each lead is mechanically and electrically connected to the filament proximate the opening without the presence of braze material.

Подробнее
Номер записи: 13
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 ).

Подробнее
Номер записи: 14
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.

Подробнее
Номер записи: 15
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.

Подробнее
Номер записи: 16
23-05-2013 дата публикации

Transmission type radiation generating source and radiography apparatus including same

Номер: US20130129045A1
Автор: Ichiro Nomura, Kazuyuki Ueda, Koji Yamazaki, Miki Tamura, Shuji Aoki, Takao Ogura, Yasue Sato, Yoshihiro Yanagisawa
Принадлежит: Canon Inc

A transmission type radiation generating device includes an electron emitting source; a substrate that transmits radiation; a target provided on a surface of the substrate facing the electron emitting source and configured to generate radiation when electrons emitted from the electron emitting source are applied thereto; a shield member having a radiation passage that allows the radiation transmitted through the substrate to pass therethrough, the shield member being connected to the substrate and including at least a forward shield portion that protrudes in a direction away from the electron emitting source with respect to the target; and an insulating fluid in contact with the forward shield portion. The shield member includes a low-melting-point metal or a low-melting point alloy provided at least in the forward shield portion.

Подробнее
Номер записи: 17
18-07-2013 дата публикации

X-ray tube cathode with magnetic electron beam steering

Номер: US20130182825A1
Автор: James Russell Boye, Robert Clark Treseder
Принадлежит: Varian Medical Systems Inc

An x-ray tube cathode with magnetic electron beam steering. In one example embodiment, an x-ray tube cathode includes a cathode head and an electron emitter. The cathode head includes electrically conductive and non-magnetic material integrated with magnetic material. The cathode head defines an emitter slot in a portion of electrically conductive and non-magnetic material positioned between two portions of magnetic material. The electron emitter is positioned within the emitter slot. The electron emitter is configured to emit a beam of electrons. The beam of electrons is configured to be both focused by the electrically conductive and non-magnetic material and steered during beam formation by the magnetic material.

Подробнее
Номер записи: 18
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.

Подробнее
Номер записи: 19
03-10-2013 дата публикации

Target for x-ray generator, method of manufacturing the same and x-ray generator

Номер: US20130259207A1
Автор: Kazuaki Shimizu, Kazuhiko Omote, Naohisa Osaka
Принадлежит: Rigaku Corp

There is provided a target for an X-ray generator, including: a holder part made of an electrically conductive material and having an opening part; a diamond plate air-tightly joined to the holder part so as to close the opening part; a thin film target provided on a surface of the diamond plate, with its outer peripheral part extending to the holder part to be electrically connected to the holder part, wherein the holder part is configured to be electrically connected to a power supply of the X-ray generator, and the diamond plate is incorporated into the X-ray generator with one side disposed in a vacuum atmosphere where the thin film target is formed, and an opposite side thereto disposed at a side where the diamond plate is brought into thermal contact with a refrigerant and cooled.

Подробнее
Номер записи: 20
07-11-2013 дата публикации

X-ray generator, x-ray imaging apparatus, and control methods therefor

Номер: US20130294580A1
Автор: Makoto Sato, Masahiko Okunuki, Osamu Tsujii, Satoshi Shimizu, Takashi Ogura
Принадлежит: Individual

In an X-ray generator which includes an electron beam generating unit which has a plurality of electron emitters and generates an electron beam corresponding to driven electron emitters, and a target electrode which generates X-rays with the irradiation position of an electron beam generated by the electron beam generating unit being an X-ray focus, the X-ray focus shape formed by a set of X-ray focuses on the target electrode is controlled by individually controlling driving of the plurality of electron emitters.

Подробнее
Номер записи: 21
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 ...

Подробнее
Номер записи: 22
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 ...

Подробнее
Номер записи: 23
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 ...

Подробнее
Номер записи: 24
01-01-2015 дата публикации

X-ray imaging apparatus and method of operating the same

Номер: US20150003586A1
Автор: Byoung-hoon KOH, Woo-sup Han
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An X-ray imaging apparatus and a method of operating the X-ray imaging method are provided. The X-ray imaging apparatus includes a first panel configured to contact an object; an X-ray generator configured to maintain a uniform distance with the first panel and configured to generate an X-ray; a second panel facing the first panel and configured to contact the object; and an X-ray detector configured to detect the X-ray transmitted to the object.

Подробнее
Номер записи: 25
05-01-2017 дата публикации

Electron Emitting Construct Configured with Ion Bombardment Resistant

Номер: US20170004949A1
Автор: Iida Koichi, KENMOTSU HIDENORI, MASUYA HITOSHI
Принадлежит:

An electron emitting construct design of an x-ray emitter device is disclosed configured to facilitate radiation in the X-ray spectrum and further relates to preventing a cold cathode from being damaged by ion bombardment in high-voltage applications. The electron beam emitted by the emitting construct is focused and accelerated by an electrical field towards an electron anode target operable to attract electron beam to an associated focal spot, wherein the generated ions are accelerated along a trajectory perpendicular to the electric field in parallel to the surface of the electron anode target. More specifically, the present invention relates to realizing a robust cold cathode to avoid ion bombardments damages in high-voltage applications, by means of setting non-emitter zone surrounded by or set between the emitter areas. The system is further configured to provide an angled target anode or a stepped target anode to further reduce the ion bombardment damage. 113-. (canceled)15. The x-ray emitter device of claim 14 , further comprising a focus structure configured to direct said electrons towards said electron anode target such that said electrons strike an electron focal spot at an angle.16. The x-ray emitter device of claim 15 , wherein said at least one ion bombardment zone is disposed along a line perpendicular to the surface of said electron anode target at said electron focal spot.17. The x-ray emitter device of claim 15 , wherein said at least one ion bombardment zone has larger dimensions than said electron focal spot.18. The x-ray emitter device of claim 14 , wherein said at least one ion bombardment zone is coated with an elemental material.19. The x-ray emitter device of wherein said elemental material comprises a pure metal.20. The x-ray emitter device of wherein said elemental material comprises carbon.21. The x-ray emitter device of claim 14 , wherein said at least one ion bombardment zone comprises a central region surrounded by said electron ...

Подробнее
Номер записи: 26
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 ...

Подробнее
Номер записи: 27
04-01-2018 дата публикации

MULTI-LAYER X-RAY SOURCE TARGET

Номер: US20180005795A1
Автор: Dalakos George Theodore, LIANG Yong, Raber Thomas Robert, Robinson Vance Scott, Wild Christoph
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 a thermally-conductive substrate;', 'two or more X-ray generating layers, wherein X-ray generating layers are separated by at least one intervening thermally-conductive layer; and', 'one or more interface layers formed between a respective X-ray generating layer and one or both of the first thermally conductive layer or a respective intervening thermally-conductive layer., 'a target configured to generate X-rays when impacted by the electron beam, the target comprising2. The X-ray source of claim 1 , wherein one or both of the thermally-conductive substrate or the intervening thermally-conductive layers comprise diamond.3. The X-ray source of claim 1 , wherein the roughness of the thermally conductive layers is in the range of about 0.8 μm to about 4.0 μm.4. The X-ray source of claim 1 , wherein the roughness at the X-ray generating layers is in the range of about 0.3 μm to about 1.0 μm.5. The X-ray source of claim 1 , wherein the X-ray generating layer comprises one or more of tungsten claim 1 , molybdenum claim 1 , titanium-zirconium-molybdenum alloy (TZM) claim 1 , tungsten-rhenium alloy claim 1 , rhodium claim 1 , copper-tungsten alloy claim 1 , chromium claim 1 , iron claim 1 , cobalt claim 1 , copper claim 1 , silver.6. The X-ray source of claim 1 , wherein at least one interface layer comprises tungsten carbide.7. An X-ray source claim 1 , comprising:an emitter configured to emit an electron beam; and a first thermally- ...

Подробнее
Номер записи: 28
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 ...

Подробнее
Номер записи: 29
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 ...

Подробнее
Номер записи: 30
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.

Подробнее
Номер записи: 31
11-01-2018 дата публикации

VACUUM ELECTRON TUBE WITH PLANAR CATHODE BASED ON NANOTUBES OR NANOWIRES

Номер: US20180012723A1
Автор: MAZELLIER Jean-Paul, SABAUT Lucie
Принадлежит:

A vacuum electron tube comprises at least one electron-emitting cathode and at least one anode arranged in a vacuum chamber, the cathode having a planar structure comprising a substrate comprising a conductive material, a plurality of nanotube or nanowire elements electrically insulated from the substrate, the longitudinal axis of the nanotube or nanowire elements substantially parallel to the plane of the substrate, and at least one first connector electrically linked to at least one nanotube or nanowire element so as to be able to apply a first electrical potential to the nanowire or nanotube element. 1. A vacuum electron tube comprising at least one electron-emitting cathode and at least one anode arranged in a vacuum chamber ,the cathode having a planar structure comprising a substrate comprising a conductive material, a plurality of nanotube or nanowire elements electrically insulated from the substrate, the longitudinal axis of said nanotube or nanowire elements being substantially parallel to the plane of the substrate, and at least one first connector electrically linked to at least one nanotube or nanowire element so as to be able to apply a first electrical potential to the nanowire or nanotube element.2. The vacuum electron tube according to claim 1 , wherein the nanotube or nanowire elements are substantially parallel to one another.3. The vacuum electron tube according to claim 1 , wherein which the first connector comprises a substantially planar contact element arranged on an insulating layer and linked to a first end of said nanotube or nanowire element.4. The vacuum electron tube according to claim 1 , wherein the cathode further comprises a first control means linked to the first connector and to the substrate claim 1 , and configured to apply a bias voltage between the substrate and the nanotube element so that the nanotube or nanowire element emits electrons through its surface by tunnel effect.5. The vacuum electron tube according to claim 4 , ...

Подробнее
Номер записи: 32
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.

Подробнее
Номер записи: 33
17-01-2019 дата публикации

LAMELLA-SHAPED TARGETS FOR X-RAY GENERATION

Номер: US20190017942A1
Автор: FILEVICH Jorge
Принадлежит: FEI COMPANY

A method and system are disclosed for producing an x-ray image of a sample using a lamella-shaped target to improve the usual tradeoff between imaging resolution and image acquisition time. A beam of electrons impacts the lamella-shaped target normal to the narrower dimension of the lamella which then determines the virtual source size along that axis. For low-energy x-ray generation, the small electron penetration depth parallel to the wider dimension of the lamella determines the virtual source size along that axis. Conductive cooling of the target is improved over post targets with the same imaging resolution. The lamella-shaped target is long enough to ensure that the electron beam does not impact the support structure which would degrade the imaging resolution. Target materials may be selected from the same metals used for bulk or post targets, including tungsten, molybdenum, titanium, scandium, vanadium, silver, or a refractory metal. 1. A method for producing an x-ray image of a sample , the method comprising:directing a beam of electrons having landing energies of less than 2,000 eV along a first axis onto a first surface of a lamella-shaped target, the impact of the electrons in the beam onto the lamella-shaped target generating x-rays from within an interaction volume within the lamella-shaped target, wherein a portion of the x-rays are emitted towards an x-ray detector;positioning a sample along a second axis between the lamella-shaped target and the x-ray detector; andacquiring an x-ray image by collecting the x-rays which are not absorbed by the sample using the x-ray detector, the lamella-shaped target has a height in a direction along the first axis, a length in a direction along the second axis, and a width along a third axis that is different from the first and second axes;', 'the height and the length are at least twice the width; and', 'the electron beam interaction volume extends along the first axis from the first surface a distance of less than ...

Подробнее
Номер записи: 34
19-01-2017 дата публикации

COMPOSITE TARGET AND X-RAY TUBE WITH THE COMPOSITE TARGET

Номер: US20170018392A1
Автор: Cheng Chi-Chieh
Принадлежит:

A composite target is provided and is interacted with an electron to generate an X-ray, and an energy of the electron can be changed by controlling a tube voltage at least. The composite target includes a target body and an interposing layer which is connected with the target body. The interposing layer moves a highest peak of an energy spectrum of the X-ray toward a high energy direction. The interposing layer may be a single metal or a metal mixture. Not only a low energy photon of the X-ray can be filtered by the interposing layer, but also a distribution of the low energy photon of the X-ray can be increased by increasing a thickness of the interposing layer. As the tube voltage is enhanced, an amount of a high energy photon of the X-ray generated is dramatically increased. An X-ray tube containing the above composite target is also provided. 1. A composite target , being interacted with an electron to generate an X-ray , and an energy of the electron is capable of being changed by controlling a tube voltage at least , and the composite target comprising:a target body; andan interposing layer, connected with the target body,wherein the interposing layer moves a highest peak of an energy spectrum of the X-ray toward a high energy direction,a low energy photon of the X-ray is filtered by the interposing layer, and the low energy photon of the X-ray is capable of being increased by increasing a thickness of the interposing layer,as the tube voltage is enhanced, an amount of a high energy photon of the X-ray generated is increased.2. The composite target according to claim 1 , whereina material of the interposing layer is selected from the group consisting of copper, silver, gold, indium, nickel, tin, aluminum, diamond, bismuth, antimony, tungsten, molybdenum, tantalum, zinc, cobalt, and a combination thereof.3. The composite target according to claim 1 , wherein the target body at least comprises:a first film layer; anda second film layer, disposed at one side of ...

Подробнее
Номер записи: 35
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.

Подробнее
Номер записи: 36
21-01-2016 дата публикации

X-RAY GENERATING TUBE, X-RAY GENERATING APPARATUS, X-RAY IMAGING SYSTEM, AND ANODE USED THEREFOR

Номер: US20160020060A1
Автор: OHASHI Yasuo, Ueda Kazuyuki
Принадлежит:

An anode member includes a first metal tube and a second metal tube having a coefficient of thermal expansion that is larger than that of the first metal tube. A peripheral portion of a target is bonded to the anode member via a bonding material that is arranged so as to extend over the first metal tube and the second metal tube.

Подробнее
Номер записи: 37
21-01-2016 дата публикации

TRANSMISSION-TYPE TARGET FOR X-RAY GENERATING SOURCE, AND X-RAY GENERATOR AND RADIOGRAPHY SYSTEM INCLUDING TRANSMISSION-TYPE TARGET

Номер: US20160020061A1
Автор: Ikarashi Yoichi, Ogura Takao, Tsukamoto Takeo, Yamada Shuji, Yoshitake Tadayuki
Принадлежит:

A transmission-type target includes a target layer and a transmissive substrate. The target layer is configured to generate X-rays in response to irradiation of electrons. The transmissive substrate supports the target layer and is configured to allow the X-rays generated in the target layer to pass therethrough. The transmissive substrate includes polycrystalline diamond in which grain boundaries extend in a substrate thickness direction and a substrate plane direction. The grain boundaries define an electrical potential of the target layer.

Подробнее
Номер записи: 38
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 ...

Подробнее
Номер записи: 39
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 ...

Подробнее
Номер записи: 40
21-01-2016 дата публикации

HIGH-FREQUENCY WAVE TYPE OF X-RAY GENERATOR

Номер: US20160021726A1
Автор: BYUN MIN SOO, SEO YOUNG MIN
Принадлежит:

A high frequency X-ray generator includes an anode voltage generator, a cathode voltage generator and a X-ray tube. The anode voltage generator is configured to generate a first high voltage. The cathode voltage generator is configured to generate a second high voltage having a same waveform as the first high voltage. The second high voltage has a different phase by 180 degrees compared to the first high voltage. The X-ray tube is configured to generate a X-ray by the first high voltage and the second high voltage. The first high voltage is applied through an anode terminal. The second high voltage is applied through a cathode terminal.

Подробнее
Номер записи: 41
17-01-2019 дата публикации

X-ray tube for improving electron focusing

Номер: US20190019647A1
Автор: Dong-Gil JUNG, Dong-Hoon Lee, Dongkyu SEOL, Eun-Min KIM, Sang-Bong Seo, Sang-Hyo Kim, Sih-Wan HEO
Принадлежит: SUNJE HI-TEK Co Ltd

Disclosed is an X-ray tube for improving electron focusing, which allows thermoelectrons emitted from a filament to efficiently reach a target of an X-ray irradiation window. To achieve this, the X-ray tube includes: a thermionic emitter configured to emit thermoelectrons by application of a negative high voltage; a focusing tube configured to focus the thermoelectrons emitted from the thermionic emitter; an X-ray irradiation window configured to irradiate X-rays outside by the thermoelectrons bombarded on a target distributed on the X-ray irradiation window, to generate the X-rays after the thermoelectrons pass through the focusing tube; a tube part including both the thermionic emitter and the focusing tube; and a housing surrounding the tube part, wherein the focusing tube and the housing are configured to have a same potential such that movement directions of the thermoelectrons are directed to the X-ray irradiation window.

Подробнее
Номер записи: 42
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 ...

Подробнее
Номер записи: 43
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 , ...

Подробнее
Номер записи: 44
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 ...

Подробнее
Номер записи: 45
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 ...

Подробнее
Номер записи: 46
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 ...

Подробнее
Номер записи: 47
02-02-2017 дата публикации

RADIOGRAPHIC APPARATUS

Номер: US20170027531A1
Автор: Ito Nobuhiro, Shiozawa Takashi, Tsujino Kazuya, Ueda Kazuyuki
Принадлежит:

A radiographic apparatus includes a target array and an X-ray detecting unit. The target array includes a plurality of targets and a forward shielding member. The X-ray detecting unit includes a detecting portion. The X-ray detecting unit further includes a shielding portion extending toward an outer side of the detecting portion along an array direction in which the targets are arrayed. 1. A radiographic apparatus comprising: a target array including a plurality of targets that are arrayed in a line and a forward shielding member, the forward shielding member including a plurality of partitions that each separate adjacent ones of the targets, and', 'an electron emitting source that emits electron beams to electron incident surfaces of the plurality of targets, respectively; and, 'an X-ray generating unit that includes'} a detecting portion facing the target array and including a plurality of detecting devices, and', 'a shielding portion provided on an outer side of the detecting portion along an array direction in which the targets are arrayed in a line,, 'an X-ray detecting unit that includes'}wherein the X-ray generating unit forms a main exposed area and a penumbra area on the X-ray detecting unit, the penumbra area being formed on the outer side of the main exposed area, andwherein the shielding portion includes at least a part positioned in the penumbra area.2. The radiographic apparatus according to claim 1 , wherein the shielding portion includes a part that is positioned on the outer side of the penumbra area along the array direction.3. The radiographic apparatus according to claim 1 , wherein the shielding portion includes at least a contact part provided in contact with an outer edge of the detecting portion and a part extending from the contact part toward the outer side along the array direction claim 1 , or an overlapping part overlapping the detecting portion along the array direction and a part extending from the overlapping part toward the outer ...

Подробнее
Номер записи: 48
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.

Подробнее
Номер записи: 49
24-01-2019 дата публикации

LOW PRESSURE WIRE ION PLASMA DISCHARGE SOURCE, AND APPLICATION TO ELECTRON SOURCE WITH SECONDARY EMISSION

Номер: US20190027336A1
Автор: BESAUCÈLE Hervé, Ceccato Paul
Принадлежит:

Disclosed is a low pressure wire ion plasma discharge source including an elongated ionization chamber housing at least two parallel anode wires extending longitudinally within the ionization chamber. A first of the at least two anode wires is connected to a DC voltage supply and a second of the at least two anode wires is connected to a pulsed voltage supply. 112345. Low pressure wire ion plasma discharge source comprising an elongated ionization chamber () housing at least two anode wires ( , ) extending longitudinally within the ionization chamber , a DC voltage supply () and a pulsed voltage supply () ,{'b': 2', '4', '3', '5, 'wherein a first () of said at least two anode wires is connected to the DC voltage supply () and a second () of said at least two anode wires is connected to the pulsed voltage supply ().'}245. Low pressure wire ion plasma discharge source according to claim 1 , further comprising several anode wires connected to the DC voltage supply () and/or several anode wires connected to the pulsed voltage supply ().34. Low pressure wire ion plasma discharge source according to claim 1 , wherein the direct current generated by the DC voltage supply () is equal to or lower than 1 m A/cm.45. Low pressure wire ion plasma discharge source according to claim 1 , wherein the pulsed voltage supply () generates a pulsed large current of 1 to 5 A/cm or more.5101112131414111512a,b. Low pressure wire ion plasma discharge source according to claim 1 , wherein the ionization chamber () comprises a main elongated chamber () and an elongated auxiliary chamber () in fluidic communication along their entire lengths through a slit () claim 1 , the at least one pulsed voltage supplied anode wire () extending longitudinally in the main chamber () and the at least one DC voltage supplied anode wire () extending longitudinally in the auxiliary chamber ().6. Electron source with secondary emission under ion bombardment in a low pressure chamber claim 1 , further comprising ...

Подробнее
Номер записи: 50
28-01-2021 дата публикации

Large scale stable field emitter for high current applications

Номер: US20210027972A1
Автор: Anthony SKEATS, Brian Gonzales, Gandalf DU PREEZ, Peter YARON, Robert C. SHEEHY, Steven TREWARTHA, Susanne SAHLOS
Принадлежит: Micro X Ltd

The present invention relates to large area field emission devices based on the incorporation of macroscopic, microscopic, and nanoscopic field enhancement features and a designed forced current sharing matrix layer to enable a stable high-current density long-life field emission device. The present invention pertains to a wide range of field emission sources and is not limited to a specific field emission technology. The invention is described as an X-ray electron source but can be applied to any application requiring a high current density electron source.

Подробнее
Номер записи: 51
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 ...

Подробнее
Номер записи: 52
28-01-2021 дата публикации

X-ray source and method for generating x-ray radiation

Номер: US20210027974A1
Автор: Bjorn Hansson, Per TAKMAN, Shiho Tanaka, Yuli Wang
Принадлежит: EXCILLUM AB

The present inventive concept relates to an X-ray source comprising: a liquid target source configured to provide a liquid target moving along a flow axis; an electron source configured to provide an electron beam; and a liquid target shaper configured to shape the liquid target to comprise a non-circular cross section with respect to the flow axis, wherein the non-circular cross section has a first width along a first axis and a second width along a second axis, wherein the first width is shorter than the second width, and wherein the liquid target comprises an impact portion being intersected by the first axis; wherein the x-ray source is configured to direct the electron beam towards the impact portion such that the electron beam interacts with the liquid target within the impact portion to generate X-ray radiation.

Подробнее
Номер записи: 53
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 ...

Подробнее
Номер записи: 54
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.

Подробнее
Номер записи: 55
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- ...

Подробнее
Номер записи: 56
04-02-2016 дата публикации

X-Ray Tube Cathode With Shaped Emitter

Номер: US20160035532A1
Автор: Allen Donald Robert, Lemaitre Sergio, Lemminger Ryan James, Marte Judson Sloan, Poquette Ben David, Roffers Richard Michael, Steinlage Gregory Alan
Принадлежит:

An emitter for a cathode of an X-ray tube is provided that includes a shaped emitting surface. The emitting surface is shaped in a suitable process in order to enable the emitting surface to focus electron beams emitted from the emitting surface on a focal spot on a target of less than 1.0 mm without the need for any additional focusing elements in the X-ray tube. 1. A cathode adapted for use with an X-ray tube , the cathode comprising:a. a housing; andb. an emitter disposed within the housing, the emitter including a rear surface and an emitting surface generally opposite the rear surface, the emitting surface having at least one shaped section, wherein the emitter is formed in a process that does not utilize a die.2. The cathode of wherein the emitting surface comprises a number of separate shaped sections.3. The cathode of wherein the emitting surface comprises at least one flat section.4. The cathode of wherein the at least one Hat section is disposed between adjacent shaped sections.5. The cathode of wherein the rear surface includes at least one shaped section.6. The cathode of wherein the emitting surface focuses emitted electron beams on a focal spot of less than 1.0 mm in width.7. The cathode of wherein the emitter is formed in a method or process selected from the group consisting of: additive methods and processes claim 1 , material removal methods and processes claim 1 , forming methods and processes using temperature gradients to cause material bending with no die contacting the material being formed claim 1 , and combinations thereof.8. The cathode of wherein the additive methods and processes are selected from the group consisting of printing methods including both wire and powder based methods claim 7 , spark plasma sintering processes (SPS) claim 7 , powder-based SPS claim 7 , and SPS utilizing a stylus.9. The cathode of wherein the material removal methods and processes are selected from the group consisting of grinding claim 7 , electrodischarge ...

Подробнее
Номер записи: 57
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 ...

Подробнее
Номер записи: 58
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 ...

Подробнее
Номер записи: 59
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.

Подробнее
Номер записи: 60
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 ...

Подробнее
Номер записи: 61
01-02-2018 дата публикации

X-RAY SYSTEMS AND METHODS INCLUDING X-RAY ANODES

Номер: US20180033583A1
Автор: Olsen Neil Dee
Принадлежит:

An anode for an X-ray tube can include a ceramic body, e.g., material that includes yttrium-oxide derivatives. Upon collision with an anode, the kinetic energy of an electron beam in an X-ray tube is converted to high frequency electromagnetic waves, i.e., X-rays. An anode with a ceramic body can reduce costs and/or weight, extend the life of the anode or associated components (e.g., bearings) and simultaneously provide a high heat storage capacity. 1. An X-ray anode , comprising: emits X-rays at least in a thermally excited state in response to incident electrons from an electron beam, and', 'for at least a first temperature range, increases in thermal conductivity with increased temperature; and, 'a ceramic body that'} 'wherein the received plurality of incident electrons increases the thermal energy in the conductive metal wires, and the conductive metal wires diffuse the increase in thermal energy to the ceramic body, such that the temperature of the ceramic body increases as does the thermal conductivity of the ceramic body for at least the first temperature range.', 'one or more conductive metal wires thermally coupled to the ceramic body to receive a plurality of incident electrons from the electron beam,'}2. The X-ray anode of claim 1 , wherein the ceramic body comprises yttrium aluminum garnet.3. The X-ray anode of claim 3 , wherein a thermally unexcited state comprises a temperature range below 100 degrees Celsius and wherein a thermally excited state comprises a temperature range above 150 degrees Celsius.4. The X-ray anode of claim 3 , wherein the first temperature range includes temperatures between 30 degrees Celsius and 500 degrees Celsius.5. The X-ray anode of claim 1 , wherein the conductive metal wires extend radially out relative to the ceramic body.6. The X-ray anode of claim 1 , wherein the conductive metal wires comprise one conductive metal wire that forms a spiral beginning at the center of the ceramic body and ending at the edge of the ...

Подробнее
Номер записи: 62
01-02-2018 дата публикации

X-RAY SYSTEMS AND METHODS INCLUDING X-RAY ANODES

Номер: US20180033584A1
Автор: Olsen Neil Dee
Принадлежит:

An anode for an X-ray tube can include a body comprising one or more of a yttrium-oxide derivative, titanium diboride, boron carbide, titanium suboxide, reaction bonded silicon carbide, and reaction boded silicon nitride. Upon collision with an anode, the kinetic energy of an electron beam in an X-ray tube is converted to high frequency electromagnetic waves, i.e., X-rays. An anode with a body from one or more of the above materials can reduce costs and/or weight, extend the life of the anode or associated components (e.g., bearings) and simultaneously provide a high heat storage capacity than traditional molybdenum and tungsten anodes. 1. An X-ray anode , comprising:a body that conducts electrons and emits X-rays in response to the incidence of the electrons when in a thermally excited state; and 'wherein the received electrons produce an increase in thermal energy in the deposited conductive metal, and the deposited conductive metal diffuses the increase in thermal energy to the body.', 'a conductive metal deposited onto the body to receive a plurality of electrons from an electron beam,'}2. The X-ray anode of claim 1 , wherein the conductive metal is deposited onto the body using doping.3. The X-ray anode of claim 1 , wherein the body is infused with the deposited conductive metal.4. The X-ray anode of claim 1 , wherein the body comprises titanium diboride.5. The X-ray anode of claim 1 , wherein the body comprises boron carbide.6. The X-ray anode of claim 1 , wherein the body comprises titanium suboxide.7. An X-ray anode claim 1 , comprising: emits X-rays at least in a thermally excited state in response to incident electrons from an electron beam, and', 'for at least a first temperature range, increases in thermal conductivity with increased temperature; and, 'a body that'} 'wherein the received plurality of incident electrons increases the thermal energy in the conductive metal wires, and the conductive metal wires diffuse the increase in thermal energy to the ...

Подробнее
Номер записи: 63
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 ...

Подробнее
Номер записи: 64
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 ...

Подробнее
Номер записи: 65
09-02-2017 дата публикации

SPARK GAP X-RAY SOURCE

Номер: US20170040079A1
Автор: Hansen Bill, Miller Eric
Принадлежит:

In one embodiment, the invention includes an x-ray source having a cathode with (1) a pointed end or (2) an elongated blade oriented substantially transverse with respect to a longitudinal axis of the cathode. The pointed end or blade can be pointed towards an anode. 1. An x-ray source comprising:a. an enclosure including an internal cavity;b. a gas disposed in the cavity and having a pressure of at least 0.0001 Torr;c. an anode and a cathode attached to the enclosure;d. the anode and the cathode being electrically-conductive;e. the cathode and the anode being spaced apart from each other and electrically insulated from each other;f. the cathode having a pointed end disposed within the cavity and pointed towards the anode with a gap between the pointed end and the anode; and i. associated with and connected to the anode;', 'ii. being substantially transmissive to x-rays;', 'iii. forming at least part of a wall of the enclosure; and', 'iv. separating at least a portion of the cavity from an exterior of the enclosure., 'g. an electrically-conductive window2. The x-ray source of claim 1 , wherein:a. the cathode is aligned along a longitudinal axis of the enclosure;b. the window is disposed in a lateral side of the enclosure;c. the anode includes an inclined region having an acute angle with respect to the longitudinal axis;d. a target material, configured to emit x-rays in response to impinging electrons from the cathode, is disposed on the inclined region of the anode;e. the target material is located to receive impinging electrons from the cathode and to emit x-rays towards the window;f. the inclined region includes a protrusion extending from a face of the anode facing the pointed end of the cathode;g. a radius of curvature at a distal end of the protrusion is less than 0.5 millimeters; andh. a distance from the face of the anode to the distal end of the protrusion is greater than two times the radius of curvature.3. The x-ray source of claim 2 , wherein a diameter ...

Подробнее
Номер записи: 66
12-02-2015 дата публикации

X-RAY ANALYZER HAVING MULTIPLE EXCITATION ENERGY BANDS PRODUCED USING MULTI-MATERIAL X-RAY TUBE ANODES AND MONOCHROMATING OPTICS

Номер: US20150043713A1
Автор: Chen Zewu
Принадлежит: X-RAY OPTICAL SYSTEMS, INC.

An x-ray tube includes a target on which electrons impinge to form a diverging x-ray beam. The target has a surface formed from first and second target materials, each tailored to emit a respective x-ray energy profile. A first x-ray optic may be provided for directing the beam toward the sample spot, the first x-ray optic monochromating the diverging x-ray beam to a first energy from the energy emitted by the first target material; and a second x-ray optic may be provided, for directing the beam toward the sample spot, the second x-ray optic monochromating the diverging x-ray beam to a second energy from the energy emitted by the second target material. Fluorescence from the sample spot induced by the first and second monochromated energies is used to measure the concentration of at least one element in the sample, or separately measure elements in a coating and underlying substrate. 1. An x-ray tube for an x-ray analyzer , comprising a target on which electrons impinge to produce x-rays , the target having a surface formed from at least two target materials , each target material emitting a respective energy profile upon impingement by the electrons.2. The x-ray tube of claim 1 , wherein each of the at least two target materials is formed in a separate layer on the target.3. The x-ray tube of claim 1 , wherein each of the at least two target materials is combined into a single alloy layer on the target.4. The x-ray tube of claim 1 , wherein:one of the at least two target materials is formed in a first layer on the target; andat least two target materials are combined into a second, alloy layer on the target.6. The apparatus of claim 5 , further comprising:the target of the x-ray tube having a surface formed from a third target material, the third target material tailored to emit a respective energy profile upon impingement by the electrons; anda third x-ray optic for receiving the diverging x-ray beam and directing the beam toward the sample spot, the third x-ray ...

Подробнее
Номер записи: 67
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 ...

Подробнее
Номер записи: 68
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 , ...

Подробнее
Номер записи: 69
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 ...

Подробнее
Номер записи: 70
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 ...

Подробнее
Номер записи: 71
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 ...

Подробнее
Номер записи: 72
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 ...

Подробнее
Номер записи: 73
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 ...

Подробнее
Номер записи: 74
15-02-2018 дата публикации

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

Номер: US20180047540A1
Автор: AUSBURN Phillip Kent
Принадлежит:

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

Подробнее
Номер записи: 75
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.

Подробнее
Номер записи: 76
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.

Подробнее
Номер записи: 77
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.

Подробнее
Номер записи: 78
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.

Подробнее
Номер записи: 79
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 ...

Подробнее
Номер записи: 80
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 ...

Подробнее
Номер записи: 81
22-02-2018 дата публикации

THERMIONIC EMISSION DEVICE, FOCUS HEAD, X-RAY TUBE AND X-RAY RADIATOR

Номер: US20180053618A1
Автор: FRITZLER ANJA, GEITHNER Peter
Принадлежит:

A thermionic emission device includes an indirectly heatable main emitter, which is constructed as a flat emitter with a main emission surface, and at least one connectible heat emitter with a heat emission surface. The heat emission surface is disposed at a predefinable distance from the main emission surface. The main emission surface can be asymmetrically heated by the heat emission surface. In the operating state, the main emitter is at a main potential and the heat emitter is at a heating potential which differs from the main potential. An x-ray tube with the thermionic emission device has a longer service life with a consistent image quality. 1. A thermionic emission device , comprising:an indirectly heatable main emitter being constructed as a flat emitter having a main emission surface; andat least one connectible heat emitter having a heat emission surface;said heat emission surface being disposed at a predefinable distance from said main emission surface;said heat emission surface being configured to asymmetrically heat said main emission surface;in an operating state, said main emitter being at a main potential and said heat emitter being at a heating potential differing from said main potential.2. The thermionic emission device according to claim 1 , wherein said heat emission surface is disposed asymmetrically relative to said main emission surface.3. The thermionic emission device according to claim 1 , wherein said heat emission surface is configured to be switched asymmetrically relative to said main emission surface.4. The thermionic emission device according to claim 1 , wherein said heat emitter includes at least two individually switchable sub-heat emitters.5. The thermionic emission device according to claim 1 , wherein said heat emitter is a flat emitter.6. The thermionic emission device according to claim 1 , wherein said heat emitter is a coil emitter.7. The thermionic emission device according to claim 1 , which further comprises a focusing ...

Подробнее
Номер записи: 82
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 ...

Подробнее
Номер записи: 83
22-02-2018 дата публикации

X-RAY GENERATING TUBE, X-RAY GENERATING APPARATUS, AND RADIOGRAPHY SYSTEM

Номер: US20180053624A1
Автор: Ikarashi Yoichi
Принадлежит:

An X-ray generating tube includes: an anode including a target and an anode member electrically connected to the target; a cathode including an electron emitting source and a cathode member electrically connected to the electron emitting source; and an insulating tube joined at one end to the anode member and joined at the other end to the cathode member so that the target and the electron emitting portion face each other, in which an inner circumferential conductive film is formed on an inner surface of the insulating tube; an end surface conductive film extends from one edge of the inner circumferential conductive film on the one end side onto a surface of the one end of the insulating tube; and the end surface conductive film is sandwiched between the end surface and the anode member to be electrically connected to the anode member. 114.-. (canceled)15. An X-ray generating tube comprising:an insulating tube having a pair of ends in a tube axial direction; an electron emitting source having an electron emitting portion configured to irradiate an electron beam; and', 'a cathode member electrically connected to the electron emitting source; and, 'a cathode connected to the one end of the insulating tube and comprising a target configured to generate an X-ray upon an irradiation with the electron beam;', 'an anode member which is electrically connected to the target and which holds the target; and', 'an outer anode sleeve extending along the insulating tube from a peripheral portion of the anode member configured to be connected to the insulating tube,, 'an anode connected to the other end of the insulating tube and comprisingwherein the outer anode sleeve is connected to an outer surface of the insulating tube via a joining member.16. The X-ray generating tube according to claim 15 , wherein the joining member is annularly located between the outer surface of the insulating tube configured to make a hermetic joining between the insulating tube and the outer anode ...

Подробнее
Номер записи: 84
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 ...

Подробнее
Номер записи: 85
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.

Подробнее
Номер записи: 86
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 ...

Подробнее
Номер записи: 87
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 ...

Подробнее
Номер записи: 88
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 ...

Подробнее
Номер записи: 89
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 ...

Подробнее
Номер записи: 90
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 ...

Подробнее
Номер записи: 91
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 ...

Подробнее
Номер записи: 92
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 ...

Подробнее
Номер записи: 93
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 ...

Подробнее
Номер записи: 94
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 ...

Подробнее
Номер записи: 95
08-03-2018 дата публикации

Multi-Cathode EUV and Soft X-ray Source

Номер: US20180068821A1
Автор: Mark F. Eaton
Принадлежит: Stellarray Inc

An efficient source of EUV or SXR flux uses multiple e-beams from multiple cathodes to impact a wide anode target with a flux-generating surface to generate flux over a wide area. The conversion efficiency of e-beam power to flux power may be improved by the direction of the e-beams towards the anode target at shallow or grazing incidence angles or the use of mirrored anode surfaces which reflect EUV or SXR. The source is enclosed in a vacuum chamber and performs work such as the penetration of photoresist on a semiconductor wafer in vacuum.

Подробнее
Номер записи: 96
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 ...

Подробнее
Номер записи: 97
10-03-2016 дата публикации

HIGH VOLTAGE TUBE TANK FOR A PORTABLE X-RAY

Номер: US20160073485A1
Автор: Kwan Young Bae
Принадлежит:

The high voltage tube tank of x-ray system is embodied by miniaturizing the portable x-ray system for better mobility and portability. The high voltage tube tank of portable x-ray system comprising of an xray tube for generating x-rays, a high voltage transformer for generating high voltage, a high voltage rectification circuit for transforming and boosting AC voltage to DC voltage, and a housing for storing the apparatuses thereof, is configured in such a way that the high voltage rectification circuit is comprised of multiple high voltage capacitors linearly aligned on both sides of the circuit board and the high voltage diode built between the confronting high voltage capacitors, wherein the x-ray tube is placed between the high voltage capacitors thereof. 1. A high voltage tube tank of portable x-ray system , comprising;an x-ray tube for generating x-rays, a high voltage transformer for generating high voltage, a high voltage rectification circuit for transforming and boosting AC voltage to DC voltage and a housing for storing the apparatuses thereof, wherein;the high voltage rectification circuit is comprised of multiple high voltage capacitors linearly aligned on both sides of the circuit board and the high voltage diode built between the confronting high voltage capacitors, wherein;the circuit board is equipped with a fixing plate to install the x-ray tube in such a way that the x-ray tube is placed on the fixing plate between the high voltage capacitors.2. The high voltage tube tank of portable x-ray system of claim 1 , wherein; the housing claim 1 , includes the casing with open top and shielded bottom claim 1 , and the terminal PCB for shielding the open top claim 1 , wherein;the elevated platform is built at the open end of the casing, and the clamp is installed at the elevated platform to fix the terminal PCB from inside of the casing through the clamp.3. The high voltage tube tank of portable x-ray system of claim 2 , wherein:the inner wall placed on ...

Подробнее
Номер записи: 98
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 ...

Подробнее
Номер записи: 99
05-03-2020 дата публикации

X-ray system and method for generating x-ray image in color

Номер: US20200069271A1
Автор: Fahad Ahmad ABOZAID, Nabil Mohammed MAALEJ
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A method for generating an x-ray image in color includes selecting three-sets of x-ray images in gray scale acquired with x-rays having different energy spectra, assigning basic colors RGB to the three-sets, and displaying the x-ray image in color with RGB signals generated. A system for generating an x-ray image in color includes an x-ray generator configured to generate at least three sets of x-rays with different energy spectra, an x-ray detector, a controller, a computer, and a color display. The computer is configured to generate three sets of x-ray images from output data of the x-ray detector acquired for x-rays with different energy spectra, assign RGB and display an x-ray image in color. A non-transitory computer readable medium stores an instruction, when the instruction is executed by a processor, cause the processor to perform the method for generating an x-ray image in color.

Подробнее
Номер записи: 100