公开(公告)号：US09968326B2

公开(公告)日：2018-05-15

申请号：US14794161

申请日：2015-07-08

Applicant: Toshiba Medical Systems Corporation

Inventor： Yoshimasa Kobayashi ,  Shumpei Ohashi

IPC: H05G1/06 ,  A61B6/00 ,  H01J35/16 ,  H01J35/02

CPC classification number: A61B6/54 ,  A61B6/40 ,  A61B6/4441 ,  A61B6/4452 ,  A61B6/4482 ,  A61B6/4488 ,  A61B6/487 ,  A61B6/504 ,  A61B6/5205 ,  A61B6/582 ,  H01J35/025 ,  H01J35/16 ,  H01J2235/1216 ,  H01J2235/162

Abstract: 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.

公开(公告)号：US20180061610A1

公开(公告)日：2018-03-01

申请号：US15791818

申请日：2017-10-24

Applicant: Schlumberger Technology Corporation

Inventor： Matthieu Simon ,  Anthony Durkowski ,  Christian Stoller

IPC: H01J35/02 ,  E21B47/08 ,  G01V3/30 ,  G01V3/12 ,  G01N23/20 ,  E21B47/01

CPC classification number: H01J35/025 ,  E21B47/011 ,  E21B47/082 ,  E21B47/1015 ,  E21B49/00 ,  G01N9/24 ,  G01N23/20008 ,  G01N2035/00306 ,  G01N2201/0227 ,  G01N2223/05 ,  G01N2223/204 ,  G01N2223/30 ,  G01V3/12 ,  G01V3/30 ,  G01V5/0008 ,  G01V5/04 ,  G01V5/12 ,  H01J3/023 ,  H01J37/061 ,  H01J43/04 ,  H02M7/103 ,  H05G1/10 ,  H05H3/06 ,  H05H5/045 ,  Y10T29/41 ,  Y10T29/49117

Abstract: A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.

公开(公告)号：US20180033580A1

公开(公告)日：2018-02-01

申请号：US15717388

申请日：2017-09-27

Applicant: NIKON METROLOGY NV

Inventor： Roger HADLAND

IPC: H01J35/02 ,  H01J29/48 ,  F16C35/04 ,  F16C33/76 ,  F16J15/16 ,  H05G1/12 ,  H02M7/10 ,  H01J35/10 ,  H01J35/04 ,  H01J35/16 ,  H02M1/32

CPC classification number: H01J35/025 ,  F16C33/768 ,  F16C35/042 ,  F16J15/16 ,  H01J29/48 ,  H01J35/04 ,  H01J35/06 ,  H01J35/101 ,  H01J35/106 ,  H01J35/108 ,  H01J35/16 ,  H01J37/065 ,  H01J2235/0236 ,  H01J2235/083 ,  H01J2235/086 ,  H01J2235/087 ,  H01J2235/1046 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/20 ,  H01J2237/2482 ,  H02M1/32 ,  H02M7/106 ,  H05G1/12

Abstract: 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.

公开(公告)号：US09865424B2

公开(公告)日：2018-01-09

申请号：US14642736

申请日：2015-03-09

Applicant: System Square Inc.

Inventor： Noriaki Ikeda ,  Kazunori Yamada

IPC: G01N23/00 ,  H01J35/16 ,  G01N23/04 ,  G01V5/00 ,  H01J35/02 ,  H05G1/02

CPC classification number: H01J35/16 ,  G01N23/04 ,  G01N2223/652 ,  G01V5/0016 ,  H01J35/025 ,  H01J2235/127 ,  H05G1/025

Abstract: An X-ray inspection system of the present application is capable of blocking the effect of heat from an X-ray source, thereby making it possible to place a heat-sensitive circuit component in the same housing space as the X-ray source. The X-ray inspection system includes a housing 10 provided with an upper housing space 11, in which an X-ray source 32 housed in a cooling container 30 is placed. Due to pressure of a pump 36, a cooling medium circulates between the cooling container 30 and a heat radiating device 33, thereby suppressing the temperature rise of the cooling container 30. Since the cooling container 30 is placed in the upper housing space 11, the upper housing space 11 serves as a cooling space, suppressing the temperature rise. Therefore, heat-sensitive or heat-producing circuit components can be placed in the upper housing space 11.

公开(公告)号：US09679737B2

公开(公告)日：2017-06-13

申请号：US14407163

申请日：2012-06-14

Applicant: Oliver Heid ,  Timothy Hughes ,  Jennifer Sirtl

Inventor： Oliver Heid ,  Timothy Hughes ,  Jennifer Sirtl

IPC: H05G2/00 ,  H01J35/22 ,  H01J35/02 ,  H05G1/08

CPC classification number: H01J35/22 ,  H01J35/025 ,  H05G1/08

Abstract: A spark gap comprising a cathode and an anode is provided. The spark gap is divided into two partial spark gaps by means of a central piece, namely a high-pressure spark gap and an effective spark gap. The effective spark gap can for example, be used to generate monochromatic x-rays. In order to guarantee a defined switching time, the high pressure spark gap which is initially switched to defined, is used. The switching initiates a potential so high on the centre piece that, when the high pressure spark gap is switched, the effective spark gap can also be switched in a defined manner without significant delays, to a visibly higher voltage.

公开(公告)号：US09570264B2

公开(公告)日：2017-02-14

申请号：US14241417

申请日：2012-08-29

Applicant: Takao Ogura ,  Yasue Sato

Inventor： Takao Ogura ,  Yasue Sato

IPC: H01J35/02 ,  H01J35/08 ,  G01N23/04 ,  H01J35/14

CPC classification number: H01J35/02 ,  G01N23/04 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/087 ,  H01J2235/186

Abstract: Provided is an X-ray generator which includes:an electron path 8; a target 9c disposed on a substrate 9a, in which electrons having passed through the electron path 8 are made to emit at the target 9c and to generate an X-ray, wherein: the target 9c is disposed at the central area of the substrate 9a; at least a part of a peripheral area of the substrate 9a which is not covered with the target 9c has higher transmittance than that of the central area of the substrate 9a covered with the target 9c, with respect to the X-ray generated when electrons having reflected from the target enter an inner wall of the electron path. X-ray generation efficiency may be improved by effectively using electrons reflected off the target 9c.

Abstract translation: 电子通路8; 设置在基板9a上的目标9c，其中通过电子通道8的电子在靶9c处发射并产生X射线，其中：靶9c设置在基板9a的中心区域 ; 基板9a的未被靶9c覆盖的周边区域的至少一部分相对于被靶9c覆盖的基板9a的中心区域的透射率的透射率高于电子具有的X射线 从目标反射进入电子通道的内壁。 可以通过有效地使用从靶9c反射的电子来提高X射线产生效率。

公开(公告)号：US09530607B2

公开(公告)日：2016-12-27

申请号：US14457385

申请日：2014-08-12

Applicant: EXCILLUM AB

Inventor： Oscar Hemberg ,  Tomi Tuohimaa ,  Mikael Otendal

IPC: H01J35/02 ,  H01J35/08 ,  G03F7/20 ,  H01J35/12 ,  H05G2/00

CPC classification number: H01J35/08 ,  G03F7/70033 ,  H01J35/12 ,  H01J2235/082 ,  H01J2235/1204 ,  H01J2235/1279 ,  H05G2/003 ,  H05G2/008

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

Abstract translation: 提出了用于将液体金属提供到电子束将冲击液态金属以产生X射线的相互作用区域的闭环循环。 在一种方法中，使用高压泵将液态金属的压力提高至至少10巴。 然后将加压液体金属传导到喷嘴并以空间连续射流的形式喷射到真空室中。 在通过真空室之后，将液态金属收集在收集容器中，并且将液态金属的压力升高到入口压力，例如， 使用底漆泵，适用于高压泵的入口。 另外，具有这样的循环系统的相应的循环系统和X射线源。

公开(公告)号：US20160262250A1

公开(公告)日：2016-09-08

申请号：US15156990

申请日：2016-05-17

Applicant: General Electric Company

Inventor： Saijun MAO ,  Denis Perrillat-Amede ,  Philippe Ernest ,  Niranjan Kumar ,  Xu Chu

IPC: H05G1/12 ,  H01J35/02 ,  H02M7/10

CPC classification number: H05G1/12 ,  H02M5/12 ,  H02M7/103 ,  H02M7/106 ,  H02M2001/007

Abstract: A power generation system includes an input to receive a low-voltage alternating current and a number N of voltage-conversion modules coupled to the input, each electrically connected in series. Each voltage-conversion module includes a transformer configured to convert the low-voltage alternating current into a high voltage alternating current. Each voltage-conversion module includes a multiplier configured to convert the high-voltage alternating current from the transformer into a high-voltage direct current. The multiplier includes a positive multiplier part and a negative multiplier part. The positive multiplier part and the negative multiplier part each includes a. pair of input terminals connected in parallel with the transform and at least one multiplier stage comprising a single diode and a capacitor assembly. The number N is an even number between 4 and 24.

Abstract translation: 发电系统包括用于接收低电压交流电的输入和耦合到输入的数个N个电压转换模块，每个电压转换模块串联电连接。 每个电压转换模块包括被配置为将低压交流电转换成高压交流电的变压器。 每个电压转换模块包括被配置为将来自变压器的高压交流电转换成高压直流电的乘法器。 乘法器包括正乘数和负乘数。 正乘数部分和负乘数部分均包括a。 与变换并联连接的一对输入端子以及包括单个二极管和电容器组件的至少一个乘法器级。 数字N是4到24之间的偶数。

公开(公告)号：US20160260572A1

公开(公告)日：2016-09-08

申请号：US15156895

申请日：2016-05-17

Applicant: American Science and Engineering, Inc.

Inventor： Dan-Cristian Dinca ,  Martin Rommel

IPC: H01J35/02 ,  G01V5/00 ,  G01N23/04

CPC classification number: H01J35/02 ,  G01N23/04 ,  G01V5/0016

Abstract: Methods and an x-ray system for dynamically regulating x-ray dose. An x-ray beam is generated and collimated at a source collimator and detected after the x-ray beam traverses an inspected object. A filter may be dynamically interposed by translation of the filter between a focal spot of the source and the source collimator in such a manner as to maintain the portion of the x-ray beam that traverses the inspected object below a specified limit. Alternatively, an aperture of the source collimator may be varied in size or position relative to the focal spot.

Abstract translation: 方法和x射线系统，用于动态调节x射线剂量。 X射线束在源准直器处产生并准直，并在X射线束穿过检测对象之后检测。 过滤器可以通过在源的焦点和源准直仪之间平移过滤器而被动态地插入，以使得将穿过检测对象的X射线束的部分保持在指定极限以下。 或者，源准直仪的孔径可以在相对于焦斑的尺寸或位置上变化。

公开(公告)号：US20160050741A1

公开(公告)日：2016-02-18

申请号：US14830435

申请日：2015-08-19

Applicant: Varian Medical Systems, Inc.

Inventor： Gongyin CHEN ,  Kenneth Todd ROMRIELL ,  David Alan HOWELL

IPC: H05H7/02 ,  H01J35/02

CPC classification number: H05H7/02 ,  H01J35/025 ,  H05H2007/025

Abstract: A method of operating an acceleration system comprises injecting charged particles into an RF accelerator, providing RF power to the accelerator, and accelerating the injected charged particles. The accelerated charged particles may impact a target to generate radiation. The RF power is based, at least in part, on past performance of the system, to compensate, at least partially, for dose and/or energy instability. A controller may provide a compensated control voltage (“CCV”) to an electric power source based on the past performance, to provide compensated electric power to the RF source. A decreasing CCV, such as an exponentially decreasing CCV, may be provided to the electric power source during beam on time periods. The CCV to be provided may be increased, such as exponentially increased toward a maximum value, during beam off time periods. The controller may be configured by a compensation circuit and/or software. Systems are also described.

Abstract translation: 操作加速系统的方法包括将带电粒子注入RF加速器，向加速器提供RF功率，并加速注入的带电粒子。 加速带电粒子可能会影响目标产生辐射。 RF功率至少部分地基于系统的过去性能，至少部分地补偿剂量和/或能量不稳定性。 控制器可以基于过去的性能向电源提供补偿的控制电压（“CCV”），以向RF源提供补偿的电力。 在光束接通时间段期间，可以向电源提供减小的CCV，例如指数下降的CCV。 在光束关闭时间段期间，要提供的CCV可以增加，例如朝着最大值指数增加。 控制器可以由补偿电路和/或软件来配置。 还描述了系统。