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公开(公告)号：US10020157B2
公开(公告)日：2018-07-10
申请号：US15717364
申请日：2017-09-27
申请人： NIKON METROLOGY NV
发明人： Roger Hadland
IPC分类号： H01J35/10 , H01J35/02 , H01J29/48 , F16C33/76 , H02M1/32 , H05G1/12 , H02M7/10 , H01J35/04 , F16J15/16 , H01J35/16 , F16C35/04
CPC分类号： H01J35/025 , F16C33/768 , F16C35/042 , F16J15/16 , H01J29/48 , H01J35/04 , H01J35/06 , H01J35/101 , H01J35/106 , H01J35/108 , H01J35/116 , H01J35/16 , H01J37/065 , H01J2235/0236 , H01J2235/083 , H01J2235/086 , H01J2235/1046 , H01J2235/1204 , H01J2235/1262 , H01J2235/20 , H01J2237/2482 , H02M1/32 , H02M7/106 , H05G1/12
摘要： 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 computerized tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.
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公开(公告)号：US09953799B2
公开(公告)日：2018-04-24
申请号：US14668029
申请日：2015-03-25
发明人： Fumihiko Hakoda , Satoshi Takahashi , Jim Smith
CPC分类号： H01J35/16 , B22D46/00 , G01N23/02 , G01N23/04 , G21K7/00 , H01J9/42 , H01J35/04 , H01J35/045 , H01J2235/163 , H05G1/02
摘要： Provided is an X-ray apparatus including: a target configured to generate an X-ray by collision of electrons or transmission of electrons; a filament configured to release the electrons to the target; a housing that has the filament therein; and a first holding member configured to hold a portion of the target disposed on an outer side of the housing on the outer side of the housing.
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83.发明申请公开(公告)号：US20180033581A1
公开(公告)日：2018-02-01
申请号：US15717393
申请日：2017-09-27
申请人： NIKON METROLOGY NV
发明人： Roger HADLAND
IPC分类号： H01J35/02 , H01J29/48 , F16C35/04 , F16C33/76 , F16J15/16 , H05G1/12 , H02M7/10 , H01J35/10 , H01J35/04 , H01J35/16 , H02M1/32
CPC分类号： 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
摘要： Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.
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公开(公告)号：US09793084B2
公开(公告)日：2017-10-17
申请号：US13232166
申请日：2011-09-14
申请人： Jani Reijonen , Joel Lee Groves
发明人： Jani Reijonen , Joel Lee Groves
CPC分类号： H01J35/04 , H01J35/16 , H01J2235/02 , H01J2235/06 , H01J2235/086 , H01J2235/165 , H01J2235/20 , H05G1/06 , H05H3/06
摘要： Systems, methods, and devices with improved electrode configuration for downhole nuclear radiation generators are provided. For example, one embodiment of a nuclear radiation generator capable of downhole operation may include a charged particle source, a target material, and an acceleration column between the charged particle source and the target material. The acceleration column may include an intermediate electrode that remains floating at a variable potential, being electrically isolated from the rest of the acceleration column.
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85.发明申请公开(公告)号：US20170287668A1
公开(公告)日：2017-10-05
申请号：US15432272
申请日：2017-02-14
发明人： Yoshihiro Yanagisawa
CPC分类号： H01J35/045 , H01J35/06 , H01J35/08 , H01J35/116 , H01J2235/1258 , H05G1/30
摘要： Provided is an X-ray generating tube including an electron gun, which includes a grid electrode secured to a support member. In the X-ray generating tube, thermal stress generated at a joining portion between the support member and the grid electrode is reduced, to thereby maintain a position of an electron beam on a target irradiated with the electron beam accurately for a long time. A grid electrode and a support member are secured to each other via a buffer member, which has an elastic coefficient that is lower than elastic coefficients of the grid electrode and the support member, and which is joined to the grid electrode and the support member through a first joining portion on the grid electrode side and a second joining portion on the support member side, respectively.
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86.发明授权公开(公告)号：US09412552B2
公开(公告)日：2016-08-09
申请号：US14337590
申请日：2014-07-22
发明人： Shuji Aoki , Kazuyuki Ueda
CPC分类号： H01J35/045 , G01N23/04 , H01J35/06 , H01J35/065 , H01J35/08 , H01J35/16 , H01J2235/164
摘要： In a multi-source radiation generating apparatus including a plurality of combinations of a cathode and a target, an extraction electrode is disposed for a plurality of cathodes in common. When a potential of the extraction electrode is constant, potentials for the cathodes are selectively switched between a cutoff potential which is higher than the potential of the extraction electrode and an emission potential which is lower than the potential of the extraction electrode.
摘要翻译： 在包括阴极和靶的多个组合的多源辐射发生装置中，为多个阴极共同设置引出电极。 当提取电极的电位恒定时，阴极的电位在高于引出电极的电位的截止电位和低于引出电极的电位的发射电位之间选择性地切换。
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公开(公告)号：US20160189908A1
公开(公告)日：2016-06-30
申请号：US14586066
申请日：2014-12-30
发明人： Sergio Lemaitre
CPC分类号： H01J35/06 , H01J3/38 , H01J19/10 , H01J19/48 , H01J37/063 , H01J2229/4844 , H01J2229/4896 , H01J2235/06
摘要： In the present invention, a cathode for an x-ray tube is formed with a large area flat emitter. To reduce the aberrations to a minimum the emission area in the flat emitter has a non-rectangular shape and focusing pads arranged around the emitter. In an exemplary embodiment, the flat emitter has a non-rectilinear polygonal shape for an emission area on the emitter in order to increase the emission current from the emitter at standard voltage levels without the need to run the emitters at a higher temperature, add additional emitters to the cathode and/or to coat the emitters with a low work function material.
摘要翻译： 在本发明中，用于X射线管的阴极形成有大面积的平坦发射体。 为了将像差减小到最小，扁平发射器中的发射面积具有非矩形形状和围绕发射极布置的聚焦焊盘。 在示例性实施例中，扁平发射器具有用于发射极上的发射区域的非直线多边形形状，以便在标准电压电平下增加来自发射极的发射电流，而不需要在较高温度下运行发射器，增加额外的 发射器到阴极和/或用低功函数材料涂覆发射器。
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88.发明授权X-ray tomographic inspection system for the identification of specific target items 有权用于识别特定目标物品的X射线断层摄影检查系统公开(公告)号：US09158030B2
公开(公告)日：2015-10-13
申请号：US14508464
申请日：2014-10-07
发明人： Edward James Morton
CPC分类号： G01V5/0033 , A61B6/027 , A61B6/032 , A61B6/4028 , A61B6/4035 , A61B6/4241 , A61B6/4488 , A61B6/482 , A61B6/505 , G01N23/04 , G01N23/046 , G01N23/203 , G01N24/084 , G01N2223/419 , G01V5/005 , G21K1/025 , H01J35/045
摘要： The present invention provides for an improved scanning process with a stationary X-ray source arranged to generate X-rays from a plurality of X-ray source positions around a scanning region, a first set of detectors arranged to detect X-rays transmitted through the scanning region, and at least one processor arranged to process outputs from the first set of detectors to generate tomographic image data. The X-ray screening system is used in combination with other screening technologies, such as NQR-based screening, X-ray diffraction based screening, X-ray back-scatter based screening, or Trace Detection based screening.
摘要翻译： 本发明提供了一种改进的扫描过程，其中固定的X射线源设置成从围绕扫描区域的多个X射线源位置产生X射线，第一组检测器布置成检测透过扫描区域的X射线 扫描区域和至少一个处理器，其被布置成处理来自第一组检测器的输出以产生断层图像数据。 X射线筛选系统与其他筛选技术结合使用，例如基于NQR筛选，基于X射线衍射的筛选，基于X射线背散射筛选或基于Trace Detection的筛选。
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公开(公告)号：US09155185B2
公开(公告)日：2015-10-06
申请号：US12618821
申请日：2009-11-16
CPC分类号： H05H3/06 , G01V5/10 , G21G1/10 , H01J35/04 , H01J35/16 , H01J2235/02 , H01J2235/06 , H01J2235/086 , H01J2235/165 , H01J2235/20
摘要： Systems, methods, and devices with improved electrode configuration for downhole nuclear radiation generators are provided. For example, one embodiment of a nuclear radiation generator capable of downhole operation may include a charged particle source, a target material, and an acceleration column between the charged particle source and the target material. The acceleration column may include several electrodes shaped such that substantially no electrode material from the electrodes is sputtered onto an insulator surface of the acceleration column during normal downhole operation.
摘要翻译： 提供了用于井下核辐射发生器的具有改进的电极配置的系统，方法和装置。 例如，能够进行井下操作的核辐射发生器的一个实施例可以包括带电粒子源，目标材料和带电粒子源与目标材料之间的加速柱。 加速柱可以包括几个电极，其形状使得在正常的井下操作期间基本上没有电极的电极材料溅射到加速柱的绝缘体表面上。
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90.发明申请TRANSMITTING-TYPE TARGET AND X-RAY GENERATION TUBE PROVIDED WITH TRANSMITTING-TYPE TARGET 有权发射型目标和X射线发生管提供发射型目标公开(公告)号：US20150162161A1
公开(公告)日：2015-06-11
申请号：US14559807
申请日：2014-12-03
CPC分类号： H01J35/08 , C23C16/01 , C23C16/27 , G01N23/04 , H01J35/045 , H01J2235/02 , H01J2235/081 , H01J2235/084 , H01J2235/087 , H01J2235/186
摘要： A transmissive-type target includes a target layer, and a transmissive substrate configured to support the target layer. The transmissive substrate has a pair of surfaces facing each other and is formed of polycrystalline diamond. In the transmissive substrate, one of the pair of surfaces includes polycrystalline diamond having a first average crystal grain diameter which is smaller than a second average crystal grain diameter of polycrystalline diamond included on the other surface opposing thereto. The target layer is supported by any one of the pair of surfaces.
摘要翻译： 透射型靶包括目标层和被配置为支撑目标层的透射基板。 透射基板具有彼此面对的一对表面，并且由多晶金刚石形成。 在透射基板中，一对表面中的一个表面包括具有第一平均晶粒直径的多晶金刚石，其小于与其相对的另一表面所包含的多晶金刚石的第二平均晶粒直径。 目标层由一对表面中的任何一个支撑。
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