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公开(公告)号：US20170299762A1
公开(公告)日：2017-10-19
申请号：US15289206
申请日：2016-10-10
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
Inventor： Kejun Kang , Yaohong Liu , Ziran Zhao , Wei Jia , Jianping Gu , Chuanxiang Tang , Huaibi Chen , Jianjun Gao , Wei Yin , Xiying Liu
CPC classification number: G01V5/0016 , G01N23/04 , G01T1/29
Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. Wherein, the scan method of this invention comprises: obtaining detection data of an object to be inspected under radiation scanning using a detector; adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.
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公开(公告)号：US10701787B2
公开(公告)日：2020-06-30
申请号：US16117267
申请日：2018-08-30
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Yaohong Liu , Ziran Zhao , Jinsheng Liu , Huaibi Chen , Liang Zhang , Dongsheng Zhang
Abstract: The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.
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公开(公告)号：US09714906B2
公开(公告)日：2017-07-25
申请号：US14577701
申请日：2014-12-19
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Zhiqiang Chen , Yigang Yang , Xuewu Wang , Qinjian Zhang , Huaibi Chen , Yuanjing Li
CPC classification number: G01N23/005 , G01V5/0091 , G21G4/02
Abstract: Embodiments of the present invention disclose a nuclide identification method, a nuclide identification system, and a photoneutron emitter. The photoneutron emitter comprises: a pulsed electron accelerator configured for emitting electrons; and a photoneutron converting target configured to receive the electrons emitted by the pulsed electron accelerator and convert the electrons into photoneutrons. The photoneutron converting target has a volume of about 100 to about 8000 cm3, of about 100 to about 2500 cm3, or of about 785 cm3. These embodiments of the present invention can improve an accuracy of identification of a nuclide, and provide a practical photoneutron emitter, method and system for identifying a nuclide. Especially, these embodiments of the present invention can improve an accuracy of identification of a fissile nuclide such as 233U, 235U, and 239Pu, and provide a practical photoneutron emitter, method and system for identifying a fissile nuclide such as 233U, 235U, and 239Pu.
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4.发明申请
公开(公告)号：US20150085989A1
公开(公告)日：2015-03-26
申请号：US14494178
申请日：2014-09-23
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
Inventor： Kejun Kang , Chuanxiang Tang , Huaping Tang , Huaibi Chen , Wenhui Huang
CPC classification number: H01J35/14 , A61N5/1077 , H01J35/06 , H01J35/106 , H01J2235/068 , H01J2235/086 , H01J2235/1262 , H05H7/06
Abstract: An apparatus and a method are for generating a flattening x-ray radiation field. The apparatus includes: plurality of electron accelerators for generating high-energy electron beam current; and a common target unit including a vacuum target chamber, a target and plurality of input connectors. The plurality of input connectors are connected to one side of the vacuum target chamber and the target is installed at the other side of the vacuum target chamber opposing the plurality of input connectors, the axes of which intersect in pairs at one point in an predetermined included angle. The plurality of electron accelerators are connected to the plurality of input connectors.
Abstract translation: 一种用于产生平坦的x射线辐射场的装置和方法。 该装置包括：多个用于产生高能电子束电流的电子加速器; 以及包括真空靶室，靶和多个输入连接器的公共目标单元。 多个输入连接器连接到真空靶室的一侧，并且目标件安装在真空靶室的与多个输入连接器相对的另一侧，多个输入连接器的轴线在预定的包括的一个点处成对地相交 角度。 多个电子加速器连接到多个输入连接器。
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公开(公告)号：US10224170B2
公开(公告)日：2019-03-05
申请号：US15822219
申请日：2017-11-27
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Huaping Tang , Chuanxiang Tang , Huaibi Chen
Abstract: The present invention provides an X-ray generating apparatus and an X-ray fluoroscopy imaging system comprising the same. The X-ray generating apparatus comprises: an electron accelerator, an electron emission unit, and a target; and a shielding and collimating device, including a shielding structure and multiple collimators arranged in the shielding structure, wherein the collimators are thin gaps extending from the target to an exterior surface of the shielding structure and having an axis transverse an electron beam shooting the target, and at least two collimators forming different angles with the electron beam are arranged on the same side of a plane contains the electron beam shooting the target, and the planes where the collimators locate form angles from 30 degrees to 150 degrees with the electron beam shooting the target, to draw out planar beams having different draw-out angles, each having uniform intensity distribution in its respective plane.
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公开(公告)号：US09857317B2
公开(公告)日：2018-01-02
申请号：US14582069
申请日：2014-12-23
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Huaping Tang , Zhiqiang Chen , Chuanxiang Tang , Huaibi Chen , Yuanjing Li , Ziran Zhao , Yaohong Liu , Shangmin Sun , Xinshui Yan , Zhanfeng Qin
CPC classification number: G01N23/043 , G01T7/08 , G01V5/0033 , G01V5/0041 , G01V5/005 , G21K1/025
Abstract: The X-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector X-ray beam and a second collimator for extracting a high energy planar sector X-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the X-ray beam from the first collimator; and a high energy detector array for receiving the X-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.
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公开(公告)号：US09653247B2
公开(公告)日：2017-05-16
申请号：US14490516
申请日：2014-09-18
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Huaping Tang , Chuanxiang Tang , Huaibi Chen , Wenhui Huang , Huayi Zhang , Shuxin Zheng , Jinsheng Liu
CPC classification number: H01J35/025 , G21K1/087 , H01J35/02 , H01J35/045 , H01J35/06 , H01J35/10 , H01J35/14 , H01J2235/062 , H01J2235/068 , H01J2235/086 , H01J2235/087
Abstract: A two dimensional array distributed x-ray apparatus of this disclosure includes: a vacuum box which is sealed at its periphery, where the interior thereof is high vacuum; a plurality of electron transmitting units arranged in one plane in a two dimensional array on the wall of the vacuum box; an anode having targets corresponding to the plurality electron transmitting unit arranged in parallel with the plane of the plurality of electron transmitting units in the vacuum box; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, and a grid-controlled apparatus connected to each of the plurality of electron transmitting units; and a control system for controlling each power supply.
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8.发明授权Cathode control multi-cathode distributed X-ray apparatus and CT device having said apparatus 有权具有所述装置的阴极控制多阴极分布式X射线装置和CT装置
公开(公告)号：US09585235B2
公开(公告)日：2017-02-28
申请号：US15197098
申请日：2016-06-29
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Huaping Tang , Chuanxiang Tang , Huaibi Chen
CPC classification number: H05G1/70 , H01J35/06 , H01J2235/068 , H05G1/32
Abstract: This invention relates to an apparatus producing distributed X-ray, and in particular to a cathode control multi-cathode distributed X-ray apparatus, which produces X-ray that changes focal position in a predetermined order by arranging multiple independent hot cathodes and controlling cathodes in an X-ray source device, and a CT device having said X-ray apparatus.
Abstract translation: 本发明涉及一种生产分布式X射线的装置，特别涉及一种阴极控制多阴极分布式X射线装置，该阴极控制多阴极分布式X射线装置通过排列多个独立的热阴极并控制阴极产生以预定顺序改变焦点位置的X射线 在X射线源装置中，以及具有所述X射线装置的CT装置。
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9.发明授权
公开(公告)号：US09508525B2
公开(公告)日：2016-11-29
申请号：US14494178
申请日：2014-09-23
Applicant: NUCTECH COMPANY LIMITED , Tsinghua University
Inventor： Kejun Kang , Chuanxiang Tang , Huaping Tang , Huaibi Chen , Wenhui Huang
CPC classification number: H01J35/14 , A61N5/1077 , H01J35/06 , H01J35/106 , H01J2235/068 , H01J2235/086 , H01J2235/1262 , H05H7/06
Abstract: An apparatus and a method are for generating a flattening x-ray radiation field. The apparatus includes: plurality of electron accelerators for generating high-energy electron beam current; and a common target unit including a vacuum target chamber, a target and plurality of input connectors. The plurality of input connectors are connected to one side of the vacuum target chamber and the target is installed at the other side of the vacuum target chamber opposing the plurality of input connectors, the axes of which intersect in pairs at one point in an predetermined included angle. The plurality of electron accelerators are connected to the plurality of input connectors.
Abstract translation: 一种用于产生平坦的x射线辐射场的装置和方法。 该装置包括：多个用于产生高能电子束电流的电子加速器; 以及包括真空靶室，靶和多个输入连接器的公共目标单元。 多个输入连接器连接到真空靶室的一侧，并且目标件安装在真空靶室的与多个输入连接器相对的另一侧，多个输入连接器的轴线在预定的包括的一个点处成对地相交 角度。 多个电子加速器连接到多个输入连接器。
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10.发明授权
公开(公告)号：US09426877B2
公开(公告)日：2016-08-23
申请号：US14137262
申请日：2013-12-20
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Chuanxiang Tang , Zhe Zhang , Qingxiu Jin , Jiaru Shi , Huaibi Chen , Wenhui Huang , Shuxin Zheng , Yaohong Liu
Abstract: A standing wave electron linear accelerating apparatus and a method thereof are disclosed. The apparatus comprises an electron gun configured to generate electron beams; a pulse power source configured to provide a primary pulse power signal; a power divider coupled downstream from the pulse power source and configured to divide the primary pulse power signal outputted from the pulse power source into a first pulse power signal and a second pulse power signal; a first accelerating tube configured to accelerating the electron beams with the first pulse power signal; a second accelerating tube configured to accelerate the electron beams with the second pulse power signal; a phase shifter configured to continuously adjust a phase difference between the first pulse power signal and the second pulse power signal so as to generate accelerated electron beams with continuously adjustable energy at output of the second accelerating tube.
Abstract translation: 公开了一种驻波电子线性加速装置及其方法。 该装置包括配置成产生电子束的电子枪; 脉冲电源，被配置为提供初级脉冲功率信号; 耦合到所述脉冲电源的下游并被配置为将从所述脉冲电源输出的所述主脉冲功率信号划分为第一脉冲功率信号和第二脉冲功率信号的功率分配器; 第一加速管，被配置为用第一脉冲功率信号加速电子束; 第二加速管，被配置为用所述第二脉冲功率信号加速所述电子束; 移相器，被配置为连续地调节第一脉冲功率信号和第二脉冲功率信号之间的相位差，以便在第二加速管的输出处产生具有连续可调能量的加速电子束。
