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1. 发明申请

US20190122781A1 PHOTONEUTRON SOURCE AND NEUTRON INSPECTION SYSTEM 审中-公开
公开(公告)号：US20190122781A1
公开(公告)日：2019-04-25
申请号：US16166042
申请日：2018-10-19
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Yigang YANG , Jianmin LI , Dongyu WANG , Hao YU , Weizhen WANG , Weiqiang GUAN , Wei YIN , Wei LI , Quanwei SONG , Yulan LI , Chunguang ZONG , Yaohong LIU , Yuanjing LI , Zhiqiang CHEN , Li ZHANG
IPC分类号： G21G4/02 , G01N23/00 , H05H6/00
摘要： The present disclosure discloses a photoneutron source and a neutron inspection system. The photoneutron source comprises: an electron accelerating tube for accelerating an electron beam; an X-ray converting target, and the electron beam accelerated by the electron accelerating tube bombards the X-ray converting target to generate X-rays; a photoneutron target, and the X-rays enters the photoneutron target to generates photoneutrons; and a neutron modulation housing provided outside the photoneutron target, and the neutron modulation housing comprises a neutron collimation port for outputting photoneutrons. The present disclosure may directly output a desired neutron beam from the neutron collimation port of the photoneutron source.

2. 发明申请

US20200025968A1 RADIATION INSPECTION SYSTEM AND RADIATION INSPECTION METHOD 审中-公开
公开(公告)号：US20200025968A1
公开(公告)日：2020-01-23
申请号：US16232058
申请日：2018-12-26
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Yigang YANG , Dongyu Wang , Hao Yu , Quanwei Song , Jianmin Li , Weizhen Wang , Yulan Li , Chunguang Zong , Qinjian Zhang , Ming Zeng , Zhiqiang Chen , Yuanjing Li , Li Zhang
IPC分类号： G01V5/00 , G01N23/20
摘要： The present disclosure discloses a radiation inspection system and a radiation inspection method. The radiation inspection system comprises a radiation source and a beam modulating device. The beam modulating device comprises a first collimating structure disposed at a beam exit side of the radiation source and a second collimating structure disposed at a beam exit side of the first collimating structure. The second collimating structure is movable relative to the first collimating structure to change a relative position of the first collimating port of the first collimating structure with the second collimating port of the second collimating structure, and the beam modulating device is shifted between a first operational state in which the beam modulating device modulates an initial beam into a fan beam, and a second operational state in which the beam modulating device modulates the initial beam into a pencil beam variable in position.

3. 发明申请

US20210333224A1 DUAL MODE DETECTION METHOD, CONTROLLER AND SYSTEM 有权
公开(公告)号：US20210333224A1
公开(公告)日：2021-10-28
申请号：US16626572
申请日：2019-05-29
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Yigang YANG , Xuewu WANG , Zhi ZHANG , Yuanjing LI , Jianmin LI
IPC分类号： G01N23/09 , G01N23/02 , G01N23/05 , G01N23/083
摘要： The present disclosure provides a dual mode detection method, controller and system, which relates to the technical field of radiation detection. The dual mode detection method of the present disclosure includes: determining a ratio of neutron to X-ray differential cross sections of an inspected object, according to X-ray object detection data, X-ray object-free detection data, neutron object detection data, and neutron object-free detection data; determining a substance type of the inspected object according to a correspondence between the ratio of neutron to X-ray differential cross sections of the inspected object and the substance type.

4. 发明申请

US20170184735A1 SLOW NEUTRON CONVERSION BODY AND SLOW NEUTRON DETECTOR 审中-公开
公开(公告)号：US20170184735A1
公开(公告)日：2017-06-29
申请号：US15280106
申请日：2016-09-29
申请人： TSINGHUA UNIVERSITY , Nuctech Company Limited
发明人： Yigang YANG , Yuanjing LI , Zhujun FANG , Yulan LI
IPC分类号： G01T3/00
CPC分类号： G01T3/008 , G01T3/00
摘要： The present application, pertaining to the field of slow neutron detection, relates to a slow neutron converter and a slow neutron detector. The slow neutron converter includes a substrate, the substrate including a plurality of holes extending along a first direction and insulating walls between the plurality of holes, wherein the plurality of holes are through holes. The slow neutron converter further includes a boron layer at least covering an exposed surface of the plurality of holes. The slow neutron converter and the slow neutron detector having the slow neutron converter according to the present disclosure are capable of maintaining a high slow neutron detection efficiency. In addition, the manufacturing complexity and manufacturing cost of the detector are reduced, and thus the effective, convenient and low-cost slow neutron detection is achieved.

5. 发明申请

US20150185164A1 NUCLIDE IDENTIFICATION METHOD, NUCLIDE IDENTIFICATION SYSTEM, AND PHOTONEUTRON EMITTER 有权
标题翻译：核素鉴定方法，核素鉴定系统和光电子发射器
公开(公告)号：US20150185164A1
公开(公告)日：2015-07-02
申请号：US14577701
申请日：2014-12-19
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Zhiqiang CHEN , Yigang YANG , Xuewu WANG , Qinjian ZHANG , Huaibi CHEN , Yuanjing LI
IPC分类号： G01N23/00 , G21G4/02
CPC分类号： G01N23/005 , G01V5/0091 , G21G4/02
摘要： 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.
摘要翻译：本发明的实施例公开了核素识别方法，核素鉴定系统和光子中子发射体。光子中子发射体包括：配置用于发射电子的脉冲电子加速器; 以及被配置为接收由脉冲电子加速器发射的电子并将电子转换成光子酮的光子中子转换目标。光子中子转化靶具有约100至约8000cm 3，约100至约2500cm 3或约785cm 3的体积。本发明的这些实施方案可以提高核素的鉴定精度，并提供实用的光子中子发射体，用于识别核素的方法和系统。特别地，本发明的这些实施例可以提高诸如233U，235U和239Pu之类的裂变核素的鉴定准确度，并提供一种实用的光子中子发射体，用于识别易裂变核素的方法和系统，例如233U，235U和239Pu 。

6. 发明申请

US20160091440A1 METHOD AND DEVICE FOR IMAGING AN OBJECT THROUGH PHOTONEUTRON TRANSMISSION 审中-公开
标题翻译：通过光电传输成像对象的方法和装置
公开(公告)号：US20160091440A1
公开(公告)日：2016-03-31
申请号：US14866727
申请日：2015-09-25
申请人： Nuctech Company Limited
发明人： Yigang YANG , Qinjian Zhang , Yuanjing Li , Zhi Zhang
IPC分类号： G01N23/05 , G01T3/06
CPC分类号： G01N23/05
摘要： The application relates to a method and device for imaging an object through photoneutron transmission. The method uses photoneutron rays to transmit the object, and comprises the following steps: emitting photoneutron rays by a photoneutron source to irradiate on the object; receiving the photoneutron rays from the photoneutron source by a detector; and imaging the object based on the photoneutron rays received by the detector; wherein the detector can slow down and absorb the photoneutrons, and wherein the incidence direction of the photoneutron rays from the photoneutron source and the normal direction of the detector surface form an angle ranging from 60 degrees to 87 degrees, or from about 60 degrees to about 87 degrees.
摘要翻译：本申请涉及通过光子中子传输对物体成像的方法和装置。该方法使用光子离子射线传输物体，包括以下步骤：用光子中子源发射光子酮射线照射物体; 通过检测器接收来自光子中子源的光子中子射线; 并且基于由检测器接收的光中子射线成像物体; 其中所述检测器可以减慢和吸收所述光子酮，并且其中来自所述光子中子源的所述光中子射线和所述检测器表面的法线方向的入射方向形成从60度至87度，或约60度至约 87度。

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