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公开(公告)号：US10748731B2
公开(公告)日：2020-08-18
申请号：US15856251
申请日：2017-12-28
Applicant: TSINGHUA UNIVERSITY , Nuctech Company Limited
Inventor： Wenhui Huang , Dongsheng Zhang , Qingxiu Jin , Chengjun Tan , Donghai Liu , Qun Luo , Chuanxiang Tang
Abstract: An electron gun, an X-ray source and a CT device are provided. The electron gun includes a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion; an internal cavity is formed in the body and has an opening positioned on the second end portion; a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion.
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公开(公告)号：US09491842B2
公开(公告)日：2016-11-08
申请号：US14487960
申请日：2014-09-16
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Huaibi Chen , Jianping Cheng , Shuxin Zheng , Jiaru Shi , Chuanxiang Tang , Qingxiu Jin , Wenhui Huang , Yuzheng Lin , Dechun Tong , Shi Wang
CPC classification number: H05H9/04 , H05H9/048 , H05H2007/027
Abstract: The present disclosure discloses a method for controlling a standing wave accelerator and a system thereof. The method comprises: generating, by an electron gun, an electron beam; injecting the electron beam into an accelerating tube; and controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes at a predetermined frequency to generate electron beams with corresponding energy. According to the above solution, it only needs to change the output frequency of the microwave power source in the process of adjusting energy, without making any change to the accelerating structure per se. Therefore, the method is easy to operate. In addition, the structure of the accelerating tube in the above system is simple, without adding a particular regulation apparatus.
Abstract translation: 本公开公开了一种用于控制驻波加速器及其系统的方法。 该方法包括：通过电子枪产生电子束; 将电子束注入加速管中; 并且控制微波功率源以将不同频率的微波产生并输入到加速管中，使得加速管以预定频率在不同谐振模之间切换以产生具有相应能量的电子束。 根据上述方案，只需要在调节能量的过程中改变微波功率源的输出频率，而不会对加速结构本身造成任何变化。 因此，该方法易于操作。 此外，上述系统中的加速管的结构简单，而不添加特定的调节装置。
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公开(公告)号：US11170966B2
公开(公告)日：2021-11-09
申请号：US16627515
申请日：2018-05-29
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
Abstract: A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.
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公开(公告)号：US10818464B2
公开(公告)日：2020-10-27
申请号：US16728783
申请日：2019-12-27
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Wenhui Huang , Qingxiu Jin , Cong Xu , Luming Zhang , Donghai Liu , Cheng Song , Peidong Wu , Qun Luo , Chengjun Tan , Shuo Wang
IPC: H01J3/02
Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.
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公开(公告)号：US11456146B2
公开(公告)日：2022-09-27
申请号：US16627531
申请日：2018-09-13
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
Abstract: An anode target, a ray light source, a computed tomography device, and an imaging method, which relate to the technical field of ray processing. The anode target comprises a first anode target, a second anode target, and a ceramic plate. The first anode target is used for enabling, by means of a first voltage carried on the first anode target, an electron beam emitted by a cathode to generate a first ray on a target spot of the first anode target. The second anode target is used for enabling, by means of a second voltage carried on the second anode target, an electron beam emitted by the cathode to generate a second tray on a target spot of the second anode. The ceramic plate is used for isolating the first anode target from the second anode target. By means of the anode target, the ray light source, the computed tomography device and the imaging method, dual-energy distributed ray imaging data can be provided and the imaging quality of a ray system can be improved.
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Patent Agency Ranking
公开(公告)号：US11330695B2
公开(公告)日：2022-05-10
申请号：US16931261
申请日：2020-07-16
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Chengjun Tan , Wenhui Huang , Qingxiu Jin , Chuanxiang Tang , Donghai Liu , Qun Luo , Peidong Wu , Cheng Song , Yunze Ding , Cong Xu , Luming Zhang , Shuo Wang
Abstract: An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.
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公开(公告)号：US11315750B2
公开(公告)日：2022-04-26
申请号：US16627527
申请日：2018-06-01
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
Abstract: An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.
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公开(公告)号：US11201030B2
公开(公告)日：2021-12-14
申请号：US16627515
申请日：2018-05-29
Applicant: Nuctech Company Limited , TSINGHUA UNIVERSITY
Inventor： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
Abstract: A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.
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公开(公告)号：US20210084739A1
公开(公告)日：2021-03-18
申请号：US16931261
申请日：2020-07-16
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Chengjun Tan , Wenhui Huang , Qingxiu Jin , Chuanxiang Tang , Donghai Liu , Qun Luo , Peidong Wu , Cheng Song , Yunze Ding , Cong Xu , Luming Zhang , Shuo Wang
Abstract: An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.
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公开(公告)号：US20200211806A1
公开(公告)日：2020-07-02
申请号：US16728783
申请日：2019-12-27
Applicant: Nuctech Company Limited , Tsinghua University
Inventor： Wenhui Huang , Qingxiu Jin , Cong Xu , Luming Zhang , Donghai Liu , Cheng Song , Peidong Wu , Qun Luo , Chengjun Tan , Shuo Wang
IPC: H01J3/02
Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.
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