公开(公告)号：US20190122781A1

公开(公告)日：2019-04-25

申请号：US16166042

申请日：2018-10-19

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： 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: G21G4/02 ,  G01N23/00 ,  H05H6/00

Abstract: 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.

公开(公告)号：US20190170894A1

公开(公告)日：2019-06-06

申请号：US16253221

申请日：2019-01-22

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

IPC: G01V5/00 ,  G01T1/29 ,  G01N23/04

Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. The scanning method includes 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.

公开(公告)号：US20160103241A1

公开(公告)日：2016-04-14

申请号：US14892640

申请日：2014-01-17

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Jianmin LI ,  Ying LI ,  Yuanjing LI ,  Wei YIN ,  Juan ZHENG ,  Lei ZENG

IPC: G01V5/00

CPC classification number: G01V5/0041 ,  G01V5/0025

Abstract: The disclosure provides a multi-power multi-dosage accelerator. The multi-power multi-dosage accelerator comprises an electron gun configured to provide a first voltage of the electron gun and a second voltage of the electron gun, and an accelerating tube configured to generate a first X-ray having a first dosage and first power according to the first voltage of the electron gun and generate a second X-ray having a second dosage and second power according to the second voltage of the electron gun, wherein the first dosage is a dosage which can be accepted by human bodies and is much less than the second dosage, the first X-ray is used for inspecting a first area where a person is located, and the second X-ray is used for inspecting a second area where goods are located.

Abstract translation: 本公开提供了一种多功率多剂量加速器。 多功率多剂量促进剂包括电子枪，其被配置为提供电子枪的第一电压和电子枪的第二电压;以及加速管，被配置为产生具有第一剂量和第一功率的第一X射线 根据电子枪的第一电压，根据电子枪的第二电压生成具有第二剂量和第二功率的第二X射线，其中第一剂量是可被人体接受的剂量， 小于第二剂量时，第一X射线用于检查人的第一区域，并且第二X射线用于检查货物所在的第二区域。

公开(公告)号：US20240379258A1

公开(公告)日：2024-11-14

申请号：US18690081

申请日：2022-07-22

Applicant: NUCTECH COMPANY LIMITED

Inventor： Yaohong LIU ,  Wei YIN ,  Yumei CHEN ,  Weiqiang GUAN ,  Weike LI

IPC: G21K1/04 ,  G01N23/06

Abstract: Provided are a ray collimation device and a radiation inspection device. The ray collimation device includes a collimation assembly, a transmission assembly, and a driving assembly. The collimation assembly includes a first collimation block and a second collimation block. A collimation opening for collimating rays is provided between the first collimation block and the second collimation block. The transmission assembly includes a first transmission component and a second transmission component connected in a transmission manner, the second transmission component is connected to the driving assembly, and the first transmission component is connected to the first collimation block and the second collimation block. Under a drive of the driving assembly, the first transmission component is movable to drive the first collimation block and the second collimation block to move toward or away from each other at a same speed, thereby adjusting a width of the collimation opening.

公开(公告)号：US20210204390A1

公开(公告)日：2021-07-01

申请号：US17247800

申请日：2020-12-23

Applicant: NUCTECH COMPANY LIMITED

Inventor： Yaohong LIU ,  Jinsheng LIU ,  Wei JIA ,  Wei YIN ,  Feng GAO ,  Xiying LIU ,  Haokun WANG

IPC: H05H9/04 ,  H05H7/02

Abstract: Embodiments of the disclosed technology provide an apparatus for controlling a standing wave linear accelerator. An example standing wave linear accelerator includes an accelerating tube, a motor, and a microwave power source connected between the accelerating tube and the motor. An example apparatus includes a main processor configured to receive an envelope signal of a reflected wave signal output by the accelerating tube, determine whether an amplitude of the envelope signal is greater than an envelope threshold, and if it is determined that the amplitude of the envelope signal is less than the envelope threshold, determine whether to change a rotation direction of the motor by comparing the amplitude of the envelope signal with an envelope reference signal stored in a memory. The memory is connected to the main processor and is configured to store the envelope threshold and the envelope reference signal.