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公开(公告)号：US20150078511A1
公开(公告)日：2015-03-19
申请号：US14490509
申请日：2014-09-18
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Chuanxiang TANG , Huaping TANG , Huaibi CHEN , Wenhui HUANG , Huayi ZHANG , Shuxin ZHENG , Yaohong LIU , Jinsheng LIU
CPC classification number: H01J35/045 , G01N23/046 , H01J35/06 , H01J35/065 , H01J35/10 , H01J35/14 , H01J35/16 , H01J2235/087
Abstract: A x-ray apparatus of the present application comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the wall at one end within the vacuum box, each electron transmitting unit is independent to each other; the electron transmitting unit having: a heating filament; a cathode connected to the heating filament; a grid arranged above the cathode opposing the cathode; anode made of metal and installed at the other end of the vacuum box, and in the direction of length, the anode is parallel to the plane of the grid of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the grid of the electron transmitting unit.
Abstract translation: 本申请的X射线装置包括：真空箱，其外周密封，其内部为高真空; 多个电子传输单元，其布置成直线阵列，并且一端安装在真空箱内的壁上，每个电子传输单元彼此独立; 电子发射单元具有：加热丝; 连接到加热丝的阴极; 布置在与阴极相对的阴极上方的栅极; 阳极由金属制成并安装在真空箱的另一端，并且在长度方向上，阳极平行于电子发射单元的栅格平面，并且在宽度方向上，阳极具有预定的 相对于电子发送单元的格栅的平面的角度。
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Patent Agency Ranking
公开(公告)号：US20170365440A1
公开(公告)日：2017-12-21
申请号：US15696919
申请日：2017-09-06
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Yuanjing LI , Yaohong LIU , Jinsheng LIU , Huaping TANG , Chuanxiang TANG , Huaibi CHEN , Xinshui YAN
CPC classification number: H01J35/14 , H01J35/16 , H01J35/30 , H01J2235/16
Abstract: An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.
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公开(公告)号：US20150078509A1
公开(公告)日：2015-03-19
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 comprises: a vacuum box which is sealed at its periphery, and 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, a grid-controlled apparatus connected to each of the plurality of electron transmitting units, a control system for controlling each power supply; wherein the anode comprises: an anode plate made of metal and parallel to the upper surface of the electron transmitting unit; a plurality of targets arranged on the anode plate and disposed corresponding to the positions of the electron transmitting unit, the bottom surface of the target is connected to the anode plate and the upper surface of the target has a predetermined angle with the anode plate.
Abstract translation: 本公开的二维阵列分布式X射线装置包括：真空箱，其外围密封，其内部为高真空; 多个电子发射单元，其布置在真空箱壁上的二维阵列的一个平面中; 具有与多个电子发射单元相对应的靶的阳极，该多个电子发射单元与真空箱中的多个电子发射单元的平面平行布置; 具有连接到阳极的高压电源的电源和控制系统，连接到多个电子发射单元中的每一个的灯丝电源，连接到多个电子发射单元中的每一个的电网控制装置， 用于控制每个电源的控制系统; 其中所述阳极包括：由金属制成并平行于所述电子发射单元的上表面的阳极板; 布置在阳极板上并对应于电子发射单元的位置设置的多个靶，靶的底表面连接到阳极板，靶的上表面与阳极板具有预定的角度。
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4.发明申请公开(公告)号：US20200253033A1
公开(公告)日：2020-08-06
申请号：US16727639
申请日：2019-12-26
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED , NuRay Technology Co., Ltd
Inventor： Yuanjing LI , Yaohong LIU , Huaping TANG , Jinsheng LIU , Xiying LIU , Zhanfeng QIN , Wei JIA , Jinsong PAN
Abstract: Embodiments of the present disclosure disclose a multi-output high-voltage power supply including a channel selection circuit (103) including a plurality of switches; and a high-voltage power supply module (101) connected to the channel selection circuit (103), wherein the high-voltage power supply module (101) includes a fine adjusting power supply component (110) and a plurality of coarse adjusting power supply components (120-1 to 120-N) connected in series, wherein one high-voltage output terminal of the high-voltage power supply module (101) is connected to a common terminal of the channel selection circuit (103), and the other high-voltage output terminal of the high-voltage power supply module (101) is grounded through a current sampling resistor.
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公开(公告)号：US20200137868A1
公开(公告)日：2020-04-30
申请号：US16667849
申请日：2019-10-29
Applicant: NUCTECH COMPANY LIMITED
Inventor： Jinsheng LIU , Yaohong LIU , Wei JIA , Xinshui YAN , Wei LI
Abstract: The present disclosure provides a filament power supply for an electron accelerator and an electron accelerator. The filament power supply includes: a rectifier circuit configured to convert a power frequency AC voltage signal into a DC voltage signal; an inverter circuit configured to convert the DC voltage signal into an AC voltage signal; a sampling circuit configured to sample the AC voltage signal to obtain a current sampling signal or a voltage sampling signal; a pulse width modulation control chip configured to adjust a pulse width modulation signal until a voltage of the current sampling signal is equal to that of a reference current signal, or a voltage of the voltage sampling signal is equal to that of a reference voltage signal; a modulation circuit configured to modulate the power frequency AC voltage signal to obtain a modulation signal and output the pulse width modulation signal and the modulation signal.
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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
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.
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