Ray generating device and control method thereof

Patent metadata

Field	Value
Publication number	US-12464632-B2
Application number	US-202218575277-A
Country	US
Kind code	B2
Filing date	Jul 5, 2022
Priority date	Jul 9, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A ray generating device and a control method thereof are provided. The ray generating device includes: an electronic beam generating device; a microwave generating device; a microwave circulator, having a power input port and at least two power output ports, the power input port being connected to the microwave generating device; a plurality of accelerating tubes respectively connected to at least two power output ports, configured to respectively receive a plurality of electronic beams, and accelerate electronic beams respectively through microwaves received from the at least two power output ports, and to respectively generate a plurality of rays having at least two different energies; and a controller, configured to perform chronological control on microwave power of the microwave generating device, and chronological control on beam loadings of the electronic beams generated by the electronic beam generating device and respectively corresponding to accelerating tubes.

First claim

What is claimed is:

1 . A ray generating device, comprising:
an electronic beam generating device, configured to generate a plurality of electronic beams; a microwave generating device, configured to generate a microwave; a microwave circulator, having a power input port and at least two power output ports, the power input port being connected to the microwave generating device through a waveguide structure; a plurality of accelerating tubes, connected to the electronic beam generating device and respectively connected to the at least two power output ports, configured to receive a plurality of electronic beams generated by the electronic beam generating device, respectively, and accelerate the plurality of electronic beams respectively through microwaves received from the at least two power output ports, so as to generate a plurality of rays having different energies, respectively; and a controller, in signal connection with the electronic beam generating device and the microwave generating device, configured to perform chronological control on microwave power of the microwave generating device, and chronological control on beam loadings of the electronic beams generated by the electronic beam generating device and respectively corresponding to the plurality of accelerating tubes.

2 . The ray generating device according to claim 1 , wherein the electronic beam generating device comprises:
a first electronic gun, configured to generate a first electronic beam; a first electronic gun power source in signal connection with the controller and connected to the first electronic gun, configured to adjust the beam loading of the first electronic beam according to a chronological control signal provided by the controller; a second electronic gun, configured to generate a second electronic beam; and a second electronic gun power source in signal connection with the controller and connected to the second electronic gun, configured to adjust a beam loading of the second electronic beam according to a chronological control signal provided by the controller, wherein the controller is configured to allow the first electronic gun power source to adjust the beam loading of the first electronic beam to be a first beam loading; at a first time period in each period of at least one period, and to allow the second electronic gun power source to adjust the beam loading of the second electronic beam to be a second beam loading at a second time period in each period, the first time period does not coincide with the second time period.

3 . The ray generating device according to claim 2 , wherein the first beam loading is less than or equal to the second beam loading.

4 . The ray generating device according to claim 2 , wherein at least two power output ports of the microwave circulator comprise a first power output port and a second power output port, the first power output is allocated with a microwave signal fed from the power input port, and the second power output port is allocated with a microwave signal fed from the first power output port; and
the plurality of accelerating tubes comprise: a first accelerating tube connected to the first power output port and the first electronic gun, configured to accelerate the first electronic beam through a first output microwave signal output by the first power output port (b); and a second accelerating tube connected to the second power output port and the second electronic gun, configured to accelerate the second electronic beam through a second output microwave signal output by the second power output port.

5 . The ray generating device according to claim 4 , wherein at least two power output ports of the microwave circulator further comprise a third power output port the third power output port is allocated with a microwave signal fed from the second power output port; and the ray generating device further comprises: an absorbing load connected to the third power output port, configured to absorb a microwave signal output by the third power output port.

6 . The ray generating device according to claim 5 , wherein the microwave circulator comprises a four-port circulator.

7 . The ray generating device according to claim 4 , wherein the controller is configured to allow a microwave signal fed by the microwave generating device to the power input port of the microwave circulator to comprise at least one first input microwave signal at the first time period, and to allow the microwave signal fed by the microwave generating device to the power input port of the microwave circulator to comprise at least one second input microwave signal at the second time period, and power of the at least one first input microwave signal is greater than that of the at least one second input microwave signal.

8 . The ray generating device according to claim 1 , wherein the microwave generating device comprises a magnetron.

9 . A control method of the above ray generating device according to claim 1 , comprising:
performing chronological control on the microwave power of the microwave generating device through the controller, and performing chronological control on the beam loadings of a plurality of electronic beams respectively corresponding to the plurality of accelerating tubes generated by the electronic beam generating device, wherein the plurality of accelerating tubes accelerate the plurality of electronic beams, respectively, to generate a plurality of rays having different energies.

10 . The control method according to claim 9 , wherein the electronic beam generating device comprises: a first electronic gun and a second electronic gun respectively generating a first electronic beam and a second electronic beam, and a first electronic gun power source and a second electronic gun power source in signal connection with the controller and connected with the first electronic gun and the second electronic gun, respectively;
wherein the step of performing chronological control on the beam loadings of a plurality of electronic beams respectively corresponding to a plurality of accelerating tubes through a controller comprises: through the controller, allowing the first electronic gun power source to adjust the beam loading of the first electronic beam to be a first beam loading at a first time period in each period of at least one period, and allowing the second electronic gun power source to adjust the beam loading of the second electronic beam to be a second beam loading at a second time period in each period, wherein the first time period does not coincide with the second time period.

11 . The control method according to claim 10 , wherein at least two power output ports of the microwave circulator comprise a first power output port and a second power output port, the first power output is allocated with a microwave signal fed from the power input port, and the second power output is allocated with a microwave signal fed from the first power output port; the plurality of accelerating tubes comprise: a first accelerating tube connected with the first power output port band the first electronic gun and a second accelerating tube connected with the second power output port and the second electronic gun,
wherein the step of performing chronological control on the microwave power of the microwave generating device through the controller comprises: through the controller, allowing a microwave signal fed by the microwave generating device into the power input port of the microwave circulator to comprise at least one first input microwave signal at the first time period, and allowing a microwave signal fed by the microwave generating device into the power input port of t

Assignees

• Univ Tsinghua
• Nuctech Co Ltd

Inventors

• Kang Kejun
• Liu Yaohong
• Chen Huaibi
• Zhang Liang
• Tang Chuanxiang
• Li Yuanjing

Classifications

• H05H2007/027

  Microwave systems · CPC title

• H05H7/12

  Arrangements for varying final energy of beam · CPC title

• H05G1/32

  Supply voltage of the X-ray apparatus or tube · CPC title

• H05H9/02

  Travelling-wave linear accelerators {(travelling-wave tubes H01J25/34)} · CPC title

• H05H9/048

  Lepton LINACS · CPC title