强激光与粒子束2024，Vol.36Issue(3)：53-58,6.DOI:10.11884/HPLPB202436.230394
一种束半径可调的环形强流电子束产生技术及应用
A technology for generating intense annular electron beam with variable beam radius and its application
周富贵 1张点 1张军 2陈英豪 1靳振兴 1周生岳1
作者信息
- 1. 国防科技大学前沿交叉学科学院,长沙 410073
- 2. 国防科技大学前沿交叉学科学院,长沙 410073||国防科技大学理学院,长沙 410073
- 折叠
摘要
Abstract
Intense annular electron beam with variable beam radius has important applications in high power microwave(HPM)generation devices with cross-band frequency hopping.This paper proposes a technology of changing the radius of annular electron beam based on the adjustment of the externally guided magnetic field.The core components of the technology include an annular cathode,an anode,an electron beam transfer channel,two transmission channels and an external guide magnet(a three-segment solenoid)system.When the current of the solenoid differs,the solenoid system can generate different magnetic field distributions.In the particle-in-cell(PIC)simulation,when the currents of the three segments are 1025 A,107 A,107 A and 300 A,300 A,0 A respectively,the solenoid generates two magnetic fields to achieve the change of the electron beam radius.Based on the theory of single particle motion,this paper deduces the expression of the trajectory of electron beam guided by the gradient magnetic field,explains the principle of the electron beam radius variation under the gradient magnetic field,and investigates the influence of the slope and range of the gradient magnetic field on the electron beam radius.In the cross-band HPM devices simulation,the output power of X-band is 1.6 GW,the frequency is 8.2 GHz,and the power efficiency is 40%.The Ku-band has achieved a power output of 1.5 GW,a frequency of 14.4 GHz,and a power efficiency of 38%.关键词
高功率微波/慢波结构/跨波段/跳频Key words
high power microwave/slow wave structure/cross-band/frequency hopping分类
信息技术与安全科学引用本文复制引用
周富贵,张点,张军,陈英豪,靳振兴,周生岳..一种束半径可调的环形强流电子束产生技术及应用[J].强激光与粒子束,2024,36(3):53-58,6.
