摘要
开展了E型波导振荡器永磁引导系统的物理与设计研究。对强流相对论电子束在理想方波形反转引导磁场中的传输条件进行了理论分析,给出了相对论条件下轴对称复合场中电子束的傍轴轨迹方程和最小引导磁场的计算公式。根据该理论分析,针对C波段E型波导振荡器高频互作用区的结构特点,设计了反转永磁引导系统,同时给出了漂移管内各个磁场分量的表达式。该系统由轴径向磁化空心永磁体组合产生反转引导磁场,永磁体的总质量约为2.5 kg。采用爆炸发射阴极,展示了强流相对论电子束在该引导磁场中的传输特性。研究结果显示,所设计反转永磁引导系统可引导400 kV、580 A的环形电子束稳定通过半径为6 mm的漂移管,带入器件,得到112.5 MW的4.8 GHz微波输出功率,效率为48.49%,确定了反转永磁引导系统应用于E型波导振荡器的技术可能性。
The theoretical analysis and simulation on the permanent magnet guidance system of the E-typewaveguide oscillator are developed.Firstly,the theoretical analysis of the modified paraxial ray equation,theminimum magnetic field under relativistic conditions and the transmission conditions of an intense relativistic electronbeam in ideal reverse guidance magnetic field are presented.Then the reverse permanent magnet guidance system isdesigned according to the structure characteristics of the high-frequency interaction zone of the C-band E-typewaveguide oscillator,and the expression of each magnetic field component is given.The reverse permanent magnetguidance system produces reverse guidance magnetic field by combining axial and radial magnetized cylindricalpermanent magnets,and the total weight of the magnets is about 2.5 kg.The transmission characteristics of the intenserelativistic electron beam in the guiding magnetic field are shown.The annular intense relativistic electron beam isproduced by an explosive emission cathode.The results show that the designed reverse permanent magnet guidancesystem can guide the annular electron beam,with voltage of 400 kV,current of 580 A,to pass through the drift tubewith a radius of 6mm.In addition,the E-type waveguide oscillator can stably generate 4.8 GHz microwave with powerof 112.5 MW and efficiency of 48.49%,and the technical possibility of the reverse permanent magnet guidance systemapplied to the E-type waveguide oscillator is determined.
作者
曾彩萍
薛宇哲
杜创洲
尹磊
徐彻
刘庆想
Zeng Caiping;Xue Yuzhe;Du Chuangzhou;Yin Lei;Xu Che;Liu Qingxiang(School of Physics Science and Technology,Southwest Jiaotong University,Chengdu 610031,China)
出处
《强激光与粒子束》
CAS
CSCD
北大核心
2023年第7期89-95,共7页
High Power Laser and Particle Beams
基金
中央高校基本科研业务费专项资金项目(2682023CX076)
高功率微波技术创新工作站开放项目。
关键词
反转永磁引导磁场
E型波导振荡器
强流相对论环形电子束
粒子仿真
能散度
reverse permanent magnet guidance magnetic field
E-type waveguide oscillator
annular intenserelativistic electron beam
particle simulation
energy divergence
作者简介
联系方式:曾彩萍,1411602492@qq.com;通信作者:徐彻,xuche@swjtu.edu.cn。
