3 mm波段二次谐波渐变复合腔回旋管的非线性模拟  

Nonlinear simulation on 3 mm band second-harmonic complex cavity gyrotron with gradual transition

作　　者：刘睿[1] 喻胜[1] 李宏福[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《强激光与粒子束》2005年第3期417-421,共5页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：利用含电流的传输线方程,并在考虑多模注波互作用及多模耦合的情况下,利用自主开发的多模高次谐波渐变结构复合腔回旋管的注波互作用数值模拟软件,对3 mm波段二次谐波渐变复合腔回旋管进行了自洽非线性模拟,分析了H02 H03模式对下磁场系数、电流、电子注速度比对注波互作用效率的影响。计算结果表明,在合适的腔体结构尺寸下,以及合适的磁场系数、电流、速度比下,注波互作用效率可达27%。Starting from general transmission line equation with an electron beam, a self-consistent nonlinear analysis on 3 mm band second-harmonic complex cavity gyrotron with gradual transition is presented, in which the multiple mode interacting with a electron beam and mode coupling are taken into account, through a simulation code of self-consistent nonlinear beam-wave interaction made by ourselves. The influences of the magnetic field coefficient and current and the velocity ratio of the electron beam under the interaction between the electron beam and H02-H03 RF field for second-harmonic gyrotron are analyzed. The results show that an electron efficiency over 27% is predicted for suitable dimensions for the complex cavity and magnetic field coefficient and current and the velocity ratio of the electron beam.

关 键 词：3 mm波段 二次谐波 回旋管 复合腔 多模注波互作用 

分 类 号：TN129[电子电信—物理电子学]