非均匀三腔谐振腔渡越时间效应的小信号分析  

Small signal analysis of the transit-time effect in the nonuniform three-cavity oscillator

作　　者：贺军涛[1] 钟辉煌[1] 钱宝良[1] 

机构地区：[1]国防科学技术大学理学院,湖南长沙410073

出　　处：《强激光与粒子束》2003年第10期985-988,共4页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：　研究了小信号条件下,电子束在非均匀的三腔谐振腔π模驻波场中的渡越时间效应,求得了束波功率转换效率的函数表达式,通过采用"罚函数法"求解有约束条件的最优化问题,得到的结果表明:非均匀结构比均匀结构有更高的束波功率转换效率。Traditional transit-time oscillators such as split-cavity oscillator, three-cavity oscillator (TCO), super-reltron etc., have a common characteristic that the span between foils in the modulating cavity is equal. By varying span from equal to different, we developed a new device called nonuniform three-cavity oscillator (NTCO). Based on the motion of the single electron whose incident phase was ψ0 in standing wave electric field under the small signal condition, the transit-time effect of electron beam in π mode standing wave electric field in the NTCO was investigated, function expression of beam-wave power conversion efficiency was obtained, and the constrained optimization problems were solved through penalty function method. The conclusion is that beam-wave power conversion efficiency of the nonuniform structure is higher than that of the uniform structure.

关 键 词：非均匀三腔谐振腔 渡越时间效应 小信号 最优化 

分 类 号：TN732.2[电子电信—电路与系统]