摘要
使用3维PIC粒子模拟软件定量分析了耦合腔行波管的大信号注波互作用行为。使用完整的仿真模型完成了S波段连续波管型的设计，达到如下设计指标：工作频率2．0～2．3GHz，输出功率4．3kW，频带内增益波动±0．7dB。提出了使用大介电常数微扰介质棒减小耦合阻抗计算误差的方法，研究了行波管的冷腔特性，给出了色散、耦合阻抗等参数。
Quantitative analysis of the large-signal beam-wave interaction of couple＆cavity traveling-wave tube （TWT） is performed using three-dimensional PIC code. With an integrated model, an S-band CW coupled-cavity TWT is designed. The design parameters of this tube are：operating frequency from 2.0 GHz to 2.3 GHz,output power 4.3 kW,gain fluctuation ±0.7 dB. In order to reduce the computing error of interaction impedance, a method using perturbation dielectric rod with big dielectric constant is proposed. Cold cavity characteristic of couple＆cavity TWT is also studied and the simulation results of dispersion and interaction impedance are given.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2006年第6期965-968,共4页
High Power Laser and Particle Beams
基金
中国工程物理研究院基金资助课题
关键词
耦合腔行波管
连续波
3维模拟
PIC粒子模拟
冷腔特性
Coupled-cavity TWT
CW
Three-dimensional simulation
PIC simulation
Cold cavity characteristic
