| S波段宽带大功率连续波耦合腔行波管3维模拟设计 |
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| 引用本文： | 李文君,许州,林郁正,金晓,黎明.S波段宽带大功率连续波耦合腔行波管3维模拟设计[J].强激光与粒子束,2006,18(6):965-968. |
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| 作者姓名： | 李文君 许州 林郁正 金晓 黎明 |
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| 作者单位： | 1. 清华大学 工程物理系， 北京 100084；2. 中国工程物理研究院 应用电子学研究所， 四川 绵阳 621900 |
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| 基金项目： | 中国物理研究院科研项目 |
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| 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2.0~2.3 GHz，输出功率4.3 kW，频带内增益波动±0.7 dB。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。
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| 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 |
| 文章编号： | 1001-4322(2006)06-0965-04 |
| 收稿时间： | 2005-10-27 |
| 修稿时间： | 2006-03-21 |
Three-dimensional simulation of a broadband high-power CW S-band coupled-cavity traveling-wave tube |
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| LI Wen-jun,XU Zhou,LIN Yu-zheng,JIN Xiao,LI Ming.Three-dimensional simulation of a broadband high-power CW S-band coupled-cavity traveling-wave tube[J].High Power Laser and Particle Beams,2006,18(6):965-968. |
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| Authors: | LI Wen-jun XU Zhou LIN Yu-zheng JIN Xiao LI Ming |
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| Institution: | 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China;2. Institute of Applied Electronics, CAEP, P.O.Box 919-1014, Mianyang 621900, China |
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| Abstract: | Quantitative analysis of the large-signal beam-wave interaction of coupled-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 areoperating 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 coupled-cavity TWT is also studied and the simulation results of dispersion and interaction impedance are given. |
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| Keywords: | Coupled-cavity TWT CW Three-dimensional simulation PIC simulation Cold cavity characteristic |
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