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397 GHz斜注管互作用系统的设计模拟

苏思铭 冯进军

苏思铭, 冯进军. 397 GHz斜注管互作用系统的设计模拟[J]. 强激光与粒子束, 2019, 31: 123102. doi: 10.11884/HPLPB201931.190368
引用本文: 苏思铭, 冯进军. 397 GHz斜注管互作用系统的设计模拟[J]. 强激光与粒子束, 2019, 31: 123102. doi: 10.11884/HPLPB201931.190368
Su Siming, Feng Jinjun. Design and simulation of beam-wave interaction system of 397 GHz clinotron[J]. High Power Laser and Particle Beams, 2019, 31: 123102. doi: 10.11884/HPLPB201931.190368
Citation: Su Siming, Feng Jinjun. Design and simulation of beam-wave interaction system of 397 GHz clinotron[J]. High Power Laser and Particle Beams, 2019, 31: 123102. doi: 10.11884/HPLPB201931.190368

397 GHz斜注管互作用系统的设计模拟

doi: 10.11884/HPLPB201931.190368
详细信息
    作者简介:

    苏思铭(1995—),男,硕士研究生,主要研究方向为短毫米波和太赫兹真空电子器件研制:18645093816@163.com

  • 中图分类号: TN125

Design and simulation of beam-wave interaction system of 397 GHz clinotron

  • 摘要: 斜注管是返波振荡器的一种,通过电子注的倾斜,电子距离慢波结构更近,高频场更强,耦合阻抗和互作用效率更高,显著增加输出功率。对带状注斜注管的互作用系统进行了设计,并首次将双排齿慢波结构应用于斜注管。利用电磁模拟软件和3D粒子模拟软件对设计的斜注管的色散曲线和场分布进行了分析,并对其注-波互作用进行了模拟,可以得到大于100 mW的输出功率以及50 GHz的调谐带宽。输出功率在370.5 GHz频点处处达到峰值2.3 W,电子注电压7.0 kV,注电流120 mA,聚焦磁场1.0 T。
  • 图  1  斜注管注-波互作用系统示意图

    Figure  1.  Beam-wave interaction system of the clinotron

    图  2  斜注管慢波结构三视图

    Figure  2.  Structure diagram of the double corrugated waveguide SWS

    图  3  CST微波工作室中建立的单周期慢波结构模型

    Figure  3.  Solid model of one single period slow wave structure (SWS) in CST

    图  4  计算与模拟得到的斜注管慢波结构色散曲线

    Figure  4.  Comparison of calculation and simulation dispersion curves in the SWS

    图  5  单周期双排齿慢波结构的耦合阻抗

    Figure  5.  Coupling impedance of the SWS

    图  6  耦合阻抗的计算位置

    Figure  6.  Calculation point of coupling impedance

    图  7  CST软件中的斜注管互作用系统模型

    Figure  7.  Interaction section of clinotron solid model in CST

    图  8  CST模拟的电子注形态

    Figure  8.  Sheet beam cross section in CST model

    图  9  互作用系统末端的电子群聚

    Figure  9.  Electron bunching at the end of the interaction section

    图  10  电压调谐曲线

    Figure  10.  Operating frequency versus beam voltage

    图  11  CST软件模拟的互作用系统输出功率曲线

    Figure  11.  Simulated output power in CST

    图  12  模拟得到的370 GHz频点的电场随时间变化的函数

    Figure  12.  Electric field versus time

    图  13  模拟得到的370 GHz频点端口输出功率

    Figure  13.  Simulated output power

    图  14  370.5 GHz频点的快速傅里叶变换谱线

    Figure  14.  Frequency spectrum through FFT (370.5 GHz)

    图  15  397 GHz频点的快速傅里叶变换谱线

    Figure  15.  Frequency spectrum through FFT (397 GHz)

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出版历程
  • 收稿日期:  2019-09-19
  • 修回日期:  2019-11-12
  • 刊出日期:  2019-12-01

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