电子注偏心对共焦波导回旋行波管的影响
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1.中国科学院空天信息创新研究院 高功率微波源与技术国防科技创新重点实验室,北京100140;2.中国科学院大学 电子电气与通信工程学院,北京100049

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The effect of electron beam misalignment on confocal waveguide gyrotron traveling wave tube
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Affiliation:

1.Key Laboratory of Science and Technology on High Power Microwave Sources and Technologies, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 101400, China;2.School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Fund Project:

Supported by National Natural Science Foundation of China (61571418, 61531002)

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    摘要:

    利用线性和非线性理论研究了电子注偏心对0.22 THz回旋行波管注波互作用的影响。基于色散方程研究了电子注偏心对线性增益、绝对不稳定性的起振电流和返波振荡的起振条件的影响。引入自洽非线性理论,分析了电子注偏心对输出功率和注波互作用效率的作用。同时,在考虑速度离散的情况下,研究了电子注质量对共焦波导注波互作用的影响。结果表明,电子注偏心会导致效率的降低。

    Abstract:

    In this paper, the effect of misaligned electron beam on the beam-wave interaction has been studied for a 0.22 THz confocal waveguide gyrotron traveling wave tube (gyro-TWT) with linear and nonlinear theory. The effect of electron beam misalignment on linear gain, critical current of absolutely instability and the exciting situation of backward wave oscillation is investigated by dispersion equation. A self-consistent nonlinear theory for confocal gyro-TWT is introduced to analyze the influence of electron beam misalignment on output power and beam-wave interaction efficiency. Meanwhile, the velocity spread is also taken into account to investigate the effect of electron beam quality on the confocal waveguide beam-wave interaction. The results show that the electron beam misalignments can cause efficiency degradation.

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杨杰,徐寿喜,王勇,王笑妍.电子注偏心对共焦波导回旋行波管的影响[J].红外与毫米波学报,2022,41(4):702~709]. YANG Jie, XU Shou-Xi, WANG Yong, WANG Xiao-Yan. The effect of electron beam misalignment on confocal waveguide gyrotron traveling wave tube[J]. J. Infrared Millim. Waves,2022,41(4):702~709.]

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  • 收稿日期:2021-11-03
  • 最后修改日期:2022-08-13
  • 录用日期:2022-01-24
  • 在线发布日期: 2022-08-10
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