红外与毫米波学报2022，Vol.41Issue(4)：702-709,8.DOI:10.11972/j.issn.1001-9014.2022.04.008
电子注偏心对共焦波导回旋行波管的影响
The effect of electron beam misalignment on confocal waveguide gyrotron traveling wave tube
摘要
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 situa?tion 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 ef?fect of electron beam quality on the confocal waveguide beam-wave interaction. The results show that the electron beam misalignments can cause efficiency degradation.关键词
电子注偏心/共焦波导/太赫兹/回旋行波管Key words
electron beam misalignment/confocal waveguide/terahertz/gyrotron traveling wave tube(Gyro-TWT)引用本文复制引用
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):702-709,8.基金项目
Supported by National Natural Science Foundation of China(61571418,61531002) （61571418,61531002）
