3 mm波段二次谐波渐变复合腔回旋管的非线性模拟

刘睿; 喻胜; 李宏福

强激光与粒子束, 2005, 17 (3): 417, 网络出版: 2006-04-28

3 mm波段二次谐波渐变复合腔回旋管的非线性模拟

Nonlinear simulation on 3 mm band second-harmonic complex cavity gyrotron with gradual transition

论文大纲

刘睿喻胜李宏福

作者单位

电子科技大学物理电子学院,,四川,成都,610054

3 mm波段二次谐波回旋管复合腔多模注波互作用 3mm band Second-harmonic Gyrotron Complex cavity Multiple mode interacting with an electron beam

摘要

利用含电流的传输线方程,并在考虑多模注-波互作用及多模耦合的情况下,利用自主开发的多模高次谐波渐变结构复合腔回旋管的注-波互作用数值模拟软件,对3 mm波段二次谐波渐变复合腔回旋管进行了自洽非线性模拟,分析了H₀₂-H₀₃模式对下磁场系数、电流、电子注速度比对注-波互作用效率的影响.计算结果表明,在合适的腔体结构尺寸下,以及合适的磁场系数、电流、速度比下,注-波互作用效率可达27%.

Abstract

Starting from general transmission line equation with an electron beam, a self-consistent nonlinear analysis on 3 mm band second-harmonic complex cavity gyrotron with gradual transition is presented, in which the multiple mode interacting with a electron beam and mode coupling are taken into account, through a simulation code of self-consistent nonlinear beam-wave interaction made by ourselves. The influences of the magnetic field coefficient and current and the velocity ratio of the electron beam under the interaction between the electron beam and H₀₂-H₀₃ RF field for second-harmonic gyrotron are analyzed. The results show that an electron efficiency over 27% is predicted for suitable dimensions for the complex cavity and magnetic field coefficient and current and the velocity ratio of the electron beam.

参考文献

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Li H F, Du P Z, Yang S W, et al. A self-consistent field theory and simulation for complex cavity gyrotron with abrupt transition. Acta Physica Sinica, 2000, 49:312-317.

[5] 喻胜,李宏福,谢仲怜. 8 mm 波段三次谐波复合腔回旋管的非线性分析[J]. 物理学报,2001,50(10):1979-1983.
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刘睿, 喻胜, 李宏福. 3 mm波段二次谐波渐变复合腔回旋管的非线性模拟[J]. 强激光与粒子束, 2005, 17(3): 417. LIU Rui, YU Sheng, LI Hong-fu. Nonlinear simulation on 3 mm band second-harmonic complex cavity gyrotron with gradual transition[J]. High Power Laser and Particle Beams, 2005, 17(3): 417.

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