Theoretical Study on a Large Radius Coaxial Cavity Terahertz Gyrotron

YUAN Xue-song; YAN Yang; LIU Sheng-gang

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Theoretical Study on a Large Radius Coaxial Cavity Terahertz Gyrotron

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- Theoretical Study on a Large Radius Coaxial Cavity Terahertz Gyrotron
- Acta Electronica Sinica Vol. 37, Issue 2, Pages: 334-337(2009)
- 作者机构：
  
  电子科技大学物理电子学院太赫兹研究中心,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN129
- Published：2009
- 稿件说明：
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YUAN Xue-song, YAN Yang, LIU Sheng-gang. Theoretical Study on a Large Radius Coaxial Cavity Terahertz Gyrotron[J]. Acta Electronica Sinica, 2009, 37(2): 334-337.
DOI：

YUAN Xue-song, YAN Yang, LIU Sheng-gang. Theoretical Study on a Large Radius Coaxial Cavity Terahertz Gyrotron[J]. Acta Electronica Sinica, 2009, 37(2): 334-337. DOI：

摘要

为了发展大功率太赫兹辐射源

本文对大半径同轴谐振腔回旋管进行了理论和数值模拟研究

理论计算结果表明在同轴谐振腔中其角向对称的TE

模式的截止频率与

近似成正比关系

与内外导体之间的距离近似成反比关系.根据上述特点作者设计了一只大半径同轴腔0.3THz、TE

模回旋管

数值计算和粒子模拟结果表明:大半径同轴谐振腔太赫兹回旋管与空心波导谐振腔回旋管相比具有很多优点:腔体尺寸相对较大

工作电流可以大幅度提高;其对称的TE

模式与非对称的TE

模式的间隔较大

有利于克服模式竞争.

Abstract

In order to develop high power Terahertz sources

a large radius coaxial cavity gyrotron has been studied in this paper.The results of theoretical calculation show that in a coaxial cavity the cutoff frequency of TE

mode is almost proportional to

and in inverse proportion to the distance between inner and outer conductor.According to these characteristics a large radius coaxial cavity 0.3THz TE04 mode gyrotron is designed.The results of numerical calculation and PIC simulation show the large radius coaxial gyrotrons have a lot of advantages compared with the waveguide gyrotrons:the size of coaxial cavity is comparatively larger and outpwt power can be increased.The interval between TE0n and TEmn mode is increased which has improved mode competition greatly.

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