94GHz单阳极磁控注入式电子枪初始参数设计

摘要

A single-anode magnetron injection electron gun is designed and simulated according to the requirements of a 94 GHz gyrotron oscillator. On the basis of detailed theoretical analysis about the operating principle of the gun by programming, the designing of its initial parameters is performed, and its calculation module is developed based on the particle simulation software CHIPIC. The simulation results show that, the ratio of transverse velocity to axial velocity is 1. 42 and the velocity spread is a-bout 4. 6%. The designed electron gun has achieved excellent beam parameters, which can meet the requirements for the electron beam in the gyrotron oscillator.%根据94 GHz回旋振荡管对电子束的需求,在理论分析电子枪工作原理的基础上通过大量编程对94 GHz单阳极磁控注入式电子枪的一系列参数进行了初始设计,基于粒子模拟软件CHIPIC开发了专门针对磁控注入式电子枪的计算模块并对其进行了数值模拟.模拟结果显示:该枪的电子束横纵速度比为1.42、速度零散为4.6％,符合回旋振荡管对电子注的要求.