Abstract: The structure and characteristics of magnetron injection gun for mm-wave gyro-klytron are introduced．Properties of electron beam directly affect the parameters of gyro-klytron．In order to get high efficiency and high output
power,a code for the electron gun was used to simulate the electron trajectory, and the influence of electrode shape, magnet field and electron trajectory on the electron beam has been studied．The simulation results became the foundation for the electron gun design．

Key words: Magnetron injection gun, Simulative calculation, Electron beam, Electrode shape

摘要： 介绍了毫米波回旋速调管磁控注入电子枪的结构与特点。电子枪提供的电子束流性能直接影响到回旋速调管的总体参数,为保证整管的效率和输出功率, 利用电子枪模拟程序对电子轨迹进行模拟计算, 研究了电极形状、磁场分布以及电子轨迹与电子注参量的影响,并为磁控注入电子枪的设计提供了理论依据。

关键词: 电子枪, 模拟计算, 电子注, 电极形状