一种60kV太空电子枪的仿真研究  

Study on Optical System Simulation of 60 kV Space Electron Gun

作　　者：杨子钰 董全林[1] 赵然 邵静怡[3] 刘洋洋 王军伟[3] YANG Ziyu;DONG Quanin;ZHAO Ran;SHAO Jingyi;LIU Yangyang;WANG Junwei(Beihang University,Beijing 100083,China;Dirui Industrial Co.,Ltd.,Changchun 130012,China;Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China)

机构地区：[1]北京航空航天大学,北京100083 [2]迪瑞医疗科技股份有限公司,长春130012 [3]北京卫星环境工程研究所,北京100094

出　　处：《航空制造技术》2023年第23期100-103,共4页Aeronautical Manufacturing Technology

摘　　要：根据设计目标的性能参数和结构位置,通过综合迭代法得到电子枪初值;并对比钨与LaB6两种阴极材料的性能,选择合适的阴极材料,利用SOURCES中相关程序对60 kV的太空电子枪进行了仿真,得到色差系数、束斑直径等仿真结果。根据焦距公式得到一级聚焦系统的焦距并进行聚焦系统的仿真,得到焦距、束斑和电子光路等仿真结果。通过分析一级聚焦系统的不足之处,重新设计二级聚焦系统,并由仿真得到极靴孔直径、线圈激励等性能参数和电磁透镜轴上场分布图。最后根据二级聚焦系统仿真结果,得出了符合要求的电子枪参数与电子光学参数。According to the performance parameters and structure position of the design target,the initial value of the gun is obtained by the comprehensive iteration method.Moreover,the performance of tungsten and LaB6 cathode materials was compared,the appropriate cathode materials were selected,and the 60 kV space electron gun was simulated by using the SOURCES related procedures,and the simulation results such as coefficient of chromatic aberration and beam spot diameter were obtained.According to the focal length formula,the focal length of the first-order focusing system is obtained and the simulation results of the focusing system,such as focal length,beam spot and optical path diagram,are obtained.By analyzing the shortcomings of thefirst stage focusing system,the second stage focusing system is redesigned,and the performance parameters such as pole shoe hole diameter,coil excitation and the distribution map of the electromagnetic lens axis are obtained by simulation.Finally,the parameters of electron gun and electron optics are obtained according to the simulation results of two-stage focusing system.

关 键 词：太空电子枪 综合迭代法 聚焦系统 光学系统 电子束 

分 类 号：V46[航空宇航科学与技术—航空宇航制造工程]