平面结构磁控注入回旋电子枪的模拟设计  

Design Optimization of Planar Sheet Beam Magnetron Injection Gun: A Simulation Study

作　　者：向逸东 赵鼎 薛谦忠 李晓菲 Xiang Yidong;Zhao Ding;Xue Qianzhong;Li Xiaofei(Key Laboratory of High Power Sources and Technologies,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;The School of Electronic,Electrical and Communication Engineering,University of Chinese Academy Sciences,Beijing 100190,China)

机构地区：[1]中国科学院空天信息创新研究院高功率微波源与技术重点实验室,北京100094 [2]中国科学院大学电子电气与通信工程学院,北京100190

出　　处：《真空科学与技术学报》2020年第3期226-232,共7页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金资助项目(61671431)。

摘　　要：根据绝热压缩理论和动量守恒关系设计了W波段平面结构双阳极磁控注入回旋电子枪。利用软件EGUN对该电子枪进行了仿真模拟,分析了双阳极间距、调制阳极电压和阴极倾角等因素对电子注性能的影响,利用Opera电磁仿真软件设计了一个工作电压为34 kV,工作电流1.7 A,电子注的横纵速度比1.16,横向速度零散3.5%的平面结构双阳极磁控注入带状注回旋电子枪。该枪的电子束流具有垂直和平行于磁场的能量,最终为适应平面格栅金属放大器并产生具有一定横向速度的电子束流。A novel type of W-band double-anode planar sheet beam magnetron injection gun(PS-MIG) was designed theoretically based on adiabatic compression theory and momentum conservation law.The operation of newly-designed PS-MIG was simulated with EGUN software. The impact of the key variables,including but not limited to the two-anode spacing,modulating anode voltage,tilt-angle of cathode surface,on the sheet-beam characteristics was investigated for design optimization.In addition,the optimized PS-MIG,working at a voltage of 34 kV and a current of 1.7 A,was exemplified and evaluated via Opera simulation.The simulated results show that the novel PS-MIG meets the design requirements.For example,it was capable of generating the e-beam with a transverse to longitudinal velocity ratio of 1.16,a transverse-velocity spread of 3.5 % and a stable sheet e-beam transport distance of 94 mm.

关 键 词：平面结构 带状回旋电子注 磁控注入电子枪 横纵速度比 

分 类 号：TN128[电子电信—物理电子学]