回旋管磁控注入电子枪的设计  

Design and Simulation of Magnetron Injection Gun of Gyrotron

作　　者：史少辉[1,2] 刘濮鲲[3] 徐寿喜[2] 耿志辉[2] 杜朝海[3] 韩万强[1] 刘继宏[1] 可丹丹 

机构地区：[1]石家庄学院物理学系,石家庄050035 [2]中国科学院电子学研究所,北京100190 [3]北京大学信息科学技术学院,北京100871 [4]元氏县第一中学,石家庄051130

出　　处：《真空科学与技术学报》2014年第10期1071-1075,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金项目(11275206;61072024;60971072;11178016);石家庄学院校级科研平台建设成果(XJPT002);河北省高等学校科学研究计划项目(Z2013025)

摘　　要：以磁控注入电子枪的绝热压缩理论和角动量守恒关系为基础,编写了磁控注入电子枪的计算程序MGUN,利用该程序完成了一个输出功率为56 kW的W波段二次谐波回旋振荡管磁控注入电子枪的初步设计,利用EGUN对该磁控枪进行了研究,分析了空间电荷效应、双阳极间距、调制极电压、阴极的倾角及阴极磁场强度等因素对电子注性能的影响并对磁控枪进行了优化,结果显示:当电子注的加速电压为36 kV、工作电流为4 A时,电子注的横纵速度比α=1.5,横向速度离散Δv⊥/v⊥=2.4%。另外,文章还利用粒子模拟软件对EGUN的结果进行了验证,两种方法所得结果基本一致。A novel type of the double-anode magnetron injection gun, dedicated to gyrotron, was preliminarily designed with a self-developed code MGUN, on the basis of adiabatic compression theory and angular momentum conservation. The impacts of the key variables, including but not limited to the space-charge,separation of the two anodes,modu- lating voltage, cathode tilt angle, and cathode magnetic field, on the characteristics of the electron beam were modeled and simulated with MGUN to optimize design of the injection gun. The optimized results show that accelerated at 36 kV and operated at 4 A, the electron beam with a transverse to longitudinal velocity ratio of 1.5 and a transverse velocity spread of 2.4% can be obtained. The MIG, designed and optimized with EGUN, was simulated with particle-in-cen （PIC） code. Fairly consistent results were obtained in both EGUN and PIC simulations

关 键 词：回旋管 磁控注入电子枪 粒子模拟 速度离散 

分 类 号：TN125[电子电信—物理电子学]