Ka波段同轴多注相对论速调管的电子束引入  

Electron beam introduction of Ka-band coaxial multi-beam relativistic klystron amplifier

作　　者：党智伟 李士锋 王战亮[1] 黄华[2] 王腾钫 刘振帮[2] 宫玉彬[1] Dang Zhiwei;Li Shifeng;Wang Zhanliang;Huang Hua;Wang Tengfang;Liu Zhenbang;Gong Yubin(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;National Key Laboratory of Science and Technology on High Power Microwave Technology,Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]电子科技大学电子科学与工程学院,成都610054 [2]中国工程物理研究院应用电子学研究所,高功率微波技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2020年第4期78-83,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61531010,11605191);国家重点实验室基金项目(9140A23010415DZ02001)

摘　　要：首先通过理论分析确定影响多注电子束引入效率的主要因素,确定初步的结构参数;其次利用三维粒子模拟软件建立Ka波段相对论多注二极管模型进行仿真优化,使电子束引入效率达到89%;并开展了电子束的产生与传输实验研究,验证了粒子模拟仿真结果。在电子束电压502 kV、束流4.34 kA、轴向磁感应强度0.76 T的条件下,电子束引入效率达到了72%,由电子束轰击尼龙靶材获得的电子束束斑图表明,电子束在产生与传输过程中形状未发生畸变,产生的电子束直径约为2 mm。模拟和实验研究验证了设计的强流多注二极管可以产生高品质的电子束和实现高效率的电子束引入。This paper firstly determines the main factors affecting its the efficiency of multi-injection electron beam introduction and preliminary structural parameters through theoretical analysis. Secondly, the Ka-band relativistic multi-beam diode model is established by three-dimensional particle simulation software to optimize the structural parameters. The final efficiency of electron beam introduction can reach 89%. An experimental study on the generation and transmission of electron beams was carried out to verify the results of particle simulation. Under the condition of electron beam voltage 502 kV, beam current 4.34 kA, axial magnetic induction strength 0.76 T, the electron beam introduction efficiency reached 72%. The electron beam pattern obtained by electron beam bombardment of the nylon target indicates that the shape of the electron beam is not distorted during generation and transmission. The generated electron beam diameter is about 2 mm. The simulation and experimental results show that the designed high-current multi-beam diode can generate high-quality electron beams and achieve efficient electron beam introduction.

关 键 词：高功率微波 同轴多注相对论速调管 相对论多注二极管 多注电子束引入 

分 类 号：TN62[电子电信—电路与系统]