大功率行波管两级降压收集极的设计  

Design of two stage depressed collector for high-power traveling wave tube

作　　者：刘宇荣 刘斌 王大明 

机构地区：[1]南京三乐集团有限公司,南京211800

出　　处：《强激光与粒子束》2017年第10期39-43,共5页High Power Laser and Particle Beams

基　　金：国家专项基金项目

摘　　要：主要介绍了某X波段大功率耦合腔脉冲行波管两级降压收集极的CAD分析、结构设计及研制结果。通过使用国营第七七二厂2.5维互作用程序软件包(TWTC软件)对行波管输出端96条电子轨迹的半径,轴向、径向速度模拟并分析,判断电子注层流性情况,然后对两级降压收集极进行光学设计、结构设计和热分析,装管验证结果表明:实测值结果与理论计算的两级降压收集极各电极电流分配比例、收集极效率等参数接近。This paper presents a method for design a suitable two stage depressed collector of X band large duty ratio coupled-cavity traveling wave tube （CC-TWT）. The axial, radial velocities and radius of 96 electron trajectories in the output potion of this TWT were simulated and analyzed by 2.5 dimensional interaction package owned by 772nd factory. A refocusing segment was designed to improve the flow of electron injection layer with the help of re-simulation of these parameters. Then a two stage depressed collector was designed with optical design, structural design and thermal analysis. Finally, a TWT was assembled for testing. The measured proportion of the current distribution in every collector electrode and the collector efficiency are close to the analytical full-band average results, which means that this analytical method is suitable for design of two stage depressed collector for high-power CC-TWT.

关 键 词：大功率 耦合腔脉冲行波管 两级降压收集极 电子轨迹 收集极效率 

分 类 号：TN124[电子电信—物理电子学]