太赫兹FWG-TWT电子光学系统的数值模拟验证  

Simulation and verification of the optics system of micro-electronic vacuum FWG-TWT

作　　者：张芳[1] 董志伟[1] 陈洪斌[2] 周泉丰[2] 束小建[1] ZHANG Fang;DONG Zhiwei;CHEN Hongbin;ZHOU Quanfeng;SHU Xiaojian(Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;Institute of Applied Electronics,China Academy of Engineering Physics,Mianyang Sichuan 621999,China)

机构地区：[1]北京应用物理与计算数学研究所,北京100094 [2]中国工程物理研究院应用电子学研究所,四川绵阳621999

出　　处：《太赫兹科学与电子信息学报》2018年第1期27-30,共4页Journal of Terahertz Science and Electronic Information Technology

基　　金：中国工程物理研究院太赫兹科学技术研究中心基金资助项目(MT2015-08-07)

摘　　要：结合实验模型,对0.22 THz折叠波导行波管(FWG-TWT)的电子光学系统进行数值模拟验证。首先对电子枪的工作机制进行细致研究和仿真验证,然后对电子光学系统(包括电子枪和周期永磁聚焦结构两部分)进行一体化建模,结合实际,合理设置仿真模型的工作参数及边界条件等。分析影响电子注流通率的关键因素,调整结构参数和束流参数,提高电子注的直流流通率。For 0.22 THz micro-electric vacuum Folded Waveguide Traveling Wave Tube(FWG-TWT)amplifier,the model of whole electronic optics system for experiment is simulated.First of all,electron gun’s working mechanism is analyzed and verified by simulation.Then the whole electronic optics system(including electron gun and periodic permanent magnetic focusing structure)is modeled.Combined with actual experimental conditions,the operating parameters and boundary conditions of the whole electronic optics system are set up properly for simulation.The key factors influencing the passing rate of electron beam are analyzed,and the structural parameters and beam parameters of electronic optics system are adjusted to improve electron beam’s DC passing rate.

关 键 词：太赫兹 折叠波导行波管放大器 电子光学系统 电子枪 周期永磁聚焦系统 

分 类 号：TN102[电子电信—物理电子学]