S波段相对论速调管二次微波提取技术的模拟研究  

Simulation Research on an S-Band High Efficiency Double Extracting Output Cavity

作　　者：闫文康 黄华[2] 王战亮[1] 李士锋 刘振帮[2] 何琥[2] 宫玉彬[1] YAN Wen-kang;HUANG Hua;WANG Zhan-liang;LI Shi-feng;LIU Zhen-bang;HE Hu;GONG Yu-bin(School of Electronics Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China;Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, Chinese 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,四川成都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：《真空电子技术》2018年第6期22-26,共5页Vacuum Electronics

基　　金：国家863计划资助项目

摘　　要：为了进一步提升相对论速调管的提取效率,本文利用理论和模拟相结合的方法,开展了S波段的相对论速调管放大器二次微波提取输出腔的研究,初级提取腔采用双间隙谐振腔,次级提取腔为单间隙谐振腔,并提出一种次级谐振腔的设计方法。模拟中采用预调制电子束(电子束电压900 kV、束流7. 5 kA、基波调制深度100%)激励输出腔。模拟结果表明:二次提取输出腔的初级和次级提取谐振腔分别输出2. 45和1. 0 GW的微波,总的输出微波约3. 5 GW,电子效率51%。设计的二次微波提取输出腔有效提高了相对论速调管放大器的效率,为高效率相对论速调管放大器提供新的途径。An S-band high efficiency double extracting output cavity for relativistic klystron amplifiers (RKA) has been designed. The primary extracting cavity is double-gap resonant cavity and the secondary extracting cavity is single-gap resonant cavity. A designing method for the secondary extracting resonant cavity is proposed. The double extracting output cavity is designed and optimized by using a 2.5 dimension Particle-in-Cell (PIC) code CHIPIC. The simulation results show that with an electron beam voltage of 900 kV, a current of 7.5 kA and a fundamental current modulation depth of 100%, the total output microwave power is 3.5 GW and the electronic efficiency is 51%. The output power from the primary extracting cavity is 2.5 GW and that from the secondary extracting cavity is 1.0 GW. The proposed output cavity can effectively increase the electronic efficiency of RKAs, which offers a new designing method for high efficiency RKAs.

关 键 词：高功率微波 相对论速调管放大器 二次提取输出腔 高效率 

分 类 号：TN122[电子电信—物理电子学]