170 GHz兆瓦级回旋管横向磁场扫描线圈组设计  

Design of the transverse magnetic field sweeping solenoids for 170 GHz MW gyrotrons

作　　者：曾旭[1] 刘本田[1] 冯进军[1] 蔡军[1] ZENG Xu;LIU Bentian;FENG Jinjun;CAI Jun(Beijing Vacuum Electronics Research Institute,National Key Laboratory of Science and Technology on Vacuum Electronics,Beijing 100015,China)

机构地区：[1]北京真空电子技术研究所微波电真空器件国家级重点实验室

出　　处：《太赫兹科学与电子信息学报》2019年第6期929-932,共4页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家重点研发计划基金资助项目(2017YFE0300203)

摘　　要：170 GHz兆瓦级回旋管是热核聚变等离子体加热用电子回旋谐振系统最重要的功率源。在获得兆瓦级连续波输出功率的同时,收集极功率密度过大成为限制整管平均功率和脉宽进一步提升的主要问题。因此,设计了具备周期性变化的横向磁场扫描线圈组。通过仿真分析收集极内的电子注分布可知,采用该线圈组可以有效降低功率密度,从而保证整管稳定工作。同时,对不同电流相位的线圈组的性能进行对比分析,优化后的横向磁场扫描线圈组可使收集极平均功率密度由4.7 kW/cm^2下降到0.29 kW/cm^2,将被应用到未来170 GHz兆瓦级回旋管的热测中。170 GHz gyrotron utilized to heat the plasma in the thermonuclear fusion is a power source device and the most important component of the electron cyclotron resonance system.The problem of the overlarge power density in the collector will restrict the increase of the average output power and the pulse width.Therefore,a Transverse Magnetic Field Sweeping Solenoids(TMFSS)is designed.According to the simulation analysis of the electron distribution in the collector,the power density could be decreased significantly from 4.7 kW/cm^2 to 0.29 kW/cm^2 after applying the solenoids,which will effectively ensure the stable operation of the tube.The optimized design of the TMFSS will be used in the future gyrotrons assembly and hot testing.

关 键 词：热核聚变 等离子体加热 回旋管 横向磁场扫描线圈 

分 类 号：TN136[电子电信—物理电子学]