105/140 GHz双频兆瓦级回旋管的设计与实验进展  

Design and experimental progress of a 105/140 GHz dual-frequency MW-level gyrotron

作　　者：胡林林[1] 孙迪敏[1] 黄麒力 卓婷婷[1] 龚胜刚[1] 胡鹏[1] 蒋艺[1] 马国武[1] 陈洪斌[1] 马弘舸[1] Hu Linlin;Sun Dimin;Huang Qili;Zhuo Tingting;Gong Shenggang;Hu Peng;Jiang Yi;Ma Guowu;Chen Hongbin;Ma Hongge(Institute of Applied Electronics,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2023年第8期113-118,共6页High Power Laser and Particle Beams

基　　金：国家自然科学面上基金项目(12175217);技术基础科研项目(JSJL2021212B003)。

摘　　要：介绍了105/140 GHz双频兆瓦级回旋管的设计和最新实验进展。该回旋管的谐振腔、准光模式变换器、BN输出窗采用了双频共用的设计,电子枪采用了双频复用的双阳极磁控注入枪,收集极采用单级降压。在现有实验室电网功率容量有限的情况下,进行脉冲调试,得到的实验结果为:在重频1 Hz、ms连续短脉冲条件下,在105 GHz点和140 GHz点脉冲功率分别达到710 kW和1.057 MW,脉宽0.7 ms,对应总效率分别为34%和49%。在105 GHz点通过脉宽延展和老炼,进一步得到300 kW/2 s和400 kW/1 s的秒级脉宽实验结果,BN窗片的温度在两种状态下温度分别达到606℃和503℃,波束频率单一,没有杂模。实验基本上验证了该器件的物理设计。The design and latest experimental progress of a 105/140 GHz dual-frequency megawatt-level gyrotron for fusion applications are presented.The resonant cavity,quasi-optical mode converter and BN output window of the gyrotron adopt the design of dual-frequency sharing,the electron gun adopts the triode magnetron injection gun with dual-frequency multiplexing,and the collecting pole adopts the single-stage depressed collector.The experimental results are as follows:under the ms short-pulse condition with repetitive rate of 1 Hz,pulse powers of 710 kW at 105 GHz and 1.057 MW at 140 GHz have been achieved.The pulse width is 0.7 ms,and the total efficiency is 34%at 105 GHz and 49%at 140 GHz,respectively.Through pulse width extension and aging,the experimental results of 105 GHz/300 kW/2 s,105 GHz/400 kW/1 s and 140 GHz/400 kW/1 s are obtained.The temperature of BN window reaches 606℃,503℃and 633℃,respectively,in the three states.The frequencies during long-pulse operations are stable,indicating that there are no parasitic modes.The experiment basically verifies the physical design of the device.

关 键 词：回旋管 双频 电子回旋加热 磁约束聚变 

分 类 号：TN129[电子电信—物理电子学]