Design and preliminary test of a 105/140 GHz dual-frequency MW-level gyrotron  

作　　者：Linlin HU Dimin SUN Qili HUANG Tingting ZHUO Guowu MA Yi JIANG Shenggang GONG Zaojin ZENG Zixing GUO Chaohai DU Fanhong LI Hongbin CHEN Fanbao MENG Hongge MA 胡林林;孙迪敏;黄麒力;卓婷婷;马国武;蒋艺;龚胜刚;曾造金;郭子星;杜朝海;李繁宏;陈洪斌;孟凡宝;马弘舸(Institute of Applied Electronics,Academy of Engineering Physics,Mianyang 621900,People's Republic of Chian;Peking University,Beijing 100871,People's Republic of China)

机构地区：[1]Institute of Applied Electronics,Academy of Engineering Physics,Mianyang 621900,People's Republic of Chian [2]Peking University,Beijing 100871,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第3期162-169,共8页等离子体科学和技术（英文版）

基　　金：supported in part by NSAF(No.U1830201);in part by the State Administration of Science,Technology and Industry for Nation Defense of China,Technology Foundation Project(No.JSJL2019212B006);in part by the Academy Innovation Funder(No.CX2020038);in part by the National Defense Basic Scientific Research Program(No.2018212C015)。

摘　　要：A dual-frequency(105/140 GHz)MW-level continuous-wave gyrotron was developed for fusion application at Institute of Applied Electronics,China Academy of Engineering Physics.This gyrotron employs a cylindrical cavity working in the TE18,7 mode at 105 GHz and the TE24,9 mode at 140 GHz.A triode magnetron injection gun and a built-in quasi-optical mode converter were designed to operate at these two frequencies.For the proof-test phase,the gyrotron was equipped with a single-disk boron nitride window to achieve radio frequency output with a power of~500 k W for a short-pulse duration.In the preliminary short-pulse proof-test in the first quarter of2021,the dual-frequency gyrotron achieved output powers of 300 k W at 105 GHz and 540 k W at140 GHz,respectively,under 5 Hz 1 ms continuous pulse-burst operations.Power upgrade and pulse-width extension were hampered by the limitation of the high-voltage power supply and output window.This gyrotron design was preliminarily validated.

关 键 词：GYROTRON MEGAWATT plasma heating fusion application DUAL-FREQUENCY 

分 类 号：TL542[核科学技术—核技术及应用]