Polarimeter–interferometer diagnostic using terahertz solid-state sources for fluctuation measurements on Keda Torus e Xperiment(KTX)  

作　　者：汪兴康 毛文哲 谢锦林 兰涛 李弘 刘阿娣 周楚 温晓辉 卫子安 吴捷 陈晨 刘东宽 饶贤昊 蔡虎 邬佳仁 邓鹏 刘海庆 丁卫星 庄革 刘万东 Xingkang WANG;Wenzhe MAO;Jinlin XIE;Tao LAN;Hong LI;Adi LIU;Chu ZHOU;Xiaohui WEN;Zian WEI;Jie WU;Chen CHEN;Dongkuan LIU;Xianhao RAO;Hu CAI;Jiaren WU;Peng DENG;Haiqing LIU;Weixing DING;Ge ZHUANG;Wandong LIU(School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China)

机构地区：[1]School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China [2]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China

出　　处：《Plasma Science and Technology》2024年第3期61-65,共5页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.12175227);the Fundamental Research Funds for the Central Universities(No.USTC 20210079);the Collaborative Innovation Program of Hefei Science Center,CAS(No.2022HSC-CIP022)。

摘　　要：A multi-channel polarimeter-interferometer has been developed on the Keda Torus eXperiment(KTX)for the study of equilibrium dynamics and internal magnetic fluctuations.A three-wave technique based on terahertz solid-state sources(-650 GHz)is applied for simultaneous measurements of electron density and Faraday rotation angle.The output power of the microwave source is 2 mW.Faraday rotation effect using a rotating wave plate is tested with phase noise less than 0.8°,and the density phase noise is less than 0.9°.Measurement of Faraday rotation angle and density for discharges on KTX have demonstrated high sensitivity to internal MHD activities.

关 键 词：plasma diagnostics INTERFEROMETRY TERAHERTZ POLARIMETER 

分 类 号：TL631[核科学技术—核技术及应用]