Development of the HCN heterodyne collective scattering system on J-TEXT  

作　　者：Qinlin TAO Peng SHI Li GAO Lu WANG Zhongyong CHEN Zhonghe JIANG Yinan ZHOU Chengyu YANG Yuhan WANG Zhipeng CHEN Nengchao WANG Zhoujun YANG Yonghua DING Yuan PAN the J-TEXT Team 陶沁林;石鹏;高丽;王璐;陈忠勇;江中和;周乙楠;杨诚宇;王钰涵;陈志鹏;王能超;杨州军;丁永华;潘垣;the J-TEXT Team(International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics,State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology Wuhan 430074,People's Republic of China;United Kingdom Atomic Energy Authority,Culham Centre for Fusion Energy,Culham Science Centre,Abingdon,Oxon OX143DB,United Kingdom;Southwestern Institute of Physics,Chengdu 610041,People's Republic of China)

机构地区：[1]International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics,State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology Wuhan 430074,People's Republic of China [2]United Kingdom Atomic Energy Authority,Culham Centre for Fusion Energy,Culham Science Centre,Abingdon,Oxon OX143DB,United Kingdom [3]Southwestern Institute of Physics,Chengdu 610041,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第6期72-76,共5页等离子体科学和技术（英文版）

基　　金：the National Key R&D Program of China(Nos.2017YFE0302000,2018YFE0310300 and 2018YFE0309101);National Natural Science Foundation of China(Nos.51821005 and 11905080)。

摘　　要：A heterodyne collective scattering system has been designed and developed to investigate the turbulent transport of core plasma on J-TEXT.A dual-HCN laser which consists of two separately pumped HCN gas lasers at 337μm has been developed as the laser source of the scattering system.The intermediate frequency(IF)is~1 MHz when there is a 4μm cavity length difference and capable to maintain stability more than 5 h without manual operation.Detection channels at three different angles(2≤k_(⊥)≤12 cm^(-1))have been installed with Schottky barrier diode mixers of 893 GHz.The sampling frequency of the acquisition system is6 MHz to observe low-frequency density fluctuations.Initial experimental results have been detected and more results can be expected in future experiments.

关 键 词：collective scattering dual-HCN laser density fluctuations 

分 类 号：TL612[核科学技术—核技术及应用]