Recent progress on the J-TEXT three-wave polarimeter-interferometer  

作　　者：Yuhan WANG Li GAO Peng SHI Xin XU Yinan ZHOU Qinglong YANG Chengyu YANG Qinlin TAO Chengshuo SHEN Yajun WANG Lu WANG Zhipeng CHEN Donghui XIA Zhongyong CHEN Nengchao WANG Zhoujun YANG Yonghua DING Yuan PAN J-TEXT Team 王钰涵;高丽;石鹏;徐鑫;周乙楠;杨庆龙;杨诚宇;陶沁林;沈呈硕;汪亚军;王璐;陈志鹏;夏冬辉;陈忠勇;王能超;杨州军;丁永华;潘垣;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)

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

出　　处：《Plasma Science and Technology》2022年第6期1-6,共6页等离子体科学和技术（英文版）

基　　金：the National MCF Energy R&D Program of China(No.2018YFE0310300);National Natural Science Foundation of China(Nos.11905080 and 51821005)。

摘　　要：The J-TEXT three-wave polarimeter-interferometer system(POLARIS),which measures timespace distribution of electron density and current density,has been optimized with both the optical system and the equilibrium reconstruction method.The phase resolution of a Faraday rotation angle has been improved from 0.1 to 0.06 degree in chords from–0.18 to 0.18 m(plasma minor radius),and the sawtooth oscillation behavior has been detected by Faraday rotation angle measurement.By combining the POLARIS measured data and the equilibrium and fitting code(EFIT),an upgraded equilibrium reconstruction method has been developed,which provides a more accurate temporal and spatial distribution of current density and electron density.By means of the optimized POLARIS and improved equilibrium reconstruction,variations of profiles with increasing density have been carried out,under both Ohmic and electron cyclotron resonance heating discharges.

关 键 词：current density profile EFIT POLARIMETERS 

分 类 号：TL631.24[核科学技术—核技术及应用]