摘要
The limiter target electrostatic measurement system including limiter grounding current sensors and Langmuir probes have been newly developed for the measurement of the limiter target area on the Joint-Texas Experimental tokamak (J-TEXT). Current sensors fixed between graphite limiters and the vacuum vessel walls are used to measure the currents between limiters and vessel wall. Simultaneously, a rectangular poloidal array containing 54 Langmuir probes is embedded in the graphite tiles of limiters for a more localized measurement. Based on this system, the effect of both the plasma’s inherent behavior, including plasma motion and the 2/1 tearing mode, and the electrode biasing on probe and sensor signals have been observed and analyzed in the experiments.
The limiter target electrostatic measurement system including limiter grounding current sensors and Langmuir probes have been newly developed for the measurement of the limiter target area on the Joint-Texas Experimental tokamak(J-TEXT).Current sensors fixed between graphite limiters and the vacuum vessel walls are used to measure the currents between limiters and vessel wall.Simultaneously,a rectangular poloidal array containing 54 Langmuir probes is embedded in the graphite tiles of limiters for a more localized measurement.Based on this system,the effect of both the plasma’s inherent behavior,including plasma motion and the 2/1 tearing mode,and the electrode biasing on probe and sensor signals have been observed and analyzed in the experiments.
作者
Jie YANG
Zhipeng CHEN
Hai LIU
Tong WANG
Mingcong ZHU
Zebao SONG
Zhijiang WANG
Ge ZHUANG
Yonghua DING
阳杰;陈志鹏;刘海;王通;朱明聪;宋泽豹;王之江;庄革;丁永华;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;Institute of Fusion Science,School of Physical Science and Technology,Southwest Jiaotong University, Chengdu 610031,People’s Republic of China;Department of Engineering and Applied Physics School of Physical Sciences,University of Science and Technology of China,Hefei 230026,People’s Republic of China)
基金
supported by the National Magnetic Confinement Fusion Science Program of China(No.2015GB111001)
National Natural Science Foundation of China(Nos.11305070,11505069)
