The application of limiter target electrostatic measurement system in J-TEXT tokamak

Jie YANG (阳杰); Zhipeng CHEN (陈志鹏); Hai LIU (刘海); Tong WANG (王通); Mingcong ZHU (朱明聪); Zebao SONG (宋泽豹); Zhijiang WANG (王之江); Ge ZHUANG (庄革); Yonghua DING (丁永华); the J-TEXT Team

doi:10.1088/2058-6272/ab2e7f

Plasma Science and Technology > 2019 > 21(10): 105105. > DOI: 10.1088/2058-6272/ab2e7f

Jie YANG (阳杰), Zhipeng CHEN (陈志鹏), Hai LIU (刘海), Tong WANG (王通), Mingcong ZHU (朱明聪), Zebao SONG (宋泽豹), Zhijiang WANG (王之江), Ge ZHUANG (庄革), Yonghua DING (丁永华), the J-TEXT Team. The application of limiter target electrostatic measurement system in J-TEXT tokamak[J]. Plasma Science and Technology, 2019, 21(10): 105105. DOI: 10.1088/2058-6272/ab2e7f

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The application of limiter target electrostatic measurement system in J-TEXT tokamak

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 Institute of Fusion Science, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, People’s Republic of China
³ Department of Engineering and Applied Physics School of Physical Sciences, University of Science and Technology of China, Hefei 230026, People’s Republic of China

Funds: This work is supported by the National Magnetic Confinement Fusion Science Program of China (No. 2015GB111001) and National Natural Science Foundation of China (Nos. 11305070, 11505069).

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Received Date: May 10, 2019
Revised Date: June 30, 2019
Accepted Date: July 01, 2019

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Abstract

Abstract

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.
- limiter target,
- electrostatic fluctuations,
- Langmuir probe,
- edge current,
- J-TEXT

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References (22)

References

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2.	Yang, J., Liang, Y., Shi, P. et al. Dynamic characteristics of edge plasma profiles during the opening of edge islands on the J-TEXT tokamak. Nuclear Fusion, 2024, 64(5): 056030. DOI:10.1088/1741-4326/ad37cc
3.	Yang, J., Liang, Y., Wang, N.C. et al. First observation of beta-induced Alfvén eigenmode inside the edge magnetic island on the J-TEXT tokamak. Nuclear Fusion, 2024, 64(2): 024001. DOI:10.1088/1741-4326/ad1788
4.	Zhang, W.-B., Liu, S.-C., Liao, L. et al. Development of charge-discharge circuitry based on supercapacitor and its application to limiter probe diagnostics in EAST \| [基于超级电容器的充放电电路系统研制及其在 EAST 限制器探针测量中的应用]. Wuli Xuebao/Acta Physica Sinica, 2024, 73(6): 065203. DOI:10.7498/aps.73.20231697
5.	Liang, Y., Chen, Z., Wang, N. et al. Towards advanced divertor configurations on the J-TEXT tokamak. Plasma Science and Technology, 2022, 24(12): 124021. DOI:10.1088/2058-6272/acaa8d
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7.	Liu, S.C., Liao, L., Wei, W.Y. et al. Development and application of limiter Langmuir probe array in EAST. Fusion Engineering and Design, 2022. DOI:10.1016/j.fusengdes.2022.113162
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The application of limiter target electrostatic measurement system in J-TEXT tokamak