Power Modulation System and Experiments of Lower Hybrid Wave on EAST

Mao Wang; Zege Wu; Wendong Ma; Huaichuan Hu; Jianqiang Feng; Yong Yang; Liang Liu; Lianmin Zhao; Hua Jia; Liang Zhu; Miaohui Li; Taian Zhou; Min Cheng; Li Xu; Qingquan Yang; Guosheng Xu; Bojiang Ding; Jiafang Shan; Fukun Liu

doi:10.1109/ACCESS.2018.2851982

IEEE Access (Jan 2018)

Power Modulation System and Experiments of Lower Hybrid Wave on EAST

Mao Wang,
Zege Wu,
Wendong Ma,
Huaichuan Hu,
Jianqiang Feng,
Yong Yang,
Liang Liu,
Lianmin Zhao,
Hua Jia,
Liang Zhu,
Miaohui Li,
Taian Zhou,
Min Cheng,
Li Xu,
Qingquan Yang,
Guosheng Xu,
Bojiang Ding,
Jiafang Shan,
Fukun Liu

Affiliations

Mao Wang: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Zege Wu: ORCiD; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Wendong Ma: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Huaichuan Hu: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Jianqiang Feng: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Yong Yang: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Liang Liu: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Lianmin Zhao: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Hua Jia: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Liang Zhu: ORCiD; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Miaohui Li: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Taian Zhou: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Min Cheng: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Li Xu: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Qingquan Yang: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Guosheng Xu: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Bojiang Ding: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Jiafang Shan: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
Fukun Liu: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China

DOI: https://doi.org/10.1109/ACCESS.2018.2851982
Journal volume & issue: Vol. 6
pp. 37413 – 37417

Abstract

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To satisfy various requirements of different physics experiments, a new power modulation method of the lower hybrid wave (LHW) has been developed in Experimental Advanced Superconducting Tokamak (EAST), including the development of a control source combining software and hardware. Such modulation system is realized by the main positive-intrinsic-negative diode switch located at the oscillator. The LHW modulation system has been installed and tested, demonstrating that the modulation parameters can be controlled flexibly. The maximal modulation frequency is about 10 kHz, which is limited by the hardware circuit speed. The system has been successfully used to study the influence of LHW on the performances of plasma. Under the modulation of LHW, strong mitigation of edge-localized modes (ELMs) has been observed, and ELM pace-making technique has been demonstrated. Further experimental studies with the modulation system will be continued in EAST.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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