Power Modulation System and Experiments of Lower Hybrid Wave on EAST | Zendy

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

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Power Modulation System and Experiments of Lower Hybrid Wave on EAST

Author(s) -

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

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2851982

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

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.

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