Power Modulation System and Experiments of Lower Hybrid Wave on EAST
Power Modulation System and Experiments of Lower Hybrid Wave on EAST
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DOI：
10.1109/access.2018.2851982
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发表时间：
2018
期刊：
影响因子：
3.9
通讯作者：
Mao Wang;Zege Wu;Wendong Ma;Huaichuan Hu;Jianqiang Feng;Yong Yang;Liang Liu;Lianmin Zhao;Hua Jia;Liang Zhu;Miaohui Li;Taian Zhou;M. Cheng;Li Xu;Qingquan Yang;Guosheng Xu;B. Ding;J. Shan;Fukun Liu
中科院分区：
文献类型：
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作者：
Mao Wang;Zege Wu;Wendong Ma;Huaichuan Hu;Jianqiang Feng;Yong Yang;Liang Liu;Lianmin Zhao;Hua Jia;Liang Zhu;Miaohui Li;Taian Zhou;M. Cheng;Li Xu;Qingquan Yang;Guosheng Xu;B. Ding;J. Shan;Fukun Liu
为了满足不同物理实验的要求，在实验先进超导托卡马克（EAST）装置上提出了一种新的低杂波功率调制方法，包括软硬件相结合的控制源的研制。这种调制系统是由位于振荡器的主正-本征-负二极管开关实现的。LHW调制系统已经安装和测试，表明调制参数可以灵活控制。最大调制频率约为10 kHz，这受到硬件电路速度的限制。该系统已成功地用于研究低杂波对等离子体性能的影响。在LHW的调制下，观察到边缘局域模（ELM）的强烈减轻，并证明了ELM起搏技术。将在EAST中继续对调制系统进行进一步的实验研究。
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.