Initial operation of high power ICRF system for long pulse in EAST
Initial operation of high power ICRF system for long pulse in EAST
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DOI：
10.1063/1.4936484
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
C. Qin;Y. Zhao;X. Zhang;B. Wan;X. Gong;Y. Mao;S. Yuan;G. Chen
中科院分区：
文献类型：
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作者：
C. Qin;Y. Zhao;X. Zhang;B. Wan;X. Gong;Y. Mao;S. Yuan;G. Chen
EAST上的ICRF加热系统采用主动冷却技术，旨在实现长脉冲运行。本文介绍了ICRF系统的主要技术特点。长脉冲操作的主要挑战之一是RF边缘相互作用引起的杂质产生和热负载。在EAST中，发现了LH电子束对ICRF天线的保护和对法拉第屏栅的破坏，并讨论了LHCD与ICRF天线相互作用的初步分析结果。还示出了在RF脉冲期间和在较大的芯辐射中等离子体中的金属杂质的增加。这些RF边缘的相互作用在EAST和优化RF性能的一些初步结果将被提交。
The ICRF heating system on EAST upgraded by active cooling aims for long pulse operation. In this paper, the main technical features of the ICRF system are described. One of a major challenges for long pulse operation is RF-edge interactions induced impurity production and heat loading. In EAST, ICRF antenna protections and Faraday screen bars damaged due to LH electron beam are found. Preliminary results for the analysis of the interaction between LHCD and ICRF antenna are discussed. Increase of metal impurities in the plasma during RF pulse and in a larger core radiation are also shown. These RF-edge interactions at EAST and some preliminary results for the optimizing RF performance will be presented.