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首页> 外文期刊>Nuclear fusion >Initial experiments towards edge plasma control with a closed helical divertor in LHD
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Initial experiments towards edge plasma control with a closed helical divertor in LHD

机译：在LHD中使用封闭式螺旋偏滤器进行边缘等离子体控制的初步实验

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摘要

A baffle-structured closed helical divertor (CHD) is being constructed in the Large Helical Device to actively control the edge plasma, which consists of ten discrete modules installed on the inboard side of the torus. At this stage, two of the ten modules have been constructed. In the initial experiments, the performance of the CHD was experimentally investigated, comparing with numerical expectations. During the continuous gas puffing discharge, it was observed that the neutral pressure in the CHD was more than ten times higher than that in the open helical divertor, which agrees well with the numerical simulation. In the high-density regime, an indication of divertor detachment was observed in the CHD, which was caused by the high recycling and the high-density state in the CHD. With a Penning discharge diagnostics, the neutral particle behaviour in the mixture gas discharge was investigated, measuring hydrogen and helium pressures simultaneously. Similar compression properties were observed between two gases in the CHD, although larger recycling character was seen in helium.
机译：大型螺旋装置中正在构造一个挡板结构的闭合螺旋偏滤器（CHD），以主动控制边缘等离子体，该等离子体由安装在圆环内侧的十个离散模块组成。在这个阶段，已经构建了十个模块中的两个。在最初的实验中，通过实验研究了CHD的性能，并与数值期望值进行了比较。在连续吹气期间，观察到CHD中的中性压力比开式螺旋分流器中的中性压力高十倍以上，这与数值模拟非常吻合。在高密度状态下，在CHD中观察到偏滤器脱离的迹象，这是由于CHD中的高回收率和高密度状态引起的。使用Penning放电诊断程序，研究了混合气体放电中的中性粒子行为，同时测量了氢气和氦气压力。尽管在氦气中发现了更大的再循环特性，但在CHD中的两种气体之间观察到了相似的压缩特性。

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  • 来源
    《Nuclear fusion》 |2013年第6期|063014.1-063014.8|共8页
  • 作者

    T. Morisaki; S. Masuzaki; M. Kobayashi; M. Shoji; J. Miyazawa; R. Sakamoto; G. Motojima; M. Goto; H. Funaba; H. Tanaka; K. Tanaka; I. Yamada; S. Ohdachi; H. Yamada; A. Komori;

  • 作者单位

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

    National Institute for Fusion Science, Toki 509-5292, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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