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首页> 外文期刊>Nuclear fusion >Generation of initial closed flux surfaces by ECH at a conventional aspect ratio of R/α～ 3: experiments on the LATE device and JT-60U tokamak
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Generation of initial closed flux surfaces by ECH at a conventional aspect ratio of R/α～ 3: experiments on the LATE device and JT-60U tokamak

机译：在常规纵横比为R /α〜3的情况下，通过ECH生成初始封闭通量表面：在LATE装置和JT-60U托卡马克上进行的实验

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摘要

Generation of initial closed flux surfaces by electron cyclotron heating (ECH) at a conventional aspect ratio of R/a ~ 3 is investigated on the Low Aspect ratio Torus Experiment (LATE) device and further tested on the Japan Atomic Energy Research Institute Tokamak-60 Upgrade (JT-60U) tokamak. In both experiments, a plasma current is initiated and increased by ECH under steady external fields composed of a toroidal field and a weak vertical field. In the LATE experiments, a movable inboard limiter is used to change the aspect ratio of plasmas up to R/a ~ 3. The results show that the formation of closed flux surfaces is still possible up to R/a ~ 3 while higher decay indices of vertical field are required as the aspect ratio increases. Similar current start-up discharges are performed on JT-60U, and a plasma current is initiated and increased up to 20 kA under a vertical field having a high decay index.
机译：在低纵横比圆环实验（LATE）装置上研究了以传统纵横比R / a〜3通过电子回旋加速器（ECH）产生的初始封闭通量表面，并在日本原子能研究院Tokamak-60上进行了进一步测试升级（JT-60U）托卡马克。在这两个实验中，在由环形场和弱垂直场组成的稳定外部场下，ECH引发并增加了等离子体电流。在LATE实验中，使用可移动的内侧限制器将等离子体的长宽比更改为R / a〜3。结果表明，在R / a〜3时，仍可能形成闭合的通量表面，同时具有更高的衰减指数随着纵横比的增加，需要垂直场的变化。在JT-60U上执行类似的电流启动放电，并在具有高衰减指数的垂直场下启动等离子体电流并将其增加到20 kA。

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  • 来源
    《Nuclear fusion》 |2011年第6期|p.33.1-33.9|共9页
  • 作者

    M. Uchida; T. Maekawa; H. Tanaka; S. Ide; Y. Takase; F. Watanabe; S. Nishi;

  • 作者单位

    Graduate School of Energy Science, Kyoto University, Kyoto 606-8502, Japan;

    Graduate School of Energy Science, Kyoto University, Kyoto 606-8502, Japan;

    Graduate School of Energy Science, Kyoto University, Kyoto 606-8502, Japan;

    Japan Atomic Energy Agency, Naka 311-0193, Japan;

    Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan;

    Graduate School of Energy Science, Kyoto University, Kyoto 606-8502, Japan;

    Graduate School of Energy Science, Kyoto University, Kyoto 606-8502, 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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  • 正文语种 eng
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