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Dependence of intrinsic rotation reversals on collisionality in MAST

机译:固有旋转反转对MAST中碰撞性的依赖性

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摘要

Tokamak plasmas rotate even without external injection of momentum. A Doppler backscattering system installed at MAST has allowed this intrinsic rotation to be studied in ohmic L-mode and H-mode plasmas, including the first observation of intrinsic rotation reversals in a spherical tokamak. Experimental results are compared to a novel 1D model, which captures the collisionality dependence of the radial transport of toroidal angular momentum due to the effect of neoclassical flows on turbulent fluctuations. The model is able to accurately reproduce the change in sign of core toroidal rotation, using experimental density and temperature profiles from shots with rotation reversals as inputs and no free parameters fit to experimental data.
机译:托卡马克等离子体在没有外部注入动量的情况下也会旋转。安装在MAST上的多普勒反向散射系统允许在欧姆L型和H型等离子体中研究这种固有旋转,包括首次观察到球形托卡马克固有旋转的反转。将实验结果与新型一维模型进行比较,该模型捕获了由于新古典流对湍流涨落的影响而产生的环形角动量径向传输的碰撞依赖性。该模型能够使用旋转反转的镜头的实验密度和温度曲线作为输入,并且没有适合实验数据的自由参数,从而能够精确再现芯环旋转符号的变化。

著录项

  • 来源
    《Nuclear fusion》 |2015年第3期|032003.1-032003.6|共6页
  • 作者单位

    CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK;

    CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK,Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, UK;

    CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK,Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, UK;

    University of California, Los Angeles, Los Angeles, California 90095, USA;

    CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK;

    University of California, Los Angeles, Los Angeles, California 90095, USA;

    CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK;

    CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    tokamaks; intrinsic rotation; reversals;

    机译:托卡马克内在旋转逆转;
  • 入库时间 2022-08-18 00:42:29

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