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Analytic stability criteria for edge MHD oscillations in high performance ELM free tokamak regimes

机译:高性能无ELM托卡马克方案中边缘MHD振荡的解析稳定性标准

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摘要

A new dispersion relation, and associated stability criteria, is derived for low-n external kink and infernal modes, and is applied to modelling the stability properties of quiescent H-mode like regimes. The analysis, performed in toroidal geometry with large edge pressure gradients associated with a local flattening of the safety factor, includes a pedestal, sheared toroidal rotation and a vacuum region separating the plasma from an ideal metallic wall. The external kink-infernal modes found here exhibit similarities with experimentally observed edge harmonic oscillations.
机译:针对低n外部扭结和地狱模式推导了新的色散关系和相关的稳定性标准,并将其用于对静态H模式类似状态的稳定性进行建模。在具有较大边缘压力梯度的环形几何形状中进行的分析与安全系数的局部变平相关联,该分析包括基座,剪切环形旋转以及将等离子体与理想金属壁分隔开的真空区域。此处发现的外部扭结-地狱模式与实验观察到的边缘谐波振荡表现出相似性。

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  • 来源
    《Nuclear fusion》 |2018年第1期|014002.1-014002.6|共6页
  • 作者单位

    Istituto di Fisica del Plasma IFP-CNR, Via R. Cozzi 53, 20125 Milano, Italy;

    Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland;

    Istituto di Fisica del Plasma IFP-CNR, Via R. Cozzi 53, 20125 Milano, Italy;

    Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland,Present address: Istituto di Fisica del Plasma IFP-CNR, Via R. Cozzi 53, 20125 Milano, Italy;

    Istituto di Fisica del Plasma IFP-CNR, Via R. Cozzi 53, 20125 Milano, Italy;

    Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland;

    Department of Physics and Astronomy, PO Box 516, Uppsala University, SE-751 20 Uppsala, Sweden;

  • 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

    magnetohydrodynamics; tokamak; infernal mode; edge harmonic oscillations;

    机译:磁流体动力学;托卡马克地狱模式边缘谐波振荡;

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