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Drift kinetic effects on plasma response in high beta spherical tokamak experiments

机译：高β球形托卡马克实验中漂移动力学对血浆反应的影响

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摘要

The high β plasma response to rotating n = 1 external magnetic perturbations is numerically studied and compared with the National Spherical Torus Experiment (NSTX). The hybrid magnetohydrodynamic(MHD)-kinetic modeling shows that drift kinetic effects are important in resolving the disagreement of plasma response between the ideal MHD prediction and the NSTX experimental observation when plasma pressure reaches and exceeds the no-wall limit (Troyon et al 1984 Plasma Phys. Control. Fusion 26 209). Since the external rotating fields and high plasma rotation are presented in the NSTX experiments, the importance of the resistive wall effect and plasma rotation in determining the plasma response is also identified, where the resistive wall suppresses the plasma response through the wall eddy current. The inertial energy due to plasma rotation destabilizes the plasma. The complexity of the plasma response in this study indicates that MHD modeling, including comprehensive physics, e.g. the drift kinetic effects, resistive wall and plasma rotation, are essential in order to reliably predict the plasma behavior in a high beta spherical tokamak device.
机译：数值研究了对旋转n = 1的外部磁扰动的高β等离子体响应，并将其与美国国家球形圆环实验（NSTX）进行了比较。混合磁流体动力学（MHD）-动力学模型表明，当血浆压力达到和超过无壁极限时，漂移动力学效应对于解决理想MHD预测与NSTX实验观察之间的血浆反应差异很重要（Troyon等人1984年Plasma Phys.Fusion 26 209）。由于在NSTX实验中显示了外部旋转场和高等离子体旋转，因此还确定了电阻壁效应和等离子体旋转在确定等离子体响应中的重要性，其中电阻壁通过壁涡流抑制了等离子体响应。由于等离子体旋转而产生的惯性能量使等离子体不稳定。这项研究中等离子体反应的复杂性表明，MHD建模包括全面的物理过程，例如为了可靠地预测高β球形托卡马克装置中的等离子体行为，漂移动力学效应，电阻壁和等离子体旋转必不可少。

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  • 来源
    《Nuclear fusion》 |2018年第1期|016015.1-016015.10|共10页
  • 作者

    Zhirui Wang; Jong-Kyu Park; Jonathan E. Menard; Yueqiang Liu; Stanley M. Kaye; Stefan Gerhardt;

  • 作者单位

    Princeton Plasma Physics Laboratory Princeton, NJ 08543, United States of America;

    Princeton Plasma Physics Laboratory Princeton, NJ 08543, United States of America;

    Princeton Plasma Physics Laboratory Princeton, NJ 08543, United States of America;

    General Atomics, PO Box 85608, San Diego, CA 92186-5608, United States of America;

    Princeton Plasma Physics Laboratory Princeton, NJ 08543, United States of America;

    Princeton Plasma Physics Laboratory Princeton, NJ 08543, United States of America;

  • 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

    kinetic effects; plasma response; spherical tokamak; NSTX;

    机译：动力学效应血浆反应球形托卡马克NSTX;

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