Ideal magnetohydrodynamic stability of the tokamak high-confinement-mode edge region
Ideal magnetohydrodynamic stability of the tokamak high-confinement-mode edge region
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DOI：
10.1063/1.873492
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发表时间：
1999-04
影响因子：
2.2
通讯作者：
H. Wilson;J. Connor;A. Field;S. Fielding;R. Miller;L. Lao;J. Ferron;A. Turnbull
中科院分区：
文献类型：
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作者：
H. Wilson;J. Connor;A. Field;S. Fielding;R. Miller;L. Lao;J. Ferron;A. Turnbull
理想的磁流体动力学（MHD）的托卡马克边缘的稳定性进行了分析，特别强调径向局部不稳定性，它建议，这些是负责边缘压力梯度的限制和边缘本地化模式（ELMS）。DIII-D托卡马克平衡的数据和稳定性计算[发表在第16届国际聚变能会议论文集，横滨（国际原子能机构，维也纳，1998年），论文号IAEA-F1-CN-69/EX 8/1]表明，两种类型的不稳定性是重要的：气球模式（由压力梯度驱动）和剥离模式（由电流密度驱动）。这些不稳定性的特点，以及它们的耦合，描述的基础上的圆截面，大纵横比模型的托卡马克平衡。此外，从边缘MHD稳定性代码，这是正在开发的一般几何托卡马克平衡分析的初步结果;密度阈值的解释，以访问高-…
The ideal magnetohydrodynamic (MHD) stability of the tokamak edge is analyzed, with particular emphasis on radially localized instabilities; it is proposed that these are responsible for edge pressure gradient limits and edge localized modes (ELMS). Data and stability calculations from DIII-D [to appear in Proceedings of the 16th International Conference on Fusion Energy, Yokohama (International Atomic Energy Agency, Vienna, 1998), Paper No. IAEA-F1-CN-69/EX8/1] tokamak equilibria indicate that two types of instability are important: the ballooning mode (driven by pressure gradient) and the peeling mode (driven by current density). The characteristics of these instabilities, and their coupling, are described based on a circular cross-section, large aspect ratio model of the tokamak equilibrium. In addition, preliminary results are presented from an edge MHD stability code which is being developed to analyze general geometry tokamak equilibria; an interpretation of the density threshold to access the high-...