Three-dimensional corrugation of the plasma edge when magnetic perturbations are applied for edge-localized mode control in MAST
Three-dimensional corrugation of the plasma edge when magnetic perturbations are applied for edge-localized mode control in MAST
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DOI：
10.1088/0741-3335/54/10/105013
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发表时间：
2012-09
影响因子：
2.2
通讯作者：
I. Chapman;W. A. Cooper;A. Kirk;C. Ham;J. Harrison;A. Patel;S. Pinches;R. Scannell;A. Thornton
中科院分区：
文献类型：
--
作者：
I. Chapman;W. A. Cooper;A. Kirk;C. Ham;J. Harrison;A. Patel;S. Pinches;R. Scannell;A. Thornton
在主H模等离子体中测量了施加三维共振磁微扰(RMPs)时等离子体边界的变形。当n=3个RMP用于控制边缘局域模式(ELM)时，等离子体经历了强烈的环向波纹。在不同的环形位置测量了等离子体边界的位移，发现在外加磁场大小时，等离子体边界的位移约为小半径的5%，这将减轻ELMS。实验观察到的等离子体边缘位置的波纹与三维理想等离子体平衡重建很好地吻合。
The distortion of the plasma boundary when three-dimensional resonant magnetic perturbations (RMPs) are applied has been measured in MAST H-mode plasmas. When the n = 3 RMPs are applied to control edge-localized modes (ELMs), the plasma experiences a strong toroidal corrugation. The displacement of the plasma boundary is measured at various toroidal locations and found to be of the order of 5% of the minor radius for an applied field magnitude which mitigates ELMs. The empirically observed corrugation of the plasma edge position agrees well with three-dimensional ideal plasma equilibrium reconstruction.