The EPED pedestal model and edge localized mode-suppressed regimes: Studies of quiescent H-mode and development of a model for edge localized mode suppression via resonant magnetic perturbations
The EPED pedestal model and edge localized mode-suppressed regimes: Studies of quiescent H-mode and development of a model for edge localized mode suppression via resonant magnetic perturbations
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DOI：
10.1063/1.3699623
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发表时间：
2012-04
影响因子：
2.2
通讯作者：
P. Snyder;T. Osborne;K. Burrell;R. Groebner;A. Leonard;R. Nazikian;D. Orlov;O. Schmitz;M. Wade;H. Wilson
中科院分区：
文献类型：
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作者：
P. Snyder;T. Osborne;K. Burrell;R. Groebner;A. Leonard;R. Nazikian;D. Orlov;O. Schmitz;M. Wade;H. Wilson
EPED模型基于两个基本的和可计算的约束来预测H模式基座高度和宽度：（1）在低到中等模式数下非局部剥离-气球模式的开始，（2）在高模式数下几乎局部动力学气球模式的开始。我们提出了详细的测试EPED模型在放电与边缘局域模式（ELMs），采用新的高分辨率测量，并找到良好的定量协议在一系列参数。EPED模型，然后首次应用到静态H-模式（QH），发现预测和观察到的基座高度和宽度之间的协议类似的水平，并建议该模型可用于预测QH模式操作的临界密度。最后，该模型被应用于了解与三维共振磁扰动（RMP）的ELMs的抑制。将EPED与等离子体响应物理相结合，建立了一个新的RMP ELM抑制工作模型。我们建议，ELMs被抑制时，“墙”.
The EPED model predicts the H-mode pedestal height and width based upon two fundamental and calculable constraints: (1) onset of non-local peeling-ballooning modes at low to intermediate mode number, (2) onset of nearly local kinetic ballooning modes at high mode number. We present detailed tests of the EPED model in discharges with edge localized modes (ELMs), employing new high resolution measurements, and finding good quantitative agreement across a range of parameters. The EPED model is then applied for the first time to quiescent H-mode (QH), finding a similar level of agreement between predicted and observed pedestal height and width, and suggesting that the model can be used to predict the critical density for QH-mode operation. Finally, the model is applied toward understanding the suppression of ELMs with 3D resonant magnetic perturbations (RMP). Combining EPED with plasma response physics, a new working model for RMP ELM suppression is developed. We propose that ELMs are suppressed when a “wall”...