极向偏转托卡马克中的共振磁扰动和偏滤器足迹
Resonant magnetic perturbations and divertor footprints in poloidally diverted tokamaks
摘要：
本文导出了极向偏转托卡马克平衡中偏滤器撞击点分裂和共振磁扰动（RMP）产生的磁岛宽度的一般公式。假设RMP是由线圈在低场侧，如用于控制边缘局域模（ELMs）的线圈产生的，它被证明是在边缘的不同磁表面上的岛的宽度和偏滤器分裂的量是相互关联的。解释提供了对齐的最大值的扰动光谱与安全系数的配置文件-经验上观察到的效果在模型中的许多扰动线圈设计。
英文摘要：
General formula describing both the divertor strike point splitting and width of magnetic islands created by resonant magnetic perturbations (RMPs) in a poloidally diverted tokamak equilibrium is derived. Under the assumption that the RMP is produced by coils at the low-field side such as those used to control edge localized modes (ELMs) it is demonstrated that the width of islands on different magnetic surfaces at the edge and the amount of divertor splitting are related to each other. Explanation is provided of aligned maxima of the perturbation spectra with the safety factor profile - an effect empirically observed in models of many perturbation coil designs.
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