Investigations of plasma response associated with Resonant Magnetic Perturbation fields using perturbation method in KSTAR H-mode plasmas
Investigations of plasma response associated with Resonant Magnetic Perturbation fields using perturbation method in KSTAR H-mode plasmas
复制标题
使用 KSTAR H 模式等离子体中的微扰方法研究与共振磁微扰场相关的等离子体响应
DOI：
10.1088/1741-4326/ac4b01
复制
发表时间：
2022
期刊：
影响因子：
3.3
通讯作者：
Y.K. Oh
中科院分区：
文献类型：
--
作者：
W.W. Xiao;T.E. Evans;G.R. Tynan;D.M. Orlov;S.W. Yoon;W.H. Ko;M.W. Kim;Y.M. Jeon;Y.U. Nam;Y.K. Oh
利用调制超声分子束注入（SMBI）引起的边缘微扰，研究了KSTAR等离子体对共振磁扰动（RMP）场的响应。调制SMBI提供了一个随时间变化的扰动的等离子体密度源的区域内的最后一个封闭的通量表面和调制的流动阻尼率。观察到SMBI引起的环向旋转扰动从q= 3表面向q= 2表面的径向传播。理论分析使用一般扰动平衡代码的RMP场的RMP强度分布是一致的环形旋转扰动的相位分布。
The plasma response associated with the resonant magnetic perturbation (RMP) field was investigated using the small edge perturbations induced by a modulated supersonic molecular beam injection (SMBI) in KSTAR. The modulated SMBI provides a time-varying perturbation of the plasma density source in the region just inside the last closed flux surface and a modulated flow damping rate. Radial propagation of the toroidal rotation perturbation induced by SMBI from the q= 3 surface to the q= 2 surface was observed. Theoretical analysis using the general perturbed equilibrium code of the RMP intensity profiles of the RMP field is consistent with the phase profile of the toroidal rotation perturbation.