Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments
Quasilinear modelling of RMP interaction with a tokamak plasma: application to ASDEX Upgrade ELM mitigation experiments
复制标题
DOI：
10.1088/0029-5515/54/6/064005
复制
发表时间：
2014-05
期刊：
影响因子：
3.3
通讯作者：
M. Heyn;I. Ivanov;S. Kasilov;W. Kernbichler;P. Leitner;V. Nemov;W. Suttrop
中科院分区：
文献类型：
--
作者：
M. Heyn;I. Ivanov;S. Kasilov;W. Kernbichler;P. Leitner;V. Nemov;W. Suttrop
第一个实验的边缘局域模式（ELM）缓解的帮助下，ITER类线圈ASDEX升级进行了分析，使用线性和准线性动力学模型来描述共振磁场扰动（RMP）与等离子体的相互作用。详细地给出了回旋动力学推导RMP驱动输运系数的方法。研究了流体共振的作用，特别是与平衡电场反转点Er = 0相关的共振的作用。类似于与总垂直电子流体速度的零相关联的电子流体共振，Er = 0共振可以导致增强的传输，这是由于基座区域中的RMP屏蔽的减少，其中RMP场甚至可以通过该共振被放大。讨论了由分析得到的RMP线圈谱的条件。
First experiments on edge-localized mode (ELM) mitigation with the help of ITER-like coils on ASDEX Upgrade are analysed using linear and quasilinear kinetic models to describe the interaction of resonant magnetic field perturbations (RMP) with the plasma. The gyrokinetic derivation of RMP-driven transport coefficients is given in detail. The role of fluid resonances is studied, in particular the role of the resonance associated with the equilibrium electric field reversal point Er = 0. Like the electron fluid resonance associated with the zero of the total perpendicular electron fluid velocity, the Er = 0 resonance may lead to enhanced transport due to the reduction of RMP shielding in the pedestal region where the RMP field can even be amplified by this resonance. The conditions on the RMP coil spectrum resulting from the analysis are discussed.