Edge-localized-modes in tokamaks

AW Leonard - Physics of Plasmas, 2014 - pubs.aip.org
Edge-localized-modes (ELMs) are a ubiquitous feature of H-mode in tokamaks. When
gradients in the H-mode transport barrier grow to exceed the MHD stability limit the ELM …

A brief review: effects of resonant magnetic perturbation on classical and neoclassical tearing modes in tokamaks

W Zhengxiong, T Weikang, WEI Lai - Plasma Science and …, 2022 - iopscience.iop.org
This paper reviews the effects of resonant magnetic perturbation (RMP) on classical tearing
modes (TMs) and neoclassical tearing modes (NTMs) from the theory, experimental …

Observation of a multimode plasma response and its relationship to density pumpout and edge-localized mode suppression

C Paz-Soldan, R Nazikian, SR Haskey, NC Logan… - Physical review …, 2015 - APS
Density pumpout and edge-localized mode (ELM) suppression by applied n= 2 magnetic
fields in low-collisionality DIII-D plasmas are shown to be correlated with the magnitude of …

Recent progress in understanding the processes underlying the triggering of and energy loss associated with type I ELMs

A Kirk, D Dunai, M Dunne, G Huijsmans… - Nuclear …, 2014 - iopscience.iop.org
Abstract The type I ELMy H-mode is the baseline operating scenario for ITER. While it is
known that the type I edge-localized mode (ELM) ultimately results from the peeling …

Effect of resonant magnetic perturbations on low collisionality discharges in MAST and a comparison with ASDEX Upgrade

A Kirk, W Suttrop, IT Chapman, Y Liu, R Scannell… - Nuclear …, 2015 - iopscience.iop.org
Sustained edge localized mode (ELM) mitigation has been achieved on MAST and AUG
using resonant magnetic perturbations (RMPs) with various toroidal mode numbers over a …

Toroidal modelling of resonant magnetic perturbations response in ASDEX-Upgrade: coupling between field pitch aligned response and kink amplification

DA Ryan, YQ Liu, A Kirk, W Suttrop… - Plasma Physics and …, 2015 - iopscience.iop.org
Using the MARS-F code (Liu et al 2000 Phys. Plasmas 7 3681), the single fluid resistive
MHD plasma response to applied n= 2 resonant magnetic perturbations is computed, for a …

The effect of plasma shape and neutral beam mix on the rotation threshold for RMP-ELM suppression

C Paz-Soldan, R Nazikian, L Cui, BC Lyons… - Nuclear …, 2019 - iopscience.iop.org
Varying the neutral beam injection (NBI) mix reveals a clear pedestal-top rotation threshold
for edge localized mode (ELM) suppression by resonant magnetic perturbations (RMPs) …

Toroidal modelling of RMP response in ASDEX Upgrade: coil phase scan, q95 dependence, and toroidal torques

Y Liu, D Ryan, A Kirk, L Li, W Suttrop, M Dunne… - Nuclear …, 2016 - iopscience.iop.org
The plasma response to the vacuum resonant magnetic perturbation (RMP) fields, produced
by the ELM control coils in ASDEX Upgrade experiments, is computationally modelled using …

Plasma response measurements of external magnetic perturbations using electron cyclotron emission and comparisons to 3D ideal MHD equilibrium

M Willensdorfer, SS Denk, E Strumberger… - Plasma Physics and …, 2016 - iopscience.iop.org
The plasma response from an external n= 2 magnetic perturbation field in ASDEX Upgrade
has been measured using mainly electron cyclotron emission (ECE) diagnostics and a rigid …

Penetration properties of applied resonant magnetic perturbation in HL-2A tokamak

X Wang, HW Zhang, WJ Chen, TF Sun, W Zhang… - Nuclear …, 2023 - iopscience.iop.org
Any arbitrary perturbation on a magnetic field separatrix can cause a structure named
homoclinic tangle in tokamaks. Both an edge localized mode (ELM) and a resonant …