[HTML][HTML] The density dependence of edge-localized-mode suppression and pump-out by resonant magnetic perturbations in the DIII-D tokamak

QM Hu, R Nazikian, BA Grierson, NC Logan… - Physics of …, 2019 - pubs.aip.org
The density dependence of edge-localized-mode (ELM) suppression and density pump-out
(density reduction) by n= 2 resonant magnetic perturbations (RMPs) is consistent with the …

Wide operational windows of edge-localized mode suppression by resonant magnetic perturbations in the DIII-D tokamak

QM Hu, R Nazikian, BA Grierson, NC Logan… - Physical Review Letters, 2020 - APS
Edge-localized mode (ELM) suppression by resonant magnetic perturbations (RMPs)
generally occurs over very narrow ranges of the plasma current (or magnetic safety factor q …

The role of edge resonant magnetic perturbations in edge-localized-mode suppression and density pump-out in low-collisionality DIII-D plasmas

QM Hu, R Nazikian, BA Grierson, NC Logan… - Nuclear …, 2020 - iopscience.iop.org
Two-fluid nonlinear MHD simulations using the TM1 code demonstrate that the formation of
magnetic islands at the top and bottom of the H-mode pedestal, together with the strong …

Pedestal bifurcation and resonant field penetration at the threshold of edge-localized mode suppression in the DIII-D tokamak

R Nazikian, C Paz-Soldan, JD Callen, JS DeGrassie… - Physical review …, 2015 - APS
Rapid bifurcations in the plasma response to slowly varying n= 2 magnetic fields are
observed as the plasma transitions into and out of edge-localized mode (ELM) suppression …

Predicting operational windows of ELMs suppression by resonant magnetic perturbations in the DIII-D and KSTAR tokamaks

QM Hu, R Nazikian, NC Logan, JK Park… - Physics of …, 2021 - pubs.aip.org
ABSTRACT A newly developed plasma response model, combining the nonlinear two-fluid
MHD code TM1 and toroidal MHD code GPEC run in ideal mode, quantitatively predicts the …

Increase of turbulence and transport with resonant magnetic perturbations in ELM-suppressed plasmas on DIII-D

GR McKee, Z Yan, C Holland, RJ Buttery… - Nuclear …, 2013 - iopscience.iop.org
Long-wavelength turbulence increases dramatically in the outer regions of DIII-D plasmas
with the application of resonant magnetic field perturbations (RMPs) that suppress edge …

Suppression of large edge localized modes with edge resonant magnetic fields in high confinement DIII-D plasmas

TE Evans, RA Moyer, JG Watkins, TH Osborne… - Nuclear …, 2005 - iopscience.iop.org
Large sub-millisecond heat pulses due to Type-I edge localized modes (ELMs) have been
eliminated reproducibly in DIII-D for periods approaching nine energy confinement times (τ …

Grassy-ELM regime with edge resonant magnetic perturbations in fully noninductive plasmas in the DIII-D tokamaka

R Nazikian, CC Petty, A Bortolon, X Chen… - Nuclear …, 2018 - iopscience.iop.org
Resonant magnetic perturbations (n= 3 RMPs) are used to suppress large amplitude ELMs
and mitigate naturally occurring'grassy'-ELMs in DIII-D plasmas relevant to the ITER steady …

Sustained suppression of type-I edge-localized modes with dominantly n= 2 magnetic fields in DIII-D

MJ Lanctot, RJ Buttery, JS De Grassie, TE Evans… - Nuclear …, 2013 - iopscience.iop.org
Type-I edge-localized modes (ELMs) have been suppressed in DIII-D (Luxon et al 2003
Nucl. Fusion 43 1813) H-mode discharges with a H 98Y2 confinement factor near 1.0 using …

Results from radiating divertor experiments with RMP ELM suppression and mitigation

TW Petrie, TE Evans, NH Brooks… - Nuclear …, 2011 - iopscience.iop.org
The range in density and collisionality for which resonant magnetic perturbations (RMPs)
are effective in suppressing edge-localized modes (ELMs) in the presence of a radiating …