Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Screening of resonant magnetic perturbation fields assuming various plasma flow models

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/5.0057338· OSTI ID:1849028
 [1];  [2];  [3];  [4];  [5];  [5];  [4]
  1. Donghua Univ., Shanghai (China). College of Science; Ministry of Education, Shanghai (China). Member of Magnetic Confinement Fusion Research Centre; Donghua Univ., Shanghai (China)
  2. General Atomics, San Diego, CA (United States)
  3. Culham Science Centre, Abingdon (United Kingdom). CCFE
  4. Donghua Univ., Shanghai (China). College of Science; Ministry of Education, Shanghai (China). Member of Magnetic Confinement Fusion Research Centre
  5. Dalian Univ. of Technology (China). Faculty of Electronic information and Electrical Engineering
A recently updated version of the MARS-F code [Y. Q. Liu et al., Phys. Plasmas 7, 3681 (2000); L. Li et al., Phys. Plasmas 25, 082512 (2018); and G. L. Xia et al., Nucl. Fusion 59, 126035 (2019)] is utilized to numerically investigate the plasma screening effect on the applied resonant magnetic perturbation (RMP) field, assuming various equilibrium flow models, including the toroidal flow, the parallel flow and their combinations, and poloidal and toroidal projections of the parallel flow. A parallel equilibrium flow with a uniform radial profile is found to have no effect on plasma screening of the RMP field. A sheared parallel flow, however, does change plasma screening. The poloidal projection of the parallel flow weakens plasma screening in the resistive-inertial regime. The effect on the favorable average curvature regime is found, however, to be non-monotonic. With the increasing flow speed, the poloidal projection first weakens Glasser-Green-Johnson (GGJ)-screening. Further increase in the flow speed results in enhanced GGJ-screening again. This non-monotonic behavior is related to the perturbed parallel shielding current, which appears also off the mode rational surface at fast flow due to additional resonances between the RMP perturbation and the sound wave continuum. These results indicate that flow induced plasma screening to the RMP field can have complicated characteristics, which, in turn, can have implications on the RMP field penetration into the plasma in experiments for controlling the edge localized modes.
Research Organization:
General Atomics, San Diego, CA (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC)
Grant/Contract Number:
FC02-04ER54698; FG02-95ER54309
OSTI ID:
1849028
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 28; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (54)

Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas journal May 2006
Drift-magnetohydrodynamical model of error-field penetration in tokamak plasmas journal March 2006
Interpretation of edge pedestal rotation measurements in DIII-D journal January 2008
Validation of the linear ideal magnetohydrodynamic model of three-dimensional tokamak equilibria journal March 2010
Full toroidal plasma response to externally applied nonaxisymmetric magnetic fields journal December 2010
Impact of plasma poloidal rotation on resistive wall mode instability in toroidally rotating plasmas journal February 2011
Measurement and modeling of three-dimensional equilibria in DIII-D journal May 2011
Calculations of two-fluid linear response to non-axisymmetric fields in tokamaks journal May 2012
Toroidal curvature induced screening of external fields by a resistive plasma response journal July 2012
Comparisons of linear and nonlinear plasma response models for non-axisymmetric perturbations journal May 2013
Three-dimensional equilibria and island energy transport due to resonant magnetic perturbation edge localized mode suppression on DIII-D journal November 2015
Validation of the model for ELM suppression with 3D magnetic fields using low torque ITER baseline scenario discharges in DIII-D journal October 2017
Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field journal October 2017
Screening of resonant magnetic perturbation fields by poloidally varying toroidal plasma rotation journal August 2018
Two-fluid nonlinear theory of response of tokamak plasma to resonant magnetic perturbation journal November 2018
The interaction of resonant magnetic perturbations with rotating plasmas journal March 1991
Resistive instabilities in general toroidal plasma configurations journal January 1975
Optimal design of feedback coils for the control of external modes in tokamaks journal June 1998
Bifurcated states of a rotating tokamak plasma in the presence of a static error-field journal September 1998
Resistive contributions to the stability of DIII-D ITER baseline demonstration discharges journal April 2021
Error field mode studies on JET, COMPASS-D and DIII-D, and implications for ITER journal November 1999
Active feedback stabilization of high beta modes in advanced tokamaks journal April 2001
Feedback control of resistive wall modes in toroidal devices journal December 2003
Toroidal and poloidal momentum transport studies in JET journal August 2007
Kinetic estimate of the shielding of resonant magnetic field perturbations by the plasma in DIII-D journal January 2008
Principal physics developments evaluated in the ITER design review journal May 2009
Physics of penetration of resonant magnetic perturbations used for Type I edge localized modes suppression in tokamaks journal July 2009
Resonant magnetic perturbation experiments on MAST using external and internal coils for ELM control journal February 2010
Error field correction in DIII-D Ohmic plasmas with either handedness journal January 2011
The impact of 3D fields on tearing mode stability of H-modes journal May 2011
Modelling of plasma response to resonant magnetic perturbation fields in MAST and ITER journal June 2011
Role of singular layers in the plasma response to resonant magnetic perturbations journal July 2012
The interaction between fishbone modes and shear Alfvén waves in tokamak plasmas journal April 2016
Three-dimensional modeling of plasma edge transport and divertor fluxes during application of resonant magnetic perturbations on ITER journal May 2016
Screening of external magnetic perturbation fields due to sheared plasma flow journal July 2016
Influence of rotation profiles on stabilization of resistive wall modes journal October 2001
Study on resistive wall mode based on plasma response model journal June 2006
Resistive wall mode control code maturity: progress and specific examples journal September 2010
Stabilization of the external kink and the resistive wall mode journal October 2010
Modelling intrinsic error field correction experiments in MAST journal August 2014
Linear ideal MHD predictions for n = 2 non-axisymmetric magnetic perturbations on DIII-D journal February 2014
Effects of resistivity and rotation on the linear plasma response to non-axisymmetric magnetic perturbations on DIII-D journal January 2015
Effects of magnetic islands on resonant field penetration and toroidal torques at slow plasma flow journal September 2017
Experimental conditions to suppress edge localised modes by magnetic perturbations in the ASDEX Upgrade tokamak journal July 2018
Effects of poloidal and parallel flows on resistive wall mode instability in toroidally rotating plasmas journal October 2019
Modification of favorable average curvature effect by changing parallel sound wave behavior in tokamak plasmas journal April 2021
Observation of a Complex Multistage Transition in the JT-60U H -mode Edge journal July 2010
First Observation of Edge Localized Modes Mitigation with Resonant and Nonresonant Magnetic Perturbations in ASDEX Upgrade journal June 2011
Suppression of Edge Localized Modes in High-Confinement KSTAR Plasmas by Nonaxisymmetric Magnetic Perturbations journal July 2012
Three-Dimensional Drift Kinetic Response of High- β Plasmas in the DIII-D Tokamak journal April 2015
Nonlinear Transition from Mitigation to Suppression of the Edge Localized Mode with Resonant Magnetic Perturbations in the EAST Tokamak journal September 2016
Error Field Amplification and Rotation Damping in Tokamak Plasmas journal May 2001
Poloidal Rotation Dynamics, Radial Electric Field, and Neoclassical Theory in the Jet Internal-Transport-Barrier Region journal October 2005
Active Control of Type-I Edge-Localized Modes with n = 1 Perturbation Fields in the JET Tokamak journal June 2007

Similar Records

Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field
Journal Article · Wed Sep 20 20:00:00 EDT 2017 · Physics of Plasmas · OSTI ID:1399659

Screening of resonant magnetic perturbation fields by poloidally varying toroidal plasma rotation
Journal Article · Mon Aug 13 20:00:00 EDT 2018 · Physics of Plasmas · OSTI ID:1540246

Modification of favorable average curvature effect by changing parallel sound wave behavior in tokamak plasmas
Journal Article · Thu Apr 29 00:00:00 EDT 2021 · Nuclear Fusion · OSTI ID:1849034