Effects of RMP-induced changes of radial electric fields on microturbulence in DIII-D pedestal top

Taimourzadeh, Sam; Shi, Lei; Lin, Zhihong; Nazikian, Raffi; Holod, Ihor; Spong, Donald A.

doi:10.1088/1741-4326/aafe3a

Title: Effects of RMP-induced changes of radial electric fields on microturbulence in DIII-D pedestal top

Journal Article · Mon Jan 14 00:00:00 EST 2019 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/aafe3a· OSTI ID:1492930

Taimourzadeh, Sam ^[1]; Shi, Lei ^[1]; Lin, Zhihong ^[1]; Nazikian, Raffi ^[2]; Holod, Ihor ^[3];

^[4]

Univ. of California, Irvine, CA (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Gyrokinetic simulations of DIII-D tokamak with axisymmetric equilibrium show that the reduction in the radial electric field shear at the top of the pedestal during edge localized mode (ELM) suppression with the n = 2 resonant magnetic perturbations (RMPs) leads to enhanced drift-wave turbulence and extended turbulence spreading to the top of the pedestal relative to ELMing plasmas with similar RMP and pedestal parameters. The simulated turbulent transport at the top of the pedestal in ELM suppressed conditions is consistent with experimental observations of enhanced turbulence at the top of the pedestal during ELM suppression by the RMPs. Furthermore, these results suggest that enhanced drift-wave turbulence due to reduced E × B shear at the pedestal top can contribute to the additional transport required to prevent the pedestal growing to a width that is unstable to ELMs.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: FC02-04ER54698; SC0013804; AC02-09CH11466; AC52-07NA27344; AC05-00OR22725

OSTI ID:: 1492930

Alternate ID(s):: OSTI ID: 1648970

Journal Information:: Nuclear Fusion, Vol. 59, Issue 4; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 21 works

Citation information provided by
Web of Science

References (24)

Suppression of Edge Localized Modes in High-Confinement KSTAR Plasmas by Nonaxisymmetric Magnetic Perturbations Jeon, Y. M.; Park, J. -K.; Yoon, S. W. Physical Review Letters, Vol. 109, Issue 3 https://doi.org/10.1103/PhysRevLett.109.035004	journal	July 2012
Global gyrokinetic particle simulations with kinetic electrons Lin, Z.; Nishimura, Y.; Xiao, Y. Plasma Physics and Controlled Fusion, Vol. 49, Issue 12B https://doi.org/10.1088/0741-3335/49/12B/S15	journal	November 2007
Turbulence spreading and transport scaling in global gyrokinetic particle simulations Lin, Z.; Hahm, T. S. Physics of Plasmas, Vol. 11, Issue 3 https://doi.org/10.1063/1.1647136	journal	March 2004
Suppression of large edge localized modes in high confinement DIII-D plasmas with a stochastic magnetic boundary Evans, T. E.; Moyer, R. A.; Watkins, J. G. Journal of Nuclear Materials, Vol. 337-339 https://doi.org/10.1016/j.jnucmat.2004.10.062	journal	March 2005
Microturbulence in DIII-D tokamak pedestal. I. Electrostatic instabilities Fulton, D. P.; Lin, Z.; Holod, I. Physics of Plasmas, Vol. 21, Issue 4 https://doi.org/10.1063/1.4871387	journal	April 2014
Gyrokinetic approach in particle simulation Lee, W. W. Physics of Fluids, Vol. 26, Issue 2 https://doi.org/10.1063/1.864140	journal	January 1983
Advances in the physics understanding of ELM suppression using resonant magnetic perturbations in DIII-D Wade, M. R.; Nazikian, R.; deGrassie, J. S. Nuclear Fusion, Vol. 55, Issue 2 https://doi.org/10.1088/0029-5515/55/2/023002	journal	January 2015
Foundations of nonlinear gyrokinetic theory Brizard, A. J.; Hahm, T. S. Reviews of Modern Physics, Vol. 79, Issue 2 https://doi.org/10.1103/RevModPhys.79.421	journal	April 2007
Verification of electromagnetic fluid-kinetic hybrid electron model in global gyrokinetic particle simulation Holod, I.; Lin, Z. Physics of Plasmas, Vol. 20, Issue 3 https://doi.org/10.1063/1.4798392	journal	March 2013
Increase of turbulence and transport with resonant magnetic perturbations in ELM-suppressed plasmas on DIII-D McKee, G. R.; Yan, Z.; Holland, C. Nuclear Fusion, Vol. 53, Issue 11 https://doi.org/10.1088/0029-5515/53/11/113011	journal	September 2013
A conservative scheme of drift kinetic electrons for gyrokinetic simulation of kinetic-MHD processes in toroidal plasmas Bao, J.; Liu, D.; Lin, Z. Physics of Plasmas, Vol. 24, Issue 10 https://doi.org/10.1063/1.4995455	journal	October 2017
Microturbulence in DIII-D tokamak pedestal. III. Effects of collisions Liao, X.; Lin, Z.; Holod, I. Physics of Plasmas, Vol. 23, Issue 12 https://doi.org/10.1063/1.4972079	journal	December 2016
Edge-Localized Mode Control and Transport Generated by Externally Applied Magnetic Perturbations Joseph, I. Contributions to Plasma Physics, Vol. 52, Issue 5-6 https://doi.org/10.1002/ctpp.201210014	journal	June 2012
Validation of the model for ELM suppression with 3D magnetic fields using low torque ITER baseline scenario discharges in DIII-D Moyer, R. A.; Paz-Soldan, C.; Nazikian, R. Physics of Plasmas, Vol. 24, Issue 10 https://doi.org/10.1063/1.5000276	journal	October 2017
Gyrokinetic particle simulation model Lee, W. W. Journal of Computational Physics, Vol. 72, Issue 1 https://doi.org/10.1016/0021-9991(87)90080-5	journal	September 1987
Steepest-descent moment method for three-dimensional magnetohydrodynamic equilibria Hirshman, S. P. Physics of Fluids, Vol. 26, Issue 12 https://doi.org/10.1063/1.864116	journal	January 1983
First Observation of Edge Localized Modes Mitigation with Resonant and Nonresonant Magnetic Perturbations in ASDEX Upgrade Suttrop, W.; Eich, T.; Fuchs, J. C. Physical Review Letters, Vol. 106, Issue 22 https://doi.org/10.1103/PhysRevLett.106.225004	journal	June 2011
Active Control of Type-I Edge-Localized Modes with $n = 1$ Perturbation Fields in the JET Tokamak Liang, Y.; Koslowski, H. R.; Thomas, P. R. Physical Review Letters, Vol. 98, Issue 26 https://doi.org/10.1103/PhysRevLett.98.265004	journal	June 2007
Turbulent Transport Reduction by Zonal Flows: Massively Parallel Simulations Lin, Z. Science, Vol. 281, Issue 5384 https://doi.org/10.1126/science.281.5384.1835	journal	September 1998
Drift waves and transport Horton, W. Reviews of Modern Physics, Vol. 71, Issue 3 https://doi.org/10.1103/RevModPhys.71.735	journal	April 1999
Gyrokinetic particle simulation of microturbulence for general magnetic geometry and experimental profiles Xiao, Yong; Holod, Ihor; Wang, Zhixuan Physics of Plasmas, Vol. 22, Issue 2 https://doi.org/10.1063/1.4908275	journal	February 2015
Observation of Plasma Toroidal-Momentum Dissipation by Neoclassical Toroidal Viscosity Zhu, W.; Sabbagh, S. A.; Bell, R. E. Physical Review Letters, Vol. 96, Issue 22 https://doi.org/10.1103/PhysRevLett.96.225002	journal	June 2006
Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices Burrell, K. H. Physics of Plasmas, Vol. 4, Issue 5 https://doi.org/10.1063/1.872367	journal	May 1997
Microturbulence in DIII-D tokamak pedestal. IV. Electrostatic turbulent transport Liao, X.; Lin, Z.; Holod, I. Physics of Plasmas, Vol. 23, Issue 12 https://doi.org/10.1063/1.4972080	journal	December 2016

Cited By (3)

Kinetic particle simulations in a global toroidal geometry De, S.; Singh, T.; Kuley, A. Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5108684	journal	August 2019
The density dependence of edge-localized-mode suppression and pump-out by resonant magnetic perturbations in the DIII-D tokamak Hu, Q. M.; Nazikian, R.; Grierson, B. A. Physics of Plasmas, Vol. 26, Issue 12 https://doi.org/10.1063/1.5134767	journal	December 2019
The effect of plasma shape and neutral beam mix on the rotation threshold for RMP-ELM suppression Paz-Soldan, C.; Nazikian, R.; Cui, L. Nuclear Fusion, Vol. 59, Issue 5 https://doi.org/10.1088/1741-4326/ab04c0	journal	March 2019

Similar Records

Effects of resonant magnetic perturbations on radial electric fields in DIII-D tokamak

Journal Article · Fri Aug 27 00:00:00 EDT 2021 · Plasma Science and Technology · OSTI ID:1492930

Fu, Jingyuan; Liu, Pengfei; Wei, Xishuo; +3 more

Advances in the Understanding of ELM Suppression by Resonant Magnetic Perturbations (RMPs) in DIII-D and Implications for ITER

Conference · Mon Sep 01 00:00:00 EDT 2014 · 25th IAEA Fusion Energy Conference Proceedings on IAEA Physics website · OSTI ID:1492930

Nazikian, R.

Increased electron temperature turbulence during suppression of edge localized mode by resonant magnetic perturbations in the DIII-D tokamak [Increased electron temperature turbulence during edge localized mode (ELM) suppression by resonant magnetic perturbations (RMPs) in the DIII-D tokamak]

Journal Article · Thu Nov 16 00:00:00 EST 2017 · Physics of Plasmas · OSTI ID:1492930

Sung, Choongki; Wang, G.; Rhodes, Terry L.; +10 more

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
RMP turbulence
E x B shear
edge localized modes
resonant magnetic pertubations
DIII-D
gyrokinetic simulations
plasma

Title: Effects of RMP-induced changes of radial electric fields on microturbulence in DIII-D pedestal top

Citation Formats

References (24)

Cited By (3)

Similar Records

Related Subjects