Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Sheng, H.; Sun, Y. W.; Li, X. Y.; Li, H. H.; Wu, X. M.; Li, Y. Y.; Mao, S. F.; Ma, Q.; Liu, Y. Q.; Ye, C.; Yan, X. T.; Xie, P. C.; Zang, Q.; Wang, H. H.; Jia, M. N.; Ye, M. Y.

doi:10.1088/1741-4326/acd206

Title: Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Journal Article · 18 May 2023 · Nuclear Fusion

DOI: https://doi.org/10.1088/1741-4326/acd206 · OSTI ID:1974281

;

; Li, X. Y.; Li, H. H.; Wu, X. M.;

;

; Zang, Q.;

;

Abstract The spectrum effects on toroidal rotation braking, induced by n = 1 resonant magnetic perturbations (RMPs) in the discharges with $q_{95} = 4.1$ and $q_{95} = 5.1$ , are studied in the EAST tokamak. Here n is the toroidal mode number, RMP spectrum is varied by scanning $δ ϕ_{U L}$ , the phase difference between the upper and lower rows of RMP coils. The toroidal rotation changes periodically with the periodic $δ ϕ_{U L}$ scanning and such an effect is stronger in the discharge with lower $q_{95} = 4.1$ . The spectrum dependence of the neoclassical toroidal viscosity (NTV) torque, modeled by NTVTOK based on the magnetic perturbation obtained from MARS-F calculation, agrees well with that of the experimentally observed braking torques in both discharges. The modeled NTV torque is stronger in the discharge with lower q ₉₅ , which also agrees with the observations. The comparisons between the spectrum dependence of the NTV and magnetic perturbations show that the resonant mode of magnetic perturbations near the plasma edge mainly contribute the NTV torque. These agreements between modeling and experiments highlight the capability of NTV theory in explaining the experimental observation in the EAST tokamak.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0020298

OSTI ID:: 1974281

Alternate ID(s):: OSTI ID: 2421533; OSTI ID: 1972394

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 7 Vol. 63; ISSN 0029-5515

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: IAEA

Language:: English

References (40)

δf Monte Carlo calculation of neoclassical transport in perturbed tokamaks Kim, Kimin; Park, Jong-Kyu; Kramer, Gerrit J. Physics of Plasmas, Vol. 19, Issue 8 https://doi.org/10.1063/1.4740511	journal	August 2012
Neoclassical Toroidal Viscosity Calculations in Tokamaks Using a δ f Monte Carlo Simulation and Their Verifications Satake, S.; Park, J. -K.; Sugama, H. Physical Review Letters, Vol. 107, Issue 5 https://doi.org/10.1103/PhysRevLett.107.055001	journal	July 2011
Observation of Plasma Rotation Driven by Static Nonaxisymmetric Magnetic Fields in a Tokamak Garofalo, A. M.; Burrell, K. H.; DeBoo, J. C. Physical Review Letters, Vol. 101, Issue 19 https://doi.org/10.1103/PhysRevLett.101.195005	journal	November 2008
Dependence of neoclassical toroidal viscosity on the poloidal spectrum of applied nonaxisymmetric fields Logan, N. C.; Park, J. -K.; Paz-Soldan, C. Nuclear Fusion, Vol. 56, Issue 3 https://doi.org/10.1088/0029-5515/56/3/036008	journal	February 2016
Full toroidal plasma response to externally applied nonaxisymmetric magnetic fields Liu, Yueqiang; Kirk, A.; Nardon, E. Physics of Plasmas, Vol. 17, Issue 12 https://doi.org/10.1063/1.3526677	journal	December 2010
Magnetohydrodynamic-activity-induced toroidal momentum dissipation in collisionless regimes in tokamaks Shaing, K. C. Physics of Plasmas, Vol. 10, Issue 5 https://doi.org/10.1063/1.1567285	journal	May 2003
Entropy production rate in tokamaks with nonaxisymmetric magnetic fields Garbet, X.; Abiteboul, J.; Trier, E. Physics of Plasmas, Vol. 17, Issue 7 https://doi.org/10.1063/1.3454365	journal	July 2010
Observation of Peak Neoclassical Toroidal Viscous Force in the DIII-D Tokamak Cole, A. J.; Callen, J. D.; Solomon, W. M. Physical Review Letters, Vol. 106, Issue 22 https://doi.org/10.1103/PhysRevLett.106.225002	journal	June 2011
An approximate analytic expression for neoclassical toroidal plasma viscosity in tokamaks Shaing, K. C.; Sabbagh, S. A.; Chu, M. S. Nuclear Fusion, Vol. 50, Issue 2 https://doi.org/10.1088/0029-5515/50/2/025022	journal	January 2010
Variation of magnetic braking by non-axisymmetric magnetic fields depending on the perturbed field structure in the KSTAR tokamak Kim, Kimin; Jeon, Y. M.; Park, J. -K. Nuclear Fusion, Vol. 57, Issue 3 https://doi.org/10.1088/1741-4326/57/3/036014	journal	December 2016
Numerical Verification of Bounce-Harmonic Resonances in Neoclassical Toroidal Viscosity for Tokamaks Kim, Kimin; Park, Jong-Kyu; Boozer, Allen H. Physical Review Letters, Vol. 110, Issue 18 https://doi.org/10.1103/PhysRevLett.110.185004	journal	May 2013
Effects of the applied magnetic fields with various toroidal phase differences on the neoclassical toroidal viscosity in JT-60SA Honda, M.; Satake, S.; Suzuki, Y. Nuclear Fusion, Vol. 58, Issue 11 https://doi.org/10.1088/1741-4326/aabaaa	journal	October 2018
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
Bifurcation theory of poloidal rotation in tokamaks: A model for L-H transition Shaing, K.; Crume, E. Physical Review Letters, Vol. 63, Issue 21 https://doi.org/10.1103/PhysRevLett.63.2369	journal	November 1989
Collisional boundary layer analysis for neoclassical toroidal plasma viscosity in tokamaks Shaing, K. C.; Cahyna, P.; Becoulet, M. Physics of Plasmas, Vol. 15, Issue 8 https://doi.org/10.1063/1.2969434	journal	August 2008
Development of the charge exchange recombination spectroscopy and the beam emission spectroscopy on the EAST tokamak Li, Y. Y.; Fu, J.; Lyu, B. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4890408	journal	November 2014
Bifurcation of poloidal rotation and suppression of turbulent fluctuations: A model for the L–H transition in tokamaks Shaing, K. C.; Crume, E. C.; Houlberg, W. A. Physics of Fluids B: Plasma Physics, Vol. 2, Issue 6 https://doi.org/10.1063/1.859473	journal	June 1990
Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas Evans, Todd E.; Moyer, Richard A.; Burrell, Keith H. Nature Physics, Vol. 2, Issue 6 https://doi.org/10.1038/nphys312	journal	May 2006
Experimental Study of the Ion Critical-Gradient Length and Stiffness Level and the Impact of Rotation in the JET Tokamak Mantica, P.; Strintzi, D.; Tala, T. Physical Review Letters, Vol. 102, Issue 17 https://doi.org/10.1103/PhysRevLett.102.175002	journal	April 2009
Stabilization of the external kink and the resistive wall mode Chu, M. S.; Okabayashi, M. Plasma Physics and Controlled Fusion, Vol. 52, Issue 12 https://doi.org/10.1088/0741-3335/52/12/123001	journal	October 2010
Local measurements of correlated momentum and heat transport in the TFTR tokamak Scott, S. D.; Diamond, P. H.; Fonck, R. J. Physical Review Letters, Vol. 64, Issue 5 https://doi.org/10.1103/PhysRevLett.64.531	journal	January 1990
Non-resonant magnetic braking on JET and TEXTOR Sun, Y.; Liang, Y.; Shaing, K. C. Nuclear Fusion, Vol. 52, Issue 8 https://doi.org/10.1088/0029-5515/52/8/083007	journal	July 2012
Braking due to non-resonant magnetic perturbations and comparison with neoclassical toroidal viscosity torque in EXTRAP T2R Frassinetti, L.; Sun, Y.; Fridström, R. Nuclear Fusion, Vol. 55, Issue 11 https://doi.org/10.1088/0029-5515/55/11/112003	journal	September 2015
Modeling of non-axisymmetric magnetic perturbations in tokamaks Sun, Y.; Liang, Y.; Qian, J. Plasma Physics and Controlled Fusion, Vol. 57, Issue 4 https://doi.org/10.1088/0741-3335/57/4/045003	journal	March 2015
First demonstration of full ELM suppression in low input torque plasmas to support ITER research plan using n = 4 RMP in EAST Sun, Y.; Ma, Q.; Jia, M. Nuclear Fusion, Vol. 61, Issue 10 https://doi.org/10.1088/1741-4326/ac1a1d	journal	October 2021
Rotational Resonance of Nonaxisymmetric Magnetic Braking in the KSTAR Tokamak Park, J. -K.; Jeon, Y. M.; Menard, J. E. Physical Review Letters, Vol. 111, Issue 9 https://doi.org/10.1103/PhysRevLett.111.095002	journal	August 2013
A Key to Improved Ion Core Confinement in the JET Tokamak: Ion Stiffness Mitigation due to Combined Plasma Rotation and Low Magnetic Shear Mantica, P.; Angioni, C.; Challis, C. Physical Review Letters, Vol. 107, Issue 13 https://doi.org/10.1103/PhysRevLett.107.135004	journal	September 2011
Neoclassical Toroidal Plasma Viscosity Torque in Collisionless Regimes in Tokamaks Sun, Y.; Liang, Y.; Shaing, K. C. Physical Review Letters, Vol. 105, Issue 14 https://doi.org/10.1103/PhysRevLett.105.145002	journal	October 2010
3D magnetic fields and plasma rotation in RFX-mod tokamak plasmas Piron, L.; Bonfiglio, D.; Piovesan, P. Nuclear Fusion, Vol. 53, Issue 11 https://doi.org/10.1088/0029-5515/53/11/113022	journal	September 2013
Unified modeling of both resonant and non-resonant neoclassical transport under non-axisymmetric magnetic perturbations in tokamaks Sun, Y.; Li, X.; He, K. Physics of Plasmas, Vol. 26, Issue 7 https://doi.org/10.1063/1.5099376	journal	July 2019
Symmetry-Breaking Induced Transport in the Vicinity of a Magnetic Island Shaing, K. C. Physical Review Letters, Vol. 87, Issue 24 https://doi.org/10.1103/PhysRevLett.87.245003	journal	November 2001
Toroidal modelling of core plasma flow damping by RMP fields in hybrid discharge on ASDEX upgrade Zhang, N.; Liu, Y. Q.; Piovesan, P. Nuclear Fusion, Vol. 60, Issue 9 https://doi.org/10.1088/1741-4326/ab9dce	journal	August 2020
Nonlinear Transition from Mitigation to Suppression of the Edge Localized Mode with Resonant Magnetic Perturbations in the EAST Tokamak Sun, Y.; Liang, Y.; Liu, Y. Q. Physical Review Letters, Vol. 117, Issue 11 https://doi.org/10.1103/PhysRevLett.117.115001	journal	September 2016
The tokamak Monte Carlo fast ion module NUBEAM in the National Transport Code Collaboration library Pankin, Alexei; McCune, Douglas; Andre, Robert Computer Physics Communications, Vol. 159, Issue 3 https://doi.org/10.1016/j.cpc.2003.11.002	journal	June 2004
Modelling of the neoclassical toroidal plasma viscosity torque in tokamaks Sun, Y.; Liang, Y.; Shaing, K. C. Nuclear Fusion, Vol. 51, Issue 5 https://doi.org/10.1088/0029-5515/51/5/053015	journal	April 2011
Neoclassical flows and transport in nonaxisymmetric toroidal plasmas Shaing, K. C. Physics of Fluids, Vol. 26, Issue 11 https://doi.org/10.1063/1.864108	journal	January 1983
Rotation braking with n = 1 nonaxisymmetric magnetic perturbation in the EAST tokamak Li, X. Y.; Sun, Y. W.; Wang, H. H. Physics of Plasmas, Vol. 26, Issue 5 https://doi.org/10.1063/1.5098526	journal	May 2019
Calculation of neoclassical toroidal viscosity in tokamaks with broken toroidal symmetry Satake, Shinsuke; Sugama, Hideo; Kanno, Ryutaro Plasma Physics and Controlled Fusion, Vol. 53, Issue 5 https://doi.org/10.1088/0741-3335/53/5/054018	journal	April 2011
Toroidal rotation braking with n = 1 magnetic perturbation field on JET Sun, Y.; Liang, Y.; Koslowski, H. R. Plasma Physics and Controlled Fusion, Vol. 52, Issue 10 https://doi.org/10.1088/0741-3335/52/10/105007	journal	September 2010
Observation of resonant and non-resonant magnetic braking in the n = 1 non-axisymmetric configurations on KSTAR Kim, Kimin; Choe, W.; In, Y. Nuclear Fusion, Vol. 57, Issue 12 https://doi.org/10.1088/1741-4326/aa8382	journal	September 2017

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