Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D

Kriete, David M.; McKee, George R.; Schmitz, Lothar; Smith, D. R.; Yan, Z.; Morton, L. A.; Fonck, R. J.

doi:10.1063/1.5145207

Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D

Journal Article · Wed Jun 03 00:00:00 EDT 2020 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5145207· OSTI ID:1631960

^[1]; ^[2]; ^[3]; ^[2]; Yan, Z. ^[2]; ^[2]; ^[2]

Univ. of Wisconsin, Madison, WI (United States); General Atomics
Univ. of Wisconsin, Madison, WI (United States)
Univ. of California, Los Angeles, CA (United States)

Detailed 2D turbulence measurements from the DIII-D tokamak provide an explanation for how resonant magnetic perturbations (RMPs) raise the L-H power threshold $P_{LH}$ [P. Gohil et al., Nucl. Fusion 51, 103020 (2011)] in ITER-relevant, low rotation, ITER-similar-shape plasmas with favorable ion $\nabla B$ direction. RMPs simultaneously raise the turbulence decorrelation rate $Δ ω_{D}$ and reduce the flow shear rate $ω_{shear}$ in the stationary L-mode state preceding the L-H transition, thereby disrupting the turbulence shear suppression mechanism. RMPs also reduce the Reynolds stress drive for poloidal flow, contributing to the reduction of $ω_{shear}$ . On the ~100 μs timescale of the L-H transition, RMPs reduce Reynolds-stress-driven energy transfer from turbulence to flows by an order of magnitude, challenging the energy depletion theory for the L-H trigger mechanism. In contrast, non-resonant magnetic perturbations, which do not significantly affect $P_{LH}$ , do not affect $Δ ω_{D}$ and only slightly reduce $ω_{shear}$ and Reynolds-stress-driven energy transfer.<

View Accepted Manuscript (DOE)

Research Organization:: General Atomics, San Diego, CA (United States); Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)

Grant/Contract Number:: FC02-04ER54698; FG02-08ER54999; SC0001288

OSTI ID:: 1631960

Alternate ID(s):: OSTI ID: 1631774

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 27; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (78)

Particle image velocimetry with optical flow Quénot, G. M.; Pakleza, J.; Kowalewski, T. A. Experiments in Fluids, Vol. 25, Issue 3 https://doi.org/10.1007/s003480050222	journal	August 1998
BOUT++: A framework for parallel plasma fluid simulations Dudson, B. D.; Umansky, M. V.; Xu, X. Q. Computer Physics Communications, Vol. 180, Issue 9 https://doi.org/10.1016/j.cpc.2009.03.008	journal	September 2009
Plasma fluctuation measurements in tokamaks using beam‐plasma interactions Fonck, R. J.; Duperrex, P. A.; Paul, S. F. Review of Scientific Instruments, Vol. 61, Issue 11 https://doi.org/10.1063/1.1141556	journal	November 1990
Density fluctuation measurements via beam emission spectroscopy (invited) Durst, R. D.; Fonck, R. J.; Cosby, G. Review of Scientific Instruments, Vol. 63, Issue 10 https://doi.org/10.1063/1.1143546	journal	October 1992
The beam emission spectroscopy diagnostic on the DIII-D tokamak McKee, G.; Ashley, R.; Durst, R. Review of Scientific Instruments, Vol. 70, Issue 1 https://doi.org/10.1063/1.1149416	journal	January 1999
Role of trapped electron mode turbulence in internal transport barrier control in the Alcator C-Mod Tokamak Ernst, D. R.; Bonoli, P. T.; Catto, P. J. Physics of Plasmas, Vol. 11, Issue 5 https://doi.org/10.1063/1.1705653	journal	May 2004
Turbulence velocimetry of density fluctuation imaging data McKee, G. R.; Fonck, R. J.; Gupta, D. K. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1790043	journal	October 2004
Effect of ion ∇B drift direction on density fluctuation poloidal flow and flow shear Fenzi, C.; McKee, G. R.; Fonck, R. J. Physics of Plasmas, Vol. 12, Issue 6 https://doi.org/10.1063/1.1915349	journal	June 2005
Spatial transfer function for the beam emission spectroscopy diagnostic on DIII-D Shafer, M. W.; Fonck, R. J.; McKee, G. R. Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2221908	journal	October 2006
A theory-based transport model with comprehensive physics Staebler, G. M.; Kinsey, J. E.; Waltz, R. E. Physics of Plasmas, Vol. 14, Issue 5 https://doi.org/10.1063/1.2436852	journal	May 2007
Detection of zonal flow spectra in DIII-D by a dual-channel Doppler backscattering system Schmitz, L.; Wang, G.; Hillesheim, J. C. Review of Scientific Instruments, Vol. 79, Issue 10 https://doi.org/10.1063/1.2953675	journal	October 2008
A novel, multichannel, comb-frequency Doppler backscatter system Peebles, W. A.; Rhodes, T. L.; Hillesheim, J. C. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3464266	journal	October 2010
New plasma measurements with a multichannel millimeter-wave fluctuation diagnostic system in the DIII-D tokamak (invited) Hillesheim, J. C.; Peebles, W. A.; Rhodes, T. L. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3466900	journal	October 2010
Wide-field turbulence imaging with beam emission spectroscopy McKee, G. R.; Fonck, R. J.; Shafer, M. W. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3495788	journal	October 2010
Gyrokinetic simulation of momentum transport with residual stress from diamagnetic level velocity shears Waltz, R. E.; Staebler, G. M.; Solomon, W. M. Physics of Plasmas, Vol. 18, Issue 4 https://doi.org/10.1063/1.3579481	journal	April 2011
Calculations of two-fluid linear response to non-axisymmetric fields in tokamaks Ferraro, N. M. Physics of Plasmas, Vol. 19, Issue 5 https://doi.org/10.1063/1.3694657	journal	May 2012
Zonal flow triggers the L-H transition in the Experimental Advanced Superconducting Tokamak Manz, P.; Xu, G. S.; Wan, B. N. Physics of Plasmas, Vol. 19, Issue 7 https://doi.org/10.1063/1.4737612	journal	July 2012
Properties of high-β microturbulence and the non-zonal transition Pueschel, M. J.; Hatch, D. R.; Görler, T. Physics of Plasmas, Vol. 20, Issue 10 https://doi.org/10.1063/1.4823717	journal	October 2013
The effect of magnetic flutter on residual flow Terry, P. W.; Pueschel, M. J.; Carmody, D. Physics of Plasmas, Vol. 20, Issue 11 https://doi.org/10.1063/1.4828396	journal	November 2013
Edge-localized-modes in tokamaks Leonard, A. W. Physics of Plasmas, Vol. 21, Issue 9 https://doi.org/10.1063/1.4894742	journal	September 2014
Evolution of E × B shear and coherent fluctuations prior to H-L transitions in DIII-D and control strategies for H-L transitions Eldon, D.; Boivin, R. L.; Chrystal, C. Physics of Plasmas, Vol. 22, Issue 11 https://doi.org/10.1063/1.4935919	journal	November 2015
Parallel electron force balance and the L-H transition Stoltzfus-Dueck, T. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4951015	journal	May 2016
Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry Kriete, D. M.; McKee, G. R.; Fonck, R. J. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5036535	journal	October 2018
Enhancement of zonal flow damping due to resonant magnetic perturbations in the background of an equilibrium E × B sheared flow Leconte, M.; Singh, R. Physics of Plasmas, Vol. 25, Issue 8 https://doi.org/10.1063/1.5043243	journal	August 2018
Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas Neiser, T. F.; Jenko, F.; Carter, T. A. Physics of Plasmas, Vol. 26, Issue 9 https://doi.org/10.1063/1.5052047	journal	September 2019
Influence of sheared poloidal rotation on edge turbulence Biglari, H.; Diamond, P. H.; Terry, P. W. Physics of Fluids B: Plasma Physics, Vol. 2, Issue 1 https://doi.org/10.1063/1.859529	journal	January 1990
Theory of mean poloidal flow generation by turbulence Diamond, P. H.; Kim, Y. ‐B. Physics of Fluids B: Plasma Physics, Vol. 3, Issue 7 https://doi.org/10.1063/1.859681	journal	July 1991
Three‐dimensional fluid simulations of the nonlinear drift‐resistive ballooning modes in tokamak edge plasmas Guzdar, P. N.; Drake, J. F.; McCarthy, D. Physics of Fluids B: Plasma Physics, Vol. 5, Issue 10 https://doi.org/10.1063/1.860842	journal	October 1993
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
Electron temperature gradient driven turbulence Jenko, F.; Dorland, W.; Kotschenreuther, M. Physics of Plasmas, Vol. 7, Issue 5 https://doi.org/10.1063/1.874014	journal	May 2000
OMFIT Tokamak Profile Data Fitting and Physics Analysis Logan, N. C.; Grierson, B. A.; Haskey, S. R. Fusion Science and Technology, Vol. 74, Issue 1-2 https://doi.org/10.1080/15361055.2017.1386943	journal	January 2018
Effects of applied error fields on the H-mode power threshold of JFT-2M Leonard, A. W.; Howald, A. M.; Hyatt, A. W. Nuclear Fusion, Vol. 31, Issue 8 https://doi.org/10.1088/0029-5515/31/8/008	journal	August 1991
Suppression of large edge localized modes with edge resonant magnetic fields in high confinement DIII-D plasmas Evans, T. E.; Moyer, R. A.; Watkins, J. G. Nuclear Fusion, Vol. 45, Issue 7 https://doi.org/10.1088/0029-5515/45/7/007	journal	June 2005
RMP ELM suppression in DIII-D plasmas with ITER similar shapes and collisionalities Evans, T. E.; Fenstermacher, M. E.; Moyer, R. A. Nuclear Fusion, Vol. 48, Issue 2 https://doi.org/10.1088/0029-5515/48/2/024002	journal	January 2008
Study of in-vessel nonaxisymmetric ELM suppression coil concepts for ITER Schaffer, M. J.; Menard, J. E.; Aldan, M. P. Nuclear Fusion, Vol. 48, Issue 2 https://doi.org/10.1088/0029-5515/48/2/024004	journal	January 2008
L–H transition studies on DIII-D to determine H-mode access for operational scenarios in ITER Gohil, P.; Evans, T. E.; Fenstermacher, M. E. Nuclear Fusion, Vol. 51, Issue 10 https://doi.org/10.1088/0029-5515/51/10/103020	journal	August 2011
L–H threshold studies in NSTX Kaye, S. M.; Maingi, R.; Battaglia, D. Nuclear Fusion, Vol. 51, Issue 11 https://doi.org/10.1088/0029-5515/51/11/113019	journal	October 2011
Long-range correlations and edge transport bifurcation in fusion plasmas Xu, Y.; Carralero, D.; Hidalgo, C. Nuclear Fusion, Vol. 51, Issue 6 https://doi.org/10.1088/0029-5515/51/6/063020	journal	May 2011
L–H transition in the presence of magnetic perturbations in ASDEX Upgrade Ryter, F.; Rathgeber, S. K.; Viezzer, E. Nuclear Fusion, Vol. 52, Issue 11 https://doi.org/10.1088/0029-5515/52/11/114014	journal	October 2012
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
3D vacuum magnetic field modelling of the ITER ELM control coil during standard operating scenarios Evans, T. E.; Orlov, D. M.; Wingen, A. Nuclear Fusion, Vol. 53, Issue 9 https://doi.org/10.1088/0029-5515/53/9/093029	journal	August 2013
Impact of resonant magnetic perturbations on zonal modes, drift-wave turbulence and the L–H transition threshold Leconte, M.; Diamond, P. H.; Xu, Y. Nuclear Fusion, Vol. 54, Issue 1 https://doi.org/10.1088/0029-5515/54/1/013004	journal	November 2013
Fast ion transport during applied 3D magnetic perturbations on DIII-D Van Zeeland, M. A.; Ferraro, N. M.; Grierson, B. A. Nuclear Fusion, Vol. 55, Issue 7 https://doi.org/10.1088/0029-5515/55/7/073028	journal	June 2015
Nonlinear transfer in heated L-modes approaching the L–H transition threshold in Alcator C-Mod Cziegler, I.; Tynan, G. R.; Diamond, P. H. Nuclear Fusion, Vol. 55, Issue 8 https://doi.org/10.1088/0029-5515/55/8/083007	journal	June 2015
Integrated modeling applications for tokamak experiments with OMFIT Meneghini, O.; Smith, S. P.; Lao, L. L. Nuclear Fusion, Vol. 55, Issue 8 https://doi.org/10.1088/0029-5515/55/8/083008	journal	July 2015
Interplay between turbulence, neoclassical and zonal flows during the transition from low to high confinement mode at ASDEX Upgrade Cavedon, M.; Pütterich, T.; Viezzer, E. Nuclear Fusion, Vol. 57, Issue 1 https://doi.org/10.1088/0029-5515/57/1/014002	journal	October 2016
A review of theories of the L-H transition Connor, J. W.; Wilson, H. R. Plasma Physics and Controlled Fusion, Vol. 42, Issue 1 https://doi.org/10.1088/0741-3335/42/1/201	journal	December 1999
Plasma rotation profile measurements using Doppler reflectometry Conway, G. D.; Schirmer, J.; Klenge, S. Plasma Physics and Controlled Fusion, Vol. 46, Issue 6 https://doi.org/10.1088/0741-3335/46/6/003	journal	April 2004
Zonal flows in plasma—a review Diamond, P. H.; Itoh, S-I; Itoh, K. Plasma Physics and Controlled Fusion, Vol. 47, Issue 5 https://doi.org/10.1088/0741-3335/47/5/R01	journal	April 2005
Structure and scaling properties of the geodesic acoustic mode McKee, G. R.; Gupta, D. K.; Fonck, R. J. Plasma Physics and Controlled Fusion, Vol. 48, Issue 4 https://doi.org/10.1088/0741-3335/48/4/S09	journal	March 2006
A quarter-century of H-mode studies Wagner, F. Plasma Physics and Controlled Fusion, Vol. 49, Issue 12B https://doi.org/10.1088/0741-3335/49/12B/S01	journal	November 2007
Magnetic perturbation experiments on MAST L- and H-mode plasmas using internal coils Kirk, A.; Liu, Yueqiang; Nardon, E. Plasma Physics and Controlled Fusion, Vol. 53, Issue 6 https://doi.org/10.1088/0741-3335/53/6/065011	journal	April 2011
Interaction between a low-frequency electrostatic mode and resonant magnetic perturbations in MAST Robinson, J. R.; Hnat, B.; Dura, P. Plasma Physics and Controlled Fusion, Vol. 54, Issue 10 https://doi.org/10.1088/0741-3335/54/10/105007	journal	August 2012
Effects of resonant magnetic perturbations on turbulence and transport in DIII-D L-mode plasmas Mordijck, S.; Rhodes, T. L.; Zeng, L. Plasma Physics and Controlled Fusion, Vol. 58, Issue 1 https://doi.org/10.1088/0741-3335/58/1/014003	journal	October 2015
Recent progress towards a physics-based understanding of the H-mode transition Tynan, G. R.; Cziegler, I.; Diamond, P. H. Plasma Physics and Controlled Fusion, Vol. 58, Issue 4 https://doi.org/10.1088/0741-3335/58/4/044003	journal	January 2016
Experimental studies of high-confinement mode plasma response to non-axisymmetric magnetic perturbations in ASDEX Upgrade Suttrop, W.; Kirk, A.; Nazikian, R. Plasma Physics and Controlled Fusion, Vol. 59, Issue 1 https://doi.org/10.1088/0741-3335/59/1/014049	journal	November 2016
Energy exchange dynamics across L–H transitions in NSTX Diallo, A.; Banerjee, S.; Zweben, S. J. Nuclear Fusion, Vol. 57, Issue 6 https://doi.org/10.1088/1741-4326/aa6a24	journal	May 2017
Enhanced understanding of non-axisymmetric intrinsic and controlled field impacts in tokamaks In, Y.; Park, J. -K.; Jeon, Y. M. Nuclear Fusion, Vol. 57, Issue 11 https://doi.org/10.1088/1741-4326/aa791c	journal	August 2017
Turbulence and sheared flow structures behind the isotopic dependence of the L-H power threshold on DIII-D Yan, Z.; Gohil, P.; McKee, G. R. Nuclear Fusion, Vol. 57, Issue 12 https://doi.org/10.1088/1741-4326/aa82c9	journal	September 2017
3D field induced collisionless zonal flow decay in tokamak plasmas Choi, G. J.; Hahm, T. S. Nuclear Fusion, Vol. 58, Issue 2 https://doi.org/10.1088/1741-4326/aa9ac1	journal	December 2017
Simulation of density fluctuations before the L-H transition for Hydrogen and Deuterium plasmas in the DIII-D tokamak using the BOUT++ code Wang, Y. M.; Xu, X. Q.; Yan, Z. Nuclear Fusion, Vol. 58, Issue 2 https://doi.org/10.1088/1741-4326/aa9f7d	journal	January 2018
Overview of KSTAR research progress and future plans toward ITER and K-DEMO Park, H. K.; Choi, M. J.; Hong, S. H. Nuclear Fusion, Vol. 59, Issue 11 https://doi.org/10.1088/1741-4326/ab20e2	journal	July 2019
L – H transition trigger physics in ITER-similar plasmas with applied n = 3 magnetic perturbations Schmitz, L.; Kriete, D. M.; Wilcox, R. S. Nuclear Fusion, Vol. 59, Issue 12 https://doi.org/10.1088/1741-4326/ab36bf	journal	September 2019
A non-axisymmetric E × B shear inducing toroidally localized turbulence with an applied magnetic perturbation field in EAST Hu, G. H.; Chen, R.; Xu, G. S. Nuclear Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1741-4326/ab4ebf	journal	November 2019
Power requirement for accessing the H-mode in ITER Martin, Y. R.; Takizuka, T.; Group, the ITPA CDBM H-mode Threshold Data Journal of Physics: Conference Series, Vol. 123 https://doi.org/10.1088/1742-6596/123/1/012033	journal	July 2008
Role of Zonal Flow Predator-Prey Oscillations in Triggering the Transition to H-Mode Confinement Schmitz, L.; Zeng, L.; Rhodes, T. L. Physical Review Letters, Vol. 108, Issue 15 https://doi.org/10.1103/PhysRevLett.108.155002	journal	April 2012
Frequency-Resolved Nonlinear Turbulent Energy Transfer into Zonal Flows in Strongly Heated L -Mode Plasmas in the HL-2A Tokamak Xu, M.; Tynan, G. R.; Diamond, P. H. Physical Review Letters, Vol. 108, Issue 24 https://doi.org/10.1103/PhysRevLett.108.245001	journal	June 2012
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
Observation of the L − H Confinement Bifurcation Triggered by a Turbulence-Driven Shear Flow in a Tokamak Plasma Yan, Z.; McKee, G. R.; Fonck, R. Physical Review Letters, Vol. 112, Issue 12 https://doi.org/10.1103/PhysRevLett.112.125002	journal	March 2014
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
Evidence of Toroidally Localized Turbulence with Applied 3D Fields in the DIII-D Tokamak Wilcox, R. S.; Shafer, M. W.; Ferraro, N. M. Physical Review Letters, Vol. 117, Issue 13 https://doi.org/10.1103/PhysRevLett.117.135001	journal	September 2016
Fast Low-to-High Confinement Mode Bifurcation Dynamics in a Tokamak Edge Plasma Gyrokinetic Simulation Chang, C. S.; Ku, S.; Tynan, G. R. Physical Review Letters, Vol. 118, Issue 17 https://doi.org/10.1103/PhysRevLett.118.175001	journal	April 2017
Regime of Improved Confinement and High Beta in Neutral-Beam-Heated Divertor Discharges of the ASDEX Tokamak Wagner, F.; Becker, G.; Behringer, K. Physical Review Letters, Vol. 49, Issue 19 https://doi.org/10.1103/PhysRevLett.49.1408	journal	November 1982
Self-Regulating Shear Flow Turbulence: A Paradigm for the L to H Transition Diamond, P. H.; Liang, Y. -M.; Carreras, B. A. Physical Review Letters, Vol. 72, Issue 16 https://doi.org/10.1103/PhysRevLett.72.2565	journal	April 1994
Zonal Flows and Transient Dynamics of the L − H Transition Kim, Eun-jin; Diamond, P. H. Physical Review Letters, Vol. 90, Issue 18 https://doi.org/10.1103/PhysRevLett.90.185006	journal	May 2003
Suppression of Large Edge-Localized Modes in High-Confinement DIII-D Plasmas with a Stochastic Magnetic Boundary Evans, T. E.; Moyer, R. A.; Thomas, P. R. Physical Review Letters, Vol. 92, Issue 23 https://doi.org/10.1103/PhysRevLett.92.235003	journal	June 2004
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
Potential Vorticity Mixing in a Tangled Magnetic Field Chen, Chang-Chun; Diamond, Patrick H. The Astrophysical Journal, Vol. 892, Issue 1 https://doi.org/10.3847/1538-4357/ab774f	journal	March 2020

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