Mitigation of Alfvenic activity by 3D magnetic perturbations on NSTX
Abstract
Observations on the National Spherical Torus eXperiment (NSTX) indicate that externally applied non-axisymmetric magnetic perturbations (MP) can reduce the amplitude of Toroidal Alfven Eigenmodes (TAE) and Global Alfven Eigenmodes (GAE) in response to pulsed n=3 non-resonant fields. From full-orbit following Monte Carlo simulations with the 1- and 2-fluid resistive MHD plasma response to the magnetic perturbation included, it was found that in response to MP pulses the fast-ion losses increased and the fast-ion drive for the GAEs was reduced. The MP did not affect the fast-ion drive for the TAEs significantly but the Alfven continuum at the plasma edge was found to be altered due to the toroidal symmetry breaking which leads to coupling of different toroidal harmonics. The TAE gap was reduced at the edge creating enhanced continuum damping of the global TAEs, which is consistent with the observations. Furthermore, the results suggest that optimized non-axisymmetric MP might be exploited to control and mitigate Alfven instabilities by tailoring the fast-ion distribution function and/or continuum structure.
- Authors:
-
[1];
[1];
[3];
[1];
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- General Atomics, San Diego, CA (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of California, Los Angeles, CA (United States)
- Univ. of California, Irvine, Irvine, CA (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Contributing Org.:
- Princeton Plasma Physics Laboratory; General Atomics; Oak Ridge National Laboratory; University of California, Los Angeles; University of California, Irvine.
- OSTI Identifier:
- 1253781
- Alternate Identifier(s):
- OSTI ID: 1260290
- Report Number(s):
- PPPL-5237
Journal ID: ISSN 0741-3335; TRN: US1601722
- Grant/Contract Number:
- AC02-09CH11466; SCG903402; FG02-99ER54527; FC02-04ER54698; SC-G903402; FC02-04-ER54698
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 58; Journal Issue: 8; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; tokamaks; NSTX; wave interaction; particles; 3D magnetic fields
Citation Formats
Kramer, G. J., Bortolon, A., Ferraro, N. M., Spong, D. A., Crocker, N. A., Darrow, D. S., Fredrickson, E. D., Kubota, S., Park, J. -K., Podesta, M., and Heidbrink, W. W. Mitigation of Alfvenic activity by 3D magnetic perturbations on NSTX. United States: N. p., 2016.
Web. doi:10.1088/0741-3335/58/8/085003.
Kramer, G. J., Bortolon, A., Ferraro, N. M., Spong, D. A., Crocker, N. A., Darrow, D. S., Fredrickson, E. D., Kubota, S., Park, J. -K., Podesta, M., & Heidbrink, W. W. Mitigation of Alfvenic activity by 3D magnetic perturbations on NSTX. United States. https://doi.org/10.1088/0741-3335/58/8/085003
Kramer, G. J., Bortolon, A., Ferraro, N. M., Spong, D. A., Crocker, N. A., Darrow, D. S., Fredrickson, E. D., Kubota, S., Park, J. -K., Podesta, M., and Heidbrink, W. W. Tue .
"Mitigation of Alfvenic activity by 3D magnetic perturbations on NSTX". United States. https://doi.org/10.1088/0741-3335/58/8/085003. https://www.osti.gov/servlets/purl/1253781.
@article{osti_1253781,
title = {Mitigation of Alfvenic activity by 3D magnetic perturbations on NSTX},
author = {Kramer, G. J. and Bortolon, A. and Ferraro, N. M. and Spong, D. A. and Crocker, N. A. and Darrow, D. S. and Fredrickson, E. D. and Kubota, S. and Park, J. -K. and Podesta, M. and Heidbrink, W. W.},
abstractNote = {Observations on the National Spherical Torus eXperiment (NSTX) indicate that externally applied non-axisymmetric magnetic perturbations (MP) can reduce the amplitude of Toroidal Alfven Eigenmodes (TAE) and Global Alfven Eigenmodes (GAE) in response to pulsed n=3 non-resonant fields. From full-orbit following Monte Carlo simulations with the 1- and 2-fluid resistive MHD plasma response to the magnetic perturbation included, it was found that in response to MP pulses the fast-ion losses increased and the fast-ion drive for the GAEs was reduced. The MP did not affect the fast-ion drive for the TAEs significantly but the Alfven continuum at the plasma edge was found to be altered due to the toroidal symmetry breaking which leads to coupling of different toroidal harmonics. The TAE gap was reduced at the edge creating enhanced continuum damping of the global TAEs, which is consistent with the observations. Furthermore, the results suggest that optimized non-axisymmetric MP might be exploited to control and mitigate Alfven instabilities by tailoring the fast-ion distribution function and/or continuum structure.},
doi = {10.1088/0741-3335/58/8/085003},
journal = {Plasma Physics and Controlled Fusion},
number = 8,
volume = 58,
place = {United States},
year = {Tue Jul 05 00:00:00 EDT 2016},
month = {Tue Jul 05 00:00:00 EDT 2016}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 19 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Loss of energetic beam ions during TAE instabilities
journal, May 1993
- Duong, H. H.; Heidbrink, W. W.; Strait, E. J.
- Nuclear Fusion, Vol. 33, Issue 5
Toroidal Alfvén eigenmode‐induced ripple trapping
journal, August 1995
- White, R. B.; Fredrickson, E.; Darrow, D.
- Physics of Plasmas, Vol. 2, Issue 8
Major minority: energetic particles in fusion plasmas
journal, March 2011
- Breizman, B. N.; Sharapov, S. E.
- Plasma Physics and Controlled Fusion, Vol. 53, Issue 5
Basic physics of Alfvén instabilities driven by energetic particles in toroidally confined plasmas
journal, May 2008
- Heidbrink, W. W.
- Physics of Plasmas, Vol. 15, Issue 5
Experimental studies on fast-ion transport by Alfvén wave avalanches on the National Spherical Torus Experiment
journal, May 2009
- Podestà, M.; Heidbrink, W. W.; Liu, D.
- Physics of Plasmas, Vol. 16, Issue 5
Suppression of nonlinear frequency-sweeping of resonant interchange modes in a magnetic dipole with applied radio frequency fields
journal, May 2003
- Maslovsky, D.; Levitt, B.; Mauel, M. E.
- Physics of Plasmas, Vol. 10, Issue 5
Reversed shear Alfvén eigenmode stabilization by localized electron cyclotron heating
journal, February 2008
- Van Zeeland, M. A.; Heidbrink, W. W.; Nazikian, R.
- Plasma Physics and Controlled Fusion, Vol. 50, Issue 3
Mitigation of NBI-driven Alfvén eigenmodes by electron cyclotron heating in the TJ-II stellarator
journal, July 2013
- Nagaoka, K.; Ido, T.; Ascasíbar, E.
- Nuclear Fusion, Vol. 53, Issue 7
Weak effect of ion cyclotron acceleration on rapidly chirping beam-driven instabilities in the National Spherical Torus Experiment
journal, August 2006
- Heidbrink, W. W.; Ruskov, E.; Fredrickson, E. D.
- Plasma Physics and Controlled Fusion, Vol. 48, Issue 9
Systematic study of toroidicity-induced Alfvén eigenmodes at low- q discharges in JT-60U
journal, September 1998
- Saigusa, M.; Kimura, H.; Kusama, Y.
- Plasma Physics and Controlled Fusion, Vol. 40, Issue 9
Nature of Monster Sawteeth and Their Relationship to Alfvén Instabilities in Tokamaks
journal, February 2000
- Bernabei, S.; Bell, M. G.; Budny, R. V.
- Physical Review Letters, Vol. 84, Issue 6
Magnetic safety factor profile before and after sawtooth crashes investigated with toroidicity and ellipticity induced Alfvén eigenmodes
journal, September 2001
- Kramer, G. J.; Cheng, C. Z.; Kusama, Y.
- Nuclear Fusion, Vol. 41, Issue 9
Fast-ion redistribution and loss due to edge perturbations in the ASDEX Upgrade, DIII-D and KSTAR tokamaks
journal, November 2013
- Garcia-Munoz, M.; Äkäslompolo, S.; Asunta, O.
- Nuclear Fusion, Vol. 53, Issue 12
Mitigation of Alfvén Activity in a Tokamak by Externally Applied Static 3D Fields
journal, June 2013
- Bortolon, A.; Heidbrink, W. W.; Kramer, G. J.
- Physical Review Letters, Vol. 110, Issue 26
Computation of three-dimensional tokamak and spherical torus equilibria
journal, May 2007
- Park, Jong-kyu; Boozer, Allen H.; Glasser, Alan H.
- Physics of Plasmas, Vol. 14, Issue 5
Exploration of spherical torus physics in the NSTX device
journal, March 2000
- Ono, M.; Kaye, S. M.; Peng, Y. -K. M.
- Nuclear Fusion, Vol. 40, Issue 3Y
The effect of progressively increasing lithium coatings on plasma discharge characteristics, transport, edge profiles and ELM stability in the National Spherical Torus Experiment
journal, June 2012
- Maingi, R.; Boyle, D. P.; Canik, J. M.
- Nuclear Fusion, Vol. 52, Issue 8
On Demand Triggering of Edge Localized Instabilities Using External Nonaxisymmetric Magnetic Perturbations in Toroidal Plasmas
journal, January 2010
- Canik, J. M.; Maingi, R.; Evans, T. E.
- Physical Review Letters, Vol. 104, Issue 4
High spatial sampling global mode structure measurements via multichannel reflectometry in NSTX
journal, August 2011
- Crocker, N. A.; Peebles, W. A.; Kubota, S.
- Plasma Physics and Controlled Fusion, Vol. 53, Issue 10
Theory and observations of high frequency Alfv n eigenmodes in low aspect ratio plasmas
journal, March 2003
- Gorelenkov, N. N.; Fredrickson, E.; Belova, E.
- Nuclear Fusion, Vol. 43, Issue 4
Compressional Alfvén eigenmode instability in NSTX
journal, August 2002
- Gorelenkov, N. N.; Cheng, C. Z.; Fredrickson, E.
- Nuclear Fusion, Vol. 42, Issue 8
Alfven cyclotron instability and ion cyclotron emission
journal, December 1995
- Gorelenkov, N. N.; Cheng, C. Z.
- Nuclear Fusion, Vol. 35, Issue 12
Central flattening of the fast-ion profile in reversed-shear DIII-D discharges
journal, June 2008
- Heidbrink, W. W.; Van Zeeland, M. A.; Austin, M. E.
- Nuclear Fusion, Vol. 48, Issue 8
Calculations of two-fluid magnetohydrodynamic axisymmetric steady-states
journal, November 2009
- Ferraro, N. M.; Jardin, S. C.
- Journal of Computational Physics, Vol. 228, Issue 20
Some properties of the M3D-C1 form of the three-dimensional magnetohydrodynamics equations
journal, September 2009
- Breslau, J.; Ferraro, N.; Jardin, S.
- Physics of Plasmas, Vol. 16, Issue 9
Plasma shaping effects on the geodesic acoustic mode in the large orbit drift width limit
journal, September 2010
- Gao, Zhe
- Physics of Plasmas, Vol. 17, Issue 9
Equilibrium analysis of current profiles in tokamaks
journal, June 1990
- Lao, L. L.; Ferron, J. R.; Groebner, R. J.
- Nuclear Fusion, Vol. 30, Issue 6
A description of the full-particle-orbit-following SPIRAL code for simulating fast-ion experiments in tokamaks
journal, January 2013
- Kramer, G. J.; Budny, R. V.; Bortolon, A.
- Plasma Physics and Controlled Fusion, Vol. 55, Issue 2
The tokamak Monte Carlo fast ion module NUBEAM in the National Transport Code Collaboration library
journal, June 2004
- Pankin, Alexei; McCune, Douglas; Andre, Robert
- Computer Physics Communications, Vol. 159, Issue 3
Hybrid guiding-centre/full-orbit simulations in non-axisymmetric magnetic geometry exploiting general criterion for guiding-centre accuracy
journal, April 2015
- Pfefferlé, D.; Graves, J. P.; Cooper, W. A.
- Plasma Physics and Controlled Fusion, Vol. 57, Issue 5
Fast ion transport during applied 3D magnetic perturbations on DIII-D
journal, June 2015
- Van Zeeland, M. A.; Ferraro, N. M.; Grierson, B. A.
- Nuclear Fusion, Vol. 55, Issue 7
Calculations of two-fluid linear response to non-axisymmetric fields in tokamaks
journal, May 2012
- Ferraro, N. M.
- Physics of Plasmas, Vol. 19, Issue 5
Stability of global Alfven waves (TAE, EAE) in JET tritium discharges
journal, May 1994
- Kerner, W.; Borba, D.; Huysmans, G. T. A.
- Plasma Physics and Controlled Fusion, Vol. 36, Issue 5
Operation of the NSTX Thomson scattering system
journal, March 2003
- LeBlanc, B. P.; Bell, R. E.; Johnson, D. W.
- Review of Scientific Instruments, Vol. 74, Issue 3
Radial resolution enhancement of the NSTX Thomson scattering diagnostic
journal, October 2012
- LeBlanc, B. P.; Diallo, A.; Labik, G.
- Review of Scientific Instruments, Vol. 83, Issue 10
Fast-ion energy loss during TAE avalanches in the National Spherical Torus Experiment
journal, December 2012
- Fredrickson, E. D.; Crocker, N. A.; Darrow, D. S.
- Nuclear Fusion, Vol. 53, Issue 1
Nonlinear Dynamics of a Driven Mode near Marginal Stability
journal, February 1996
- Berk, H. L.; Breizman, B. N.; Pekker, M.
- Physical Review Letters, Vol. 76, Issue 8
Energetic particle physics in fusion research in preparation for burning plasma experiments
journal, November 2014
- Gorelenkov, N. N.; Pinches, S. D.; Toi, K.
- Nuclear Fusion, Vol. 54, Issue 12
Shear Alfvén continua in stellarators
journal, August 2003
- Spong, D. A.; Sanchez, R.; Weller, A.
- Physics of Plasmas, Vol. 10, Issue 8
Steepest-descent moment method for three-dimensional magnetohydrodynamic equilibria
journal, January 1983
- Hirshman, S. P.
- Physics of Fluids, Vol. 26, Issue 12
Modeling fast-ion transport during toroidal Alfvén eigenmode avalanches in National Spherical Torus Experiment
journal, December 2009
- Fredrickson, E. D.; Crocker, N. A.; Bell, R. E.
- Physics of Plasmas, Vol. 16, Issue 12
Calculation of continuum damping of Alfvén eigenmodes in tokamak and stellarator equilibria
journal, September 2015
- Bowden, G. W.; Hole, M. J.; Könies, A.
- Physics of Plasmas, Vol. 22, Issue 9
Confinement of High-Energy Trapped Particles in Tokamaks
journal, August 1981
- Goldston, R. J.; White, R. B.; Boozer, A. H.
- Physical Review Letters, Vol. 47, Issue 9
Numerical optimization of three-dimensional coils for NSTX-U
journal, September 2015
- Lazerson, S. A.; Park, J-K; Logan, N.
- Plasma Physics and Controlled Fusion, Vol. 57, Issue 10
Mitigation of Alfven activity by 3D magnetic perturbations on NSTX
dataset, January 2016
- Kramer, G.; Bortolon, A.; Ferraro, N.
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Hybrid guiding-centre/full-orbit simulations in non-axisymmetric magnetic geometry exploiting general criterion for guiding-centre accuracy
text, January 2014
- Pfefferlé, David; Graves, Jonathan P.; Cooper, Wilfred A.
- arXiv
Works referencing / citing this record:
Stellarator Research Opportunities: A Report of the National Stellarator Coordinating Committee
journal, February 2018
- Gates, David A.; Anderson, David; Anderson, S.
- Journal of Fusion Energy, Vol. 37, Issue 1
Energetic particles in spherical tokamak plasmas
journal, March 2017
- McClements, K. G.; Fredrickson, E. D.
- Plasma Physics and Controlled Fusion, Vol. 59, Issue 5
Active control of Alfvén eigenmodes in magnetically confined toroidal plasmas
journal, March 2019
- Garcia-Munoz, M.; Sharapov, S. E.; Van Zeeland, M. A.
- Plasma Physics and Controlled Fusion, Vol. 61, Issue 5
Recent advances in stellarator optimization
journal, October 2017
- Gates, D. A.; Boozer, A. H.; Brown, T.
- Nuclear Fusion, Vol. 57, Issue 12
Observation of toroidal Alfvén eigenmode excited by energetic electrons induced by static magnetic perturbations in the EAST tokamak
journal, August 2018
- Chu, N.; Sun, Y.; Gu, S.
- Nuclear Fusion, Vol. 58, Issue 10
Active real-time control of Alfvén eigenmodes by neutral beam and electron cyclotron heating in the DIII-D tokamak
journal, September 2018
- Hu, Wenhui; Olofsson, K. E. J.; Welander, A. S.
- Nuclear Fusion, Vol. 58, Issue 12
Modelling of beam-driven Alfvén modes in TJ-II plasmas
journal, March 2019
- Rakha, Allah; Mantsinen, M. J.; Melnikov, A. V.
- Nuclear Fusion, Vol. 59, Issue 5
Shear Alfvén wave continuum spectrum with bifurcated helical core equilibria
journal, September 2019
- Rakha, Allah; Lauber, Ph.; Mantsinen, M. J.
- Nuclear Fusion, Vol. 59, Issue 10
Resonant effects on the loss of energetic trapped ions induced by low- n resonant magnetic perturbations
journal, October 2019
- He, K.; Wan, B. N.; Sun, Y.
- Nuclear Fusion, Vol. 59, Issue 12
Beta-induced Alfvén eigenmodes destabilized by resonant magnetic perturbations in the J-TEXT tokamak
journal, October 2019
- Liu, Linzi; Zhuang, Ge; Hu, Qiming
- Nuclear Fusion, Vol. 59, Issue 12
Mitigation of Alfven activity by 3D magnetic perturbations on NSTX
dataset, January 2016
- Kramer, G.; Bortolon, A.; Ferraro, N.
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)