Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks
Abstract
Ideal plasma shielding and ampli cation of the resonant magnetic perturbations in non-axisymmetric tokamak is presented with full ideal plasma response calculations. Magnetic field line tracing simulations in NSTX with toroidal non-axisymmetry indicate the ideal plasma response can significantly shield/amplify and phase shift the vacuum resonant magnetic perturbations. Ideal plasma shielding for n = 3 mode is found to prevent magnetic islands from opening as consistently shown in the field line connection length pro le and magnetic footprints on the divertor target. It is also found that the ideal plasma shielding modifies the degree of stochasticity but does not change the overall helical lobe structures of the vacuum field. Amplification of vacuum fields by the ideal plasma response is predicted for low toroidal mode n = 1, better reproducing measurements of strong striation of the field lines on the divertor plate in NSTX.
- Authors:
-
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Korea Advanced Institute of Science and Technology, Daejeon (Korea)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE; National Research Foundation of Korea (NRF)
- Contributing Org.:
- Research funded by The National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2014M1A7A1A03045092) | U.S. Department of Energy (DE-AC02-09CH11466, DE-AC52-07NA27344)
- OSTI Identifier:
- 1255637
- Alternate Identifier(s):
- OSTI ID: 1238812; OSTI ID: 1305816
- Report Number(s):
- PPPL-5155; LLNL-JRNL-666904
Journal ID: ISSN 0741-3335
- Grant/Contract Number:
- AC02-09CH11466; AC52-07NA27344; NRF-2014M1A7A1A03045092
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 57; Journal Issue: 10; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; magnetic fields effects; Monte Carlo methods; tokamaks; NSTX; 70 PLASMA PHYSICS AND FUSION
Citation Formats
Kim, Kimin, Ahn, J. -W., Scotti, F., Park, J. -K., and Menard, J. E. Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks. United States: N. p., 2015.
Web. doi:10.1088/0741-3335/57/10/104002.
Kim, Kimin, Ahn, J. -W., Scotti, F., Park, J. -K., & Menard, J. E. Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks. United States. https://doi.org/10.1088/0741-3335/57/10/104002
Kim, Kimin, Ahn, J. -W., Scotti, F., Park, J. -K., and Menard, J. E. Thu .
"Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks". United States. https://doi.org/10.1088/0741-3335/57/10/104002. https://www.osti.gov/servlets/purl/1255637.
@article{osti_1255637,
title = {Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks},
author = {Kim, Kimin and Ahn, J. -W. and Scotti, F. and Park, J. -K. and Menard, J. E.},
abstractNote = {Ideal plasma shielding and ampli cation of the resonant magnetic perturbations in non-axisymmetric tokamak is presented with full ideal plasma response calculations. Magnetic field line tracing simulations in NSTX with toroidal non-axisymmetry indicate the ideal plasma response can significantly shield/amplify and phase shift the vacuum resonant magnetic perturbations. Ideal plasma shielding for n = 3 mode is found to prevent magnetic islands from opening as consistently shown in the field line connection length pro le and magnetic footprints on the divertor target. It is also found that the ideal plasma shielding modifies the degree of stochasticity but does not change the overall helical lobe structures of the vacuum field. Amplification of vacuum fields by the ideal plasma response is predicted for low toroidal mode n = 1, better reproducing measurements of strong striation of the field lines on the divertor plate in NSTX.},
doi = {10.1088/0741-3335/57/10/104002},
journal = {Plasma Physics and Controlled Fusion},
number = 10,
volume = 57,
place = {United States},
year = {Thu Sep 03 00:00:00 EDT 2015},
month = {Thu Sep 03 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
Enhanced fast ion prompt loss due to resonant magnetic perturbations in KSTAR
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- Kim, Kimin; Jhang, Hogun; Kim, Junghee
- Physics of Plasmas, Vol. 25, Issue 12