Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks

Kim, Kimin; Ahn, J. -W.; Scotti, F.; Park, J. -K.; Menard, J. E.

doi:10.1088/0741-3335/57/10/104002

Title: Ideal plasma response to vacuum magnetic fields with resonant magnetic perturbations in non-axisymmetric tokamaks

Journal Article · Thu Sep 03 00:00:00 EDT 2015 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/0741-3335/57/10/104002· OSTI ID:1255637

Kim, Kimin ^[1]; Ahn, J. -W. ^[2]; Scotti, F. ^[3]; Park, J. -K. ^[4]; Menard, J. E. ^[4]

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)

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.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE; National Research Foundation of Korea (NRF)

Contributing Organization:: 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)

Grant/Contract Number:: AC02-09CH11466; AC52-07NA27344; NRF-2014M1A7A1A03045092

OSTI ID:: 1255637

Alternate ID(s):: OSTI ID: 1238812; OSTI ID: 1305816

Report Number(s):: PPPL-5155; LLNL-JRNL-666904

Journal Information:: Plasma Physics and Controlled Fusion, Vol. 57, Issue 10; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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