Plasma currents induced by resonant magnetic field perturbations in tokamaks

Reiser, D.; Chandra, D.

doi:10.1063/1.3126548

Journal Article

PreJuSER-4644

Plasma currents induced by resonant magnetic field perturbations in tokamaks

Reiser, D.FZJ* ; Chandra, D.

2009
American Institute of Physics [S.l.]

Physics of plasmas 16, (2009) [10.1063/1.3126548]

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Please use a persistent id in citations: http://hdl.handle.net/2128/18178 doi:10.1063/1.3126548

Abstract: The plasma response on externally applied resonant magnetic field perturbations is studied by means of numerical simulations. It is shown that dependent on collisionality and perturbation strength, plasma currents build up which can compensate the external field. These plasma currents are accompanied by out-of-phase currents and poloidal flows at the resonant surfaces. With an increasing perturbation field the screening of the externally applied field decreases and at a certain level, the vacuum field approximation holds for the total magnetic field. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3126548]

Keyword(s): J

Classification:

Physics, Fluids & Plasmas

Note: The authors would like to thank Professor P. Beyer for helpful discussions. One of the authors (D.C.) also gratefully acknowledges financial support by the European Commission for his stay at IEF-4 in Forschungszentrum Julich GmbH, Germany.

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