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Modelling of the edge plasma of MAST in the presence of resonant magnetic perturbations
- Rozhansky, V. (author)
- Molchanov, P. (author)
- Kaveeva, E. (author)
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- Voskoboynikov, S. (author)
- Kirk, A. (author)
- Nardon, E. (author)
- Coster, D. (author)
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- (creator_code:org_t)
- 2011-07-07
- 2011
- English.
- In: Nuclear Fusion. - : IOP Publishing. - 0029-5515 .- 1741-4326. ; 51:8, s. 083009-
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The transport code B2SOLPS5.2 is used to simulate L- and H-mode discharges on MAST with and without resonant magnetic perturbations (RMP). The simulated variation of the radial electric field (less negative for RMP) and toroidal rotation (spin-up in the co-current direction for RMP) is in agreement with the experiment. The pump-out effect in the L-modes with high and medium plasma density and in the H-mode is caused by the additional neoclassical radial plasma flow in the electric field modified due to the electron loss along the stochastic field lines. The pump-out in the low-density L-mode can be reproduced only by a significant rise in the turbulent transport coefficients. The modelling suggests strong RMP screening. An analytical model for RMP screening is proposed.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- radial electric-field
- tokamak
- conductivity
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Molchanov, P.
- Kaveeva, E.
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- Kirk, A.
- Nardon, E.
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- Coster, D.
- Tendler, Michael
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- Royal Institute of Technology
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