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Modelling of the edge plasma of MAST in the presence of resonant magnetic perturbations
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2011 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 51, no 8, 083009- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 51, no 8, 083009- p.
Keyword [en]
radial electric-field, tokamak, conductivity
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-41805DOI: 10.1088/0029-5515/51/8/083009ISI: 000294729400010Scopus ID: 2-s2.0-80051618474OAI: oai:DiVA.org:kth-41805DiVA: diva2:445123
Note
QC 20111003Available from: 2011-10-03 Created: 2011-10-03 Last updated: 2017-12-08Bibliographically approved

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Tendler, Michael
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Alfvén Laboratory Centre for Space and Fusion Plasma PhysicsFusion Plasma Physics
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