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Modelling of plasma response to RMP fields in MAST and ITER

Yueqiang Liu (Institutionen för rymd- och geovetenskap, Transportteori) ; Y. Gribov ; M.P. Gryaznevich ; T.C. Hender ; A. Kir ; E. Nardon
Nuclear Fusion (0029-5515). Vol. 51 (2011), p. 083002.
[Artikel, refereegranskad vetenskaplig]

The resonant magnetic perturbation (RMP) fields, including the plasma response, are computed within a linear, full toroidal, single-fluid resistive magnetohydrodynamic (MHD) model, and under realistic plasma conditions for MAST and ITER. The response field is found to be considerably reduced, compared with the vacuum field produced by the magnetic perturbation coils. This field reduction relies strongly on the screening effect from the toroidal plasma rotation. Computations also quantify three-dimensional (3D) distortions of the plasma surface, caused by RMP fields. A correlation is found between the computed mode structures, the plasma surface displacement and the observed density pump-out effect in MAST experiments. Generally, the density pump-out tends to occur when the surface displacement peaks near the X-points.



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Denna post skapades 2011-12-14. Senast ändrad 2012-09-19.
CPL Pubid: 150073

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Transportteori (2010-2012)

Ämnesområden

Energi
Plasmafysik
Fusion

Chalmers infrastruktur