Magnetohydrodynamics modelling of H-mode plasma response to external resonant magnetic perturbations
- Association Euratom-CEA, CEA Cadarache, F-13108, St. Paul-lez-Durance (France)
The response of an H-mode plasma to Resonant Magnetic Perturbations (RMPs) generated by so-called 'I-coils' in DIII-D experiments on type I edge localized modes suppression is modelled using the nonlinear reduced magnetohydrodynamics (with zero-{beta}, i.e. zero plasma temperature, in the version used here) code JOREK in X-point geometry. JOREK self-consistently advances in time the magnetic flux, vorticity, and plasma density in the presence of the RMPs. Without any toroidal rotation, the magnetic response from the plasma does not significantly modify the islands widths. A radial convective E-vectorxB-vector plasma transport is observed to occur in the presence of the RMPs. The possibility that this mechanism could explain the enhanced density transport observed experimentally in DIII-D is discussed. Simulations with a rigid-body-like rotation at a fixed velocity shows evidence of a screening of the RMPs. The extension of our results to realistic parameters is discussed.
- OSTI ID:
- 21069829
- Journal Information:
- Physics of Plasmas, Vol. 14, Issue 9; Other Information: DOI: 10.1063/1.2759889; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHARGED-PARTICLE TRANSPORT
COMPUTERIZED SIMULATION
DISTURBANCES
DOUBLET-3 DEVICE
EDGE LOCALIZED MODES
ELECTRON TEMPERATURE
H-MODE PLASMA CONFINEMENT
ION TEMPERATURE
MAGNETIC FLUX
MAGNETIC ISLANDS
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA
PLASMA DENSITY
PLASMA SIMULATION
ROTATION