Full toroidal plasma response to externally applied nonaxisymmetric magnetic fields

The plasma response to resonant magnetic perturbation (RMP) and nonresonant perturbation fields is computed within a linear, full toroidal, single-fluid resistive magnetohydrodynamic framework. The response of resonant harmonics depends sensitively on the plasma resistivity and on the toroidal rotat...

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Bibliographic Details
Published in:Physics of plasmas 2010-12, Vol.17 (12), p.122502-122502-17
Main Authors: Liu, Yueqiang, Kirk, A., Nardon, E.
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIAMAGNETISM
DISTURBANCES
FLUID MECHANICS
FUNCTIONS
HARMONICS
HYDRODYNAMICS
MAGNETIC FIELDS
MAGNETISM
MAGNETOHYDRODYNAMICS
MECHANICS
MOTION
OSCILLATIONS
PLASMA
PLASMA DIAMAGNETISM
PLASMA PRESSURE
PLASMA SIMULATION
RESPONSE FUNCTIONS
ROTATION
SIMULATION
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Summary:The plasma response to resonant magnetic perturbation (RMP) and nonresonant perturbation fields is computed within a linear, full toroidal, single-fluid resistive magnetohydrodynamic framework. The response of resonant harmonics depends sensitively on the plasma resistivity and on the toroidal rotation. The response of nonresonant harmonics is not sensitive to most of the plasma parameters, except the equilibrium pressure. Both midplane and the off midplane odd parity RMP coils trigger a similar field response from the plasma. The RMP fields with different toroidal mode numbers trigger qualitatively similar plasma response. A simple model of the electron diamagnetic flow suggests significant effects both in the pedestal region and beyond.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.3526677