Validation of the linear ideal magnetohydrodynamic model of three-dimensional tokamak equilibria

Lanctot, M. J.; Reimerdes, H.; Garofalo, A. M.; Chu, M. S.; Liu, Y. Q.; Strait, E. J.; Jackson, G. L.; La Haye, R. J.; Okabayashi, M.; Osborne, T. H.; Schaffer, M. J.
March 2010
Physics of Plasmas;Mar2010, Vol. 17 Issue 3, p030701
Academic Journal
The first quantitative comparison of linear ideal magnetohydrodynamic (MHD) theory with external magnetic measurements of the nonaxisymmetric plasma perturbation driven by external long-wavelength magnetic fields in high-temperature tokamak plasmas is presented. The comparison yields good (within 20%) agreement for plasma pressures up to ∼75% of the ideal stability limit calculated without a conducting wall. For higher plasma pressures, the ideal MHD model tends to overestimate the perturbed field indicating the increasing importance of stabilizing nonideal effects.


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