On the Transition Regime of Nonlinear Error Field Penetration in Toroidal Plasmas
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Graphical Abstract
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Abstract
The error field penetration is numerically studied in the frame of the visco-resistive magnetohydrodynamics (MHD) model. A transition scaling is obtained to link the Rutherford and Waelbroeck regimes in the nonlinear phase of error field penetration process. Furthermore, a transition density scaling of
b r /B T crit ∼ n1/2e is obtained in accord with recent experimental observations in the J-TEXT tokamak.
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