Theoretical Studies on Neoclassical Tearing Modes and Their Stabilization

نویسنده

  • LACKNER Karl
چکیده

Numerical simulation results for the nonlinear evolution of neoclassical tearing modes (NTMs) and the stabilization of NTMs by localized RF current drive are presented. It is shown that the saturated island width does not increase linearly with the local bootstrap current density fraction. The NTMs are found to be stabilized by a localized RF current drive, if a sufficiently large RF current is deposited at the rational surface. However, the modulated current drive to deposit the RF current at the o-point of the island has approximately the same stabilizing effect as a continuous RF current drive.

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تاریخ انتشار 2008