Abstract

We have developed a numerical code to investigate steady state neutral-beam-driven, ohmic and bootstrap currents which are consistent with MHD equilibrium. The code can describe the effects of mirror trapping, energy diffusion, and bounce motion of fast ions on the beam-driven current. The bootstrap current is evaluated for multispecies ions including impurity and unthermalized fast ions. An iterative algorithm is employed to obtain a self-consistent current and MHD equilibrium. MHD stability for the converged solution can also be investigated with the code.

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