Hybrid MHD-Gyrokinetic codes: extended models, new implementations and forthcoming applications

Abstract. The hybrid MHD-Gyrokinetic model has been proven to be very successful in describing the coupling between Alfvén waves and energetic particles and their mutual interaction in toroidal devices. HMGC, the nonlinear MHD-Gyrokinetic code originally developed at the Frascati laboratories, is being currently extended to include new physics. In this paper we will present the first simulations of an electron fishbone mode using the extended HMGC code. We will also present some benchmarks of the new hybrid code HYMAGYC (linear resistive MHD in general curvilinear geometry plus fully nonlinear gyrokinetic description, k⊥ρH ∼ 1, of the energetic particles) with the results obtained by HMGC and an analytical expression of the energetic particle response.