SMuK 2021 – scientific programme

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P: Fachverband Plasmaphysik

P 17: Poster II

P 17.33: Poster

Friday, September 3, 2021, 14:00–16:00, P

Gyrokinetic modelling of anisotropic energeticparticle driven instabilities in tokamak plasmas — •Brando Rettino, Alberto Bottino, Alessandro Biancalani, Thomas Hayward-Schneider, Philipp Lauber, and Markus Weiland — Max Planck Institute for Plasma Physics, Garching, Germany

Energetic particles produced by plasma heating can excite instabilities in tokamaks. We study the effects of anisotropy of distribution functions on the excitation of such instabilities with ORB5, a gyrokinetic particle in cell code. Analytical anisotropic expressions for the distribution function are implemented and numerical results are shown for linear electrostatic simulations with ORB5. The growth rate is found to be sensitively dependent on the phase-space shape of the distribution function. Realistic neutral beam energetic particle anisotropic distributions are obtained from the heating solver RABBIT and are introduced in ORB5 as input distribution function.