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P: Fachverband Plasmaphysik

P 11: Poster I

P 11.24: Poster

Mittwoch, 22. März 2023, 14:00–15:30, HSZ EG

ITG simulations with a fully-kinetic Semi-Lagrangian code — •Aleksandr Mustonen¹, Felipe Nathan de Oliveira², Ken Hagiwara², Sreenivasa Thatikonda², Daniel Told², and Rainer Grauer¹ — ¹The Ruhr Univeristy Bochum — ²Max Planck Institute for Plasma Physics

Gyrokinetic framewrok has become a standart tool to research the phenomena occuring in the nuclear fusion devices. However, steep gradients in the edge region of tokamaks violate the the assumptions used to derive the gyrokinetic theory. Thus, we want to investigate the practical limits of the gyrokinetic theory with a model containing complete physics of the system. We develop a fully kinetic code employing semi-Lagrangian schemes to simulate the slab ion temperature gradient (ITG) mode with various setups, in order to learn the new physical effects that could be present only in the 6D model. Adiabatic electron approximation used to both verify the results with the analytical linear solution and to perform simulations. However, due to the smalness of the electron Larmor radius with comparison to the ion one, we can employ driftkinetic model for electrons to obtain a hybrid electrostatic description for the ITG simulations.