Mainz 2022 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

P: Fachverband Plasmaphysik

P 9: Poster I

P 9.8: Poster

Dienstag, 29. März 2022, 16:00–17:30, P

Tackling turbulence in the plasma edge pedestal with a revised version of the GENE code — •L. A. Leppin, T. Görler, F. Jenko, M. Cavedon, M. G. Dunne, and The ASDEX Upgrade Team — Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching b. München, Germany

A major challenge for future fusion power plants is the turbulent plasma dynamics on the microscale, which causes detrimental levels of outward transport of energy and particles. Many open questions on the properties of this dynamics remain in particular for the plasma edge pedestal, which is characterized by strong gradients of temperature and density, causing strong electromagentic fluctuations. An important approach to advance the understanding of turbulent plasma dynamics in the edge are high-fidelity simulations based on 5D gyrokinetic theory. Here we present ASDEX-Upgrade pedestal simulations using a new modification of the well-established gyrokinetic, Eulerian, delta-f code GENE (genecode.org), which enables numerically stable global, electromagnetic simulations at experimental beta values. We systematically investigate the present instabilities and resulting heat fluxes via local, linear as well as global, non-linear simulations. By using experimental temperature profiles and magnetic equilibria from four timepoints within an edge localized mode (ELM) of an ASDEX Upgrade discharge we aim to contribute to the understanding of ELM dynamics on the microscale. Furthermore, we demonstrate the applicability of the new GENE modifications to scenarios from other tokamaks.