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P: Fachverband Plasmaphysik

P 19: Poster II

P 19.12: Poster

Donnerstag, 31. März 2022, 16:00–17:30, P

Analysis of ITER instabilities for a reduced transport model development — •Virgil-Alin Popa, Philipp Lauber, and Thomas Hayward-Schneider — Max Planck Institute for Plasma Physics, Garching, Germany

Previous work has suggested that Alfven Eigenmodes (AEs) such as the Toroidal AEs (TAEs) can be partially unstable in ITER: energetic particles (EPs), such as fusion-born alpha-particles or neutral beam ions are energetic enough to resonantly interact with these weakly damped plasma waves. Due to the sensitivity of the AEs* properties on the background kinetic profiles, an automated analysis method is required to study their stability that does not rely upon prior knowledge of the linear mode spectrum, as is the case for most reduced models for EP transport. In view of this, the first automated time-dependent workflow for energetic particle stability analysis was created. This is used as a main tool for various linear stability analysis. An ITER Deuterium-Tritium scenario given by a transport code (METIS) was investigated. From the analysis, one can determine the dependance of the instabilities on the background profiles and the alpha particle population, as needed for profile optimisation or reduced transport models.