Erlangen 2026 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 16: Poster Session Plasma Physics
P 16.23: Poster
Donnerstag, 19. März 2026, 13:45–15:45, Redoutensaal
Development of a surface retention model for plasma-wall interactions simulations in the SOLPS-ITER code package — •remo iannini1,2, antonello zito1, tim happel1, david coster1, klaus schmid1, gregor birkenmeier1,2, and the ASDEX Upgrade Team1 — 1Max Planck Institute for Plasma Physics, Garching bei Munchen, Germany — 2Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany
In a fusion reactor, particles escaping the last closed flux surface (LCFS) inevitably interact with the first-wall materials. These surfaces can behave as both sinks and sources for plasma particles, as these can be either absorbed or recycled. Accurately modelling these processes is therefore essential to predict the impact of plasma-wall interactions on plasma transport and exhaust. At present, the SOLPS-ITER code package represents the standard framework for plasma edge modelling. Processes contributing to a long-term retention of plasma particles within the wall surfaces are, however, not currently included within the code capabilities. This PhD project aims to develop a fully integrated, self-consistent wall retention module for the SOLPS-ITER framework, enabling more realistic simulations of plasma-wall interactions by allowing the presence of a temporary wall inventory of plasma particles. This would enable the assessment of impurity dynamics during plasma discharges, the long-term evolution of fuel retention in wall materials, and the prediction of the boronization layer lifetime for ITER.
Keywords: SOLPS-ITER; plasma edge; plasma-wall interaction; surface retention; plasma physics