Erlangen 2026 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 16: Poster Session Plasma Physics
P 16.110: Poster
Donnerstag, 19. März 2026, 13:45–15:45, Redoutensaal
First interpretative local ERO2.0 modelling of tungsten erosion experiments at W7-X — •Claudio Maria De Simone1, Chandra-Prakash Dhard1, Dirk Naujoks1, Juri Romazanov2, and Sebastijan Brezinsek2 — 1Max-Planck Institute for Plasma Physics, Wendelsteinstrasse 1, 17491 Greifswald, Germany — 2Forschungszentrum Jülich GmbH, Institute of Fusion Energy and Nuclear Waste Management - Plasma Physics, 52425 Jülich, Germany
Tungsten has been chosen as the most promising material for plasma-facing components (PFCs), in future fusion devices, due to its favorable thermo-mechanical properties, low fuel retention, and low sputtering. While in tokamak devices tungsten erosion, deposition and transport has been extensively investigated, in stellarators such studies remain limited. This work aims to extend PWI knowledge for W7-X with the use of ERO2.0 developed by FZJ. This 3D Monte-Carlo is used to model local W erosion and migration for some baffle modules equipped with W tiles. Different 3D plasma solutions and scenarios as generated by EMC3-EIRENE will be used as an input for ERO2.0 modeling. A material-mixing model will be applied to consider the change of W surface concentration due to the impact of carbon impurity ions. The results of these simulations will be validated against in-situ spectroscopy and post-mortem analysis of exposed samples.
Keywords: Tungsten; Plasma-Wall Interaction; Plasma-Facing Unit; Erosion; Impurity transport