Hannover 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...

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

P: Fachverband Plasmaphysik

P 5: Poster Session 1

P 5.11: Poster

Montag, 9. März 2020, 16:30–18:30, Empore Lichthof

Runaway electron modeling in massive material injection scenarios in ASDEX Upgrade — •Oliver Linder, Emiliano Fable, Frank Jenko, Gergely Papp, Gabriella Pautasso, and the ASDEX Upgrade Team — Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany

In current-carrying fusion devices, the conversion of a large fraction of the plasma current to runaway electrons (RE) following the sudden loss of thermal energy poses a threat to the integrity of the plasma vessel. However, RE formation may be suppressed by massive material injection (MMI); a concept presently being investigated experimentally across various devices. To complement extrapolation to future devices, RE model development and validation is mandatory.

This work reports on simulations of MMI scenarios in ASDEX Upgrade (AUG) with the transport toolset ASTRA-STRAHL, where recently developed (fluid) models for RE generation have been implemented. It is shown, that correct simulation of material penetration and consideration of the impact of partially ionized impurities on RE formation are a prerequisite to capture the RE response in AUG argon injection discharges. Within this framework, edge gas injection simulations for varying impurity amounts and types (such as D, Ne, Ar, Kr) are performed and compared to experimentally observed trends in RE behavior.