München 2019 – wissenschaftliches Programm
P 18.91: Poster
Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax
Self-consistent modelling of runaway electron generation in massive material injection scenarios in current-carrying fusion devices — •Oliver Linder, Emiliano Fable, Frank Jenko, Gergely Papp, and Gabriella Pautasso — Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany
Relativistic electrons (RE) generated during sudden loss of both thermal energy and plasma current in current-carrying fusion devices may severely damage the first wall of these machines. As the presence of a significant RE population consequently has to be avoided in future, large reactors, suppression of REs is currently being studied through massive material injection (MMI) in present-day tokamaks, such as ASDEX Upgrade. To complement experimental studies through numerical simulations, a reduced kinetic description of RE generation is introduced in the tokamak transport code package ASTRA-STRAHL, used already successfully to simulate the pre-thermal quench phase. Plasma energy and particles are evolved self-consistently in a realistic magnetic geometry within this took-kit, allowing for systematic studies of RE generation following the injection of varying amounts and types of material. This contribution presents the tools necessary for modelling MMI scenarios and first results obtained.