Erlangen 2026 – scientific programme
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P: Fachverband Plasmaphysik
P 16: Poster Session Plasma Physics
P 16.33: Poster
Thursday, March 19, 2026, 13:45–15:45, Redoutensaal
Progress in modelling of shattered pellet injection experiments in fusion plasma — •Ansh Patel1, Gergely Papp1, Akinobu Matsuyama2, Mengdi Kong3, Stefan Jachmich4, Umar Sheikh3, Javier Artola4, Paul Heinrich1, and Eric Nardon5 — 1Max Planck Institute for Plasma Physics, Garching, Germany — 2Kyoto University, Uji, Kyoto, Japan — 3EPFL, Swiss Plasma Center (SPC), Lausanne, Switzerland — 4ITER Organization, France — 5CEA, IRFM, France
Large tokamaks like ITER will require a disruption mitigation system (DMS) like the shattered pellet injection (SPI) to ensure machine protection during disruptions. The SPI system injects cryogenic pellets that are shattered before entering the plasma. For the DMS design validation, the effectiveness of SPI must be assessed by numerical simulations. For this purpose, reduced modelling is applied to scan the wide system parameter space available for optimisation and to understand experimental trends. In this poster, we present recent progress in the modelling of the SPI experiments at ASDEX Upgrade (AUG) and JET tokamaks using the INDEX code. We investigate the pre-thermal-quench (pre-TQ) duration trends for varying neon fraction injections in AUG, an important optimization parameter for multiple injections. We have also implemented a recently developed rocket-force model in INDEX and present some initial model estimates for AUG. Additionally, we also present simulation results of recent plasmoid-drift supression experiments at JET with neon doping.
Keywords: Disruptions; Mitigation; Shattered pellet injection; Pre-TQ duration; Magnetic confinement