Reduced kinetic modelling of shattered pellet injection in ASDEX upgrade
Artikel i vetenskaplig tidskrift, 2025
Plasma-Terminating disruptions represent a critical outstanding issue for reactor-relevant tokamaks. ITER will use shattered pellet injection (SPI) as its disruption mitigation system to reduce heat loads, vessel forces and to suppress the formation of runaway electrons. In this paper we demonstrate that reduced kinetic modelling of SPI is capable of capturing the major experimental trends in ASDEX Upgrade SPI experiments, such as dependence of the radiated energy fraction on neon content, or the current quench dynamics. Simulations are also consistent with the experimental observation of no runaway electron generation with neon and mixed deuterium-neon pellet composition. We also show that statistical variations in the fragmentation process only have a notable impact on the disruption dynamics at intermediate neon doping, as was observed in experiments.
plasma simulation
plasma dynamics
Författare
P. Halldestam
Max-Planck-Gesellschaft
P. Heinrich
Max-Planck-Gesellschaft
Gergely Papp
Max-Planck-Gesellschaft
Mathias Hoppe
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
Kungliga Tekniska Högskolan (KTH)
M. Hoelzl
Max-Planck-Gesellschaft
Istvan Pusztai
Subatomär, högenergi- och plasmafysik
Oskar Vallhagen
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
R. Fischer
Max-Planck-Gesellschaft
Frank Jenko
Max-Planck-Gesellschaft
Journal of Plasma Physics
0022-3778 (ISSN) 1469-7807 (eISSN)
Vol. 91 4 E104Ämneskategorier (SSIF 2025)
Fusion, plasma och rymdfysik
Annan fysik
DOI
10.1017/S0022377825100470