Skenande elektroner i fusionsplasmor
Forskningsprojekt, 2015
– 2026
High-current tokamaks will be susceptible to conversion of the plasma current into a highly energetic runaway electron (RE) beam during plasma initiation and termination events. Such RE beams affect the plasma dynamics and might damage plasma facing components. The goal of this project is to develop methods for avoidance and suppression of REs. This is essential to ensure the safe and reliable operation of future fusion devices. Both plasma initiation and termination are characterized by dramatic transient changes, strong parameter variations (of e.g. density, temperature) and processes operating across a wide range of spatio-temporal scales and in nonlinear regimes. Controlling such behaviour requires theoretical models that capture the inherently multiscale nature of the phenomena, as well as efficient numerical tools and optimization frameworks. We will develop such a tool-set and use it to understand and control RE dynamics during tokamak plasma initiation and termination, including the effect of shattered pellet injection and instabilities. The modelling tools will be validated against experiments using synthetic radiation diagnostic tools, and will be employed to evaluate methods for avoidance or benign termination of RE beams.
Deltagare
Tünde-Maria Fülöp (kontakt)
Chalmers, Fysik och astronomi, Subatomär, högenergi- och plasmafysik
Ola Embréus
Chalmers, Fysik och astronomi, Subatomär, högenergi- och plasmafysik
Mathias Hoppe
Chalmers, Fysik och astronomi, Subatomär, högenergi- och plasmafysik
Finansiering
Vetenskapsrådet (VR)
Projekt-id: 2018-03911
Finansierar Chalmers deltagande under 2018–2021
Vetenskapsrådet (VR)
Projekt-id: 2022-02862
Finansierar Chalmers deltagande under 2023–2026
Vetenskapsrådet (VR)
Projekt-id: 2014-5510
Finansierar Chalmers deltagande under 2015–2018
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Fundament