Kinetic modelling of runaway electron dynamics
Forskningsprojekt , 2014 – 2017

Improved understanding of runaway-electron formation and decay processes are of prime interest for the safe operation of large tokamaks, and their dynamics during dynamical scenarios such as disruptions are of particular concern. In this contribution, we present kinetic modelling of scenarios with time-dependent plasma parameters – in particular, we investigate hot-tail runaway generation during a rapid drop in plasma temperature. With the goal of studying runaway-electron generation with a self-consistent electric field-evolution, we also discuss the implementation of a conservative collision operator and demonstrate its properties. An operator for avalanche runaway-electron generation which includes the proper energy dependence of the runaway distribution, is investigated, and the avalanche growth rate is shown to be significantly affected in some parameter regimes. These developments all pave the way for an improved modelling of runaway-electron dynamics during disruptions or other dynamic events.

Deltagare

Tünde Fülöp (kontakt)

Professor vid Chalmers, Fysik, Subatomär fysik och plasmafysik

Ola Embréus

Doktor vid Chalmers, Fysik, Subatomär fysik och plasmafysik

Linnea Hesslow

Doktorand vid Chalmers, Fysik, Subatomär fysik och plasmafysik

Mathias Hoppe

Doktorand vid Chalmers, Fysik, Subatomär fysik och plasmafysik

Adam Stahl

Doktorand vid Chalmers, Fysik, Subatomär fysik och plasmafysik

Finansiering

Europeiska kommissionen (FP7)

Finansierar Chalmers deltagande under 2014

Relaterade styrkeområden och infrastruktur

Energi

Styrkeområden

Mer information

Senast uppdaterat

2019-11-15