Effect of plasma elongation on current dynamics during tokamak disruptions
Artikel i vetenskaplig tidskrift, 2020

Plasma terminating disruptions in tokamaks may result in relativistic runaway electron beams with potentially serious consequences for future devices with large plasma currents. In this paper, we investigate the effect of plasma elongation on the coupled dynamics of runaway generation and resistive diffusion of the electric field. We find that elongated plasmas are less likely to produce large runaway currents, partly due to the lower induced electric fields associated with larger plasmas, and partly due to direct shaping effects, which mainly lead to a reduction in the runaway avalanche gain. © Cambridge University Press 2020.

runaway electrons

fusion plasma

Författare

Tünde Fülöp

Subatomär, högenergi- och plasmafysik

Per Helander

Max-Planck-Gesellschaft

Oskar Vallhagen

Subatomär, högenergi- och plasmafysik

Ola Embréus

Subatomär, högenergi- och plasmafysik

Linnea Hesslow

Chalmers, Fysik, Subatomär fysik och plasmafysik

Pontus Svensson

Chalmers, Fysik, Subatomär fysik och plasmafysik

A. Creely

Commonwealth Fusion Systems

Nathan T. Howard

Plasma Science and Fusion Center

P. Rodriguez-Fernandez

Plasma Science and Fusion Center

Journal of Plasma Physics

0022-3778 (ISSN) 1469-7807 (eISSN)

Vol. In Press 474860101

Ämneskategorier

Fusion, plasma och rymdfysik

Annan elektroteknik och elektronik

Den kondenserade materiens fysik

DOI

10.1017/S002237782000001X

Mer information

Senast uppdaterat

2020-02-12