Linear MHD stability analysis of post-disruption plasmas in ITER
- Authors: Aleynikova K.1,2, Huijsmans G.T.3, Aleynikov P.1
-
Affiliations:
- Max-Planck-Institut für Plasmaphysik
- Moscow Institute of Physics and Technology
- ITER Organization
- Issue: Vol 42, No 5 (2016)
- Pages: 486-494
- Section: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/185749
- DOI: https://doi.org/10.1134/S1063780X16050019
- ID: 185749
Cite item
Abstract
Most of the plasma current can be replaced by a runaway electron (RE) current during plasma disruptions in ITER. In this case the post-disruption plasma current profile is likely to be more peaked than the pre-disruption profile. The MHD activity of such plasma will affect the runaway electron generation and confinement and the dynamics of the plasma position evolution (Vertical Displacement Event), limiting the timeframe for runaway electrons and disruption mitigation. In the present paper, we evaluate the influence of the possible RE seed current parameters on the onset of the MHD instabilities. By varying the RE seed current profile, we search for subsequent plasma evolutions with the highest and the lowest MHD activity. This information can be applied to a development of desirable ITER disruption scenario.
About the authors
K. Aleynikova
Max-Planck-Institut für Plasmaphysik; Moscow Institute of Physics and Technology
Author for correspondence.
Email: ksenia.aleynikova@gmail.com
Germany, Greifswald, D-17491; Institutskii per. 9, Dolgoprudny, Moscow oblast, 141700
G. T. A. Huijsmans
ITER Organization
Email: ksenia.aleynikova@gmail.com
France, St. Paul Lez Durance Cedex, 13115
P. Aleynikov
Max-Planck-Institut für Plasmaphysik
Email: ksenia.aleynikova@gmail.com
Germany, Greifswald, D-17491