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Runaway electron generation in tokamak disruptions
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Smith, H. M. (Hakan M.), Feher, T., Fulop, T., Gal, K. and Verwichte, E. (Erwin) (2009) Runaway electron generation in tokamak disruptions. Plasma Physics and Controlled Fusion, Vol.51 (No.12). article no.124008 . doi:10.1088/0741-3335/51/12/124008 ISSN 0741-3335.
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Official URL: http://dx.doi.org/10.1088/0741-3335/51/12/124008
Abstract
Runaway electrons can be generated in disruptions by the Dreicer, hot tail and avalanche mechanisms. Analytical and numerical results for hot tail runaway generation are included in a one-dimensional model of electric field, temperature and runaway current, which is applied to simulate disruptions and fast shutdown. The peaked shape of the runaway current density profile may cause tearing modes to become unstable. Fast shutdown is studied by prescribing varying amounts of injected impurities. Large argon content suppresses runaways in JET simulations but causes hot tail generation in ITER. A pellet code is coupled to the runaway model, and it is extended to enable simulations of carbon doped deuterium pellet injection. Such pellets are seen not to give enough cooling for a fast current quench.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Plasma (Ionized gases), Inertial confinement fusion, Tokamaks | ||||
Journal or Publication Title: | Plasma Physics and Controlled Fusion | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0741-3335 | ||||
Official Date: | December 2009 | ||||
Dates: |
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Volume: | Vol.51 | ||||
Number: | No.12 | ||||
Number of Pages: | 8 | ||||
Page Range: | article no.124008 | ||||
DOI: | 10.1088/0741-3335/51/12/124008 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Funder: | European Commission (EC), Engineering and Physical Sciences Research Council (EPSRC) | ||||
Version or Related Resource: | Presented at: 36th European Physical Society Conference on Plasma Physics, Natl Palace Culture, Sofia, Bulgaria, June 29-July 03, 2009 | ||||
Conference Paper Type: | Paper | ||||
Type of Event: | Conference |
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