Long slide-away discharges in the COMPASS tokamak

0469829 - ÚFP 2017 RIV US eng A - Abstract
Ficker, Ondřej - Mlynář, Jan - Vlainić, M. - Weinzettl, Vladimír - Urban, Jakub - Cavalier, Jordan - Havlíček, Josef - Pánek, Radomír - Hron, Martin - Čeřovský, Jaroslav - Vondráček, Petr - Papřok, Richard - Decker, J. - Peysson, Y. - Bogár, Ondrej - Stahl, A.
Long slide-away discharges in the COMPASS tokamak.
Bulletin of the American Physical Society. Vol. 18. San Jose: American Physical Society, 2016. s. 156. ISSN 0003-0503.
[APS 58th Annual Meeting of the APS Division of Plasma Physics /58./. 31.10.2016-04.11.2016, San Jose, California]
R&D Projects: GA MŠMT LG14002; GA MŠMT(CZ) LM2015045
Institutional support: RVO:61389021
Keywords : RE (runaway electron) * COMPASS * MHD * HXR * Photoneutrons * Slide-away regime
Subject RIV: BL - Plasma and Gas Discharge Physics
http://flux.aps.org/meetings/YR16/DPP16/all_DPP16.pdf

In this contribution, long runaway electron (RE) dominated discharges achieved in the COMPASS tokamak are presented. The extensive length is possible due to a low consumption of available volt-seconds of the tokamak transformer in this type of discharge. Energetic electron losses in this regime seems to be modulated mainly by small oscillations of a radial position (controller setting) unlike in the RE discharges at higher electron density, where various MHD phenomena affect the evolution of the losses. The behaviour of the slide-away plasma is studied using magnetic coils, HXR detectors, ECE system and a pair of 3He proportional counters of neutrons. The plasma scenario is also modelled using Fokker-Planck codes.
Permanent Link: http://hdl.handle.net/11104/0267619