About: MHD perturbation amplitudes required to trigger disruptions

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	For a large database of JET disruptions (>300) the mode amplitude at the start of the thermal quench has been determined. A similar analysis is being performed for ASDEX Upgrade disruptions. It was found that the thermal quench was triggered at a distinct perturbation level depending predominantly on the plasma current. A regression analysis found that this maximum allowable amplitude scaled linearly with the plasma current (I p ) and furthermore depended on the internal inductance (l i ) and the inverse of the edge safety factor, q. This dependence of the measured perturbation on the mode position means that disruptions are triggered at smaller measured amplitude when operating at higher q. This study provides experimental insight in the processes that trigger tokamak disruptions. For a large database of JET disruptions (>300) the mode amplitude at the start of the thermal quench has been determined. A similar analysis is being performed for ASDEX Upgrade disruptions. It was found that the thermal quench was triggered at a distinct perturbation level depending predominantly on the plasma current. A regression analysis found that this maximum allowable amplitude scaled linearly with the plasma current (I p ) and furthermore depended on the internal inductance (l i ) and the inverse of the edge safety factor, q. This dependence of the measured perturbation on the mode position means that disruptions are triggered at smaller measured amplitude when operating at higher q. This study provides experimental insight in the processes that trigger tokamak disruptions. (en)
Title	MHD perturbation amplitudes required to trigger disruptions MHD perturbation amplitudes required to trigger disruptions (en)
skos:prefLabel	MHD perturbation amplitudes required to trigger disruptions MHD perturbation amplitudes required to trigger disruptions (en)
skos:notation	RIV/61389021:_____/14:00441691!RIV15-AV0-61389021
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Cahyna, Pavel
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	29122
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/14:00441691
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Disruption; locked mode; magnetic island (en)
http://linked.open.../riv/klicoveSlovo	Disruption locked mode magnetic island
http://linked.open...ontrolniKodProRIV	[6AF95FDD0ADB]
http://linked.open...v/mistoKonaniAkce	Berlin
http://linked.open...i/riv/mistoVydani	Mulhouse
http://linked.open...i/riv/nazevZdroje	Europhysics conference abstracts Vol. 38F, 41st European Physics Society Conference on Plasma Physics
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Cahyna, Pavel Maraschek, M. Nardon, E. Lehnen, M. de Vries, P. C. Hender, T. C. Gerasimov, S. Huijsmans, G.T.A. Pautasso, G.
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2014-06-23 (xsd:date)
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	European Physical Society
https://schema.org/isbn	2-914771-90-8

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