About: Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST

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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	Sustained edge-localized mode (ELM) mitigation has been achieved using resonant magnetic perturbations (RMPs) on MAST. The ELM frequency increases by up to a factor of eight with a similar reduction in energy loss. A threshold current is observed above which the ELM frequency increases approximately linearly with current in the coils. A comparison of the filament structures observed during the ELMs in the natural and mitigated stages shows that the mitigated ELMs have the characteristics of type I ELMs even though their frequency is higher, their energy loss is reduced and the pedestal pressure gradient is decreased. During the ELM mitigated stage clear lobe structures are observed in visible-light imaging of the X-point region. The size of these lobes is correlated with the increase in ELM frequency observed. The RMPs produce a clear 3D distortion to the plasma and it is likely that these distortions explain why ELMs are destabilized and hence why ELM mitigation occurs. Sustained edge-localized mode (ELM) mitigation has been achieved using resonant magnetic perturbations (RMPs) on MAST. The ELM frequency increases by up to a factor of eight with a similar reduction in energy loss. A threshold current is observed above which the ELM frequency increases approximately linearly with current in the coils. A comparison of the filament structures observed during the ELMs in the natural and mitigated stages shows that the mitigated ELMs have the characteristics of type I ELMs even though their frequency is higher, their energy loss is reduced and the pedestal pressure gradient is decreased. During the ELM mitigated stage clear lobe structures are observed in visible-light imaging of the X-point region. The size of these lobes is correlated with the increase in ELM frequency observed. The RMPs produce a clear 3D distortion to the plasma and it is likely that these distortions explain why ELMs are destabilized and hence why ELM mitigation occurs. (en)
Title	Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST (en)
skos:prefLabel	Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST (en)
skos:notation	RIV/61389021:_____/13:00392034!RIV14-AV0-61389021
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP205/11/2341)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Cahyna, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	112565
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/13:00392034
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	EDGE LOCALIZED MODE; HOMOCLINIC TANGLE; RESONANT MAGNETIC PERTURBATION; ELM; EQUILIBRIA; EVOLUTION; STABILITY; TOKAMAKS (en)
http://linked.open.../riv/klicoveSlovo	ELM STABILITY EDGE LOCALIZED MODE EQUILIBRIA HOMOCLINIC TANGLE RESONANT MAGNETIC PERTURBATION TOKAMAKS EVOLUTION
http://linked.open...odStatuVydavatele	AT - Rakouská republika
http://linked.open...ontrolniKodProRIV	[23D2753B858E]
http://linked.open...i/riv/nazevZdroje	Nuclear Fusion
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	13 (xsd:int)
http://linked.open...vavai/riv/projekt	Control of edge localized modes in tokamaks by external magnetic perturbations
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	53
http://linked.open...iv/tvurceVysledku	Liu, Y. Kirk, A. Cahyna, Pavel Denner, P. Nardon, E. Scannell, R. Liang, Y. Chapman, I. T. Harrison, J. R. Thornton, A. J. Fishpool, G. Ham, C. J. Saarelma, S.
http://linked.open...ain/vavai/riv/wos	000316049300008
issn	0029-5515
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0029-5515/53/4/043007

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