Implications of X-point lobe structures due to resonant magnetic perturbations on MAST

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F12%3A00383598" target="_blank" >RIV/61389021:_____/12:00383598 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Implications of X-point lobe structures due to resonant magnetic perturbations on MAST
Original language description
In order to assess the effectiveness of RMPs in mitigating the divertor power loading due to type I ELMs, experiments were performed on MAST using a set of 18 RMP coils. These have allowed ELM mitigation to be established in plasmas by applying fields with toroidal mode numbers n = 3, 4 or 6. Coincident with the effect of RMPs on the ELMs, for the first time, clear lobe structures have been observed to form near the x-point. These lobes, or manifold structures, have been predicted previously, and theseobservations are the first detailed measurements of their spatial structure in a range of plasma and RMP configurations. The appearance of the lobes is correlated with the effect of the RMPs on the plasma, which is manifest as a density pump out or an increase in ELM frequency, but form at a different ELM coil current threshold than for ELM mitigation.
Czech name
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Czech description
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Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
EPS Europhysics Conference Abstracts Volume 36F ? Contributed papers
ISBN
2-914771-79-7
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
"O2.104"-"O2.104"
Publisher name
European Physical Society
Place of publication
Mulhouse
Event location
Stockholm
Event date
Jul 2, 2012
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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