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Experimental evidence of neoclassical tearing modes on COMPASS tokamak
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SYSNO ASEP 0396213 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Experimental evidence of neoclassical tearing modes on COMPASS tokamak Author(s) Weinzettl, Vladimír (UFP-V) RID, ORCID
Imríšek, Martin (UFP-V) RID
Havlíček, Josef (UFP-V) RID, ORCID
Kripner, L. (CZ)
Seidl, Jakub (UFP-V) RID
Bílková, Petra (UFP-V) RID
Böhm, Petr (UFP-V) RID
Aftanas, Milan (UFP-V) RID
Kovařík, Karel (UFP-V) RID, ORCID
Horáček, Jan (UFP-V) RID, ORCID
Vondráček, Petr (UFP-V) RID, ORCID
Adámek, Jiří (UFP-V) RID, ORCID
Dejarnac, Renaud (UFP-V) RID, ORCID
Cornelis, D. (BE)
Janssens, H. (BE)Source Title EPS 2013:40th European Physical Society Conference on Plasma Physics, Contributed Papers. - Mulhouse : European Physical Society, 2013 - ISBN 2-914771-84-3 Pages p5.143-p5.143, s. 1398-1401 Number of pages 4 s. Publication form Online - E Action European Physical Society Conference on Plasma Physics/40./ Event date 01.07.2013-05.07.2013 VEvent location Espoo Country FI - Finland Event type EUR Language eng - English Country FI - Finland Keywords MHD ; tearing modes ; tokamak Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GAP205/12/2327 GA ČR - Czech Science Foundation (CSF) LM2011021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 EID SCOPUS 84905647051 Annotation Magnetohydrodynamic activity is one of the most important limiting factors in achieving high plasma performance in present tokamaks. A broad experimental evidence of neoclassical tearing modes (NTM) on the COMPASS tokamak is reviewed in the contribution. Plasma performance of discharges with dominating and suppressed MHD activity, including the effect of NBI heating, is compared showing different radial energy and particle outfluxes. Signals of magnetic diagnostics are analyzed in time by Fast Fourier Transform, and in space by the correlation technique. Growth parameters of magnetic islands are derived. Mode locking of the island resulting in disruption behaviour is demonstrated as well as the effect of island healing by plasma current or auxiliary heating changes. Also, a connection of the magnetic islands rotation with periodic modifications of edge plasma density is introduced. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2014
Number of the records: 1