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JET and COMPASS asymmetrical disruptions
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SYSNO ASEP 0453779 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title JET and COMPASS asymmetrical disruptions Author(s) Gerasimov, S.N. (GB)
Abreu, P. (PT)
Baruzzo, M. (IT)
Drozdov, V. (GB)
Dvornova, A. (RU)
Havlíček, Josef (UFP-V) RID, ORCID
Hender, T.C. (GB)
Hronová-Bilyková, Olena (UFP-V) RID
Kruezi, U. (GB)
Li, X. (CN)
Markovič, Tomáš (UFP-V) RID
Pánek, Radomír (UFP-V) RID
Rubinacci, G. (IT)
Tsalas, M. (NL)
Ventre, S. (IT)
Villone, F. (IT)
Zakharov, L.E. (US)Source Title Nuclear Fusion. - : Institute of Physics Publishing - ISSN 0029-5515
Roč. 55, č. 11 (2015), s. 113006-113006Number of pages 18 s. Publication form Print - P Language eng - English Country AT - Austria Keywords tokamak ; asymmetrical disruption ; JET ; COMPASS Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects LM2011021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 UT WOS 000366528700009 EID SCOPUS 84946042477 DOI 10.1088/0029-5515/55/11/113006 Annotation Asymmetrical disruptions may occur during ITER operation and they may be accompanied by large sideways forces and rotation of the asymmetry. This is of particular concern because resonance of the rotating asymmetry with the natural frequencies of the vacuum vessel (and other in-vessel components) could lead to large dynamic amplification of the forces. A significant fraction of non-mitigated JET disruptions have toroidally asymmetric currents that flow partially inside the plasma and partially inside the surrounding vacuum vessel ('wall'). The toroidal asymmetries (otherwise known as the appearance of 3D structures) are clearly visible in the plasma current (I-p) and the first plasma current moments. For the first time we present here the asymmetries in toroidal flux measured by the diamagnetic loops and also propose a physical interpretation. The presented data covers the period of JET operation with a C-wall (JET-C from 2005 until late 2009) and with an ITER-like wall Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2016
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