Počet záznamů: 1
Current quench and vessel currents characterisation at the COMPASS tokamak
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SYSNO ASEP 0564322 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Current quench and vessel currents characterisation at the COMPASS tokamak Tvůrce(i) Matveeva, Ekaterina (UFP-V)
Havlíček, Josef (UFP-V) RID, ORCID
Artola, F. J. (FR)
Yanovskiy, Vadim (UFP-V) ORCID
Havránek, Aleš (UFP-V) ORCID
Adámek, Jiří (UFP-V) RID, ORCID
Gerardin, Jonathan (UFP-V) ORCID
Imríšek, Martin (UFP-V) RID
Loarte, A. (FR)
Ficker, Ondřej (UFP-V) ORCID
Hronová-Bilyková, Olena (UFP-V) RID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RIDCelkový počet autorů 13 Číslo článku 125010 Zdroj.dok. Plasma Physics and Controlled Fusion. - : Institute of Physics Publishing - ISSN 0741-3335
Roč. 64, č. 12 (2022)Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova disruption ; halo current ; tokamak ; compass Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP EF16_019/0000768 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura COMPASS II - 90117 - Ústav fyziky plazmatu AV ČR, v. v. i. Způsob publikování Omezený přístup Institucionální podpora UFP-V - RVO:61389021 UT WOS 000880428600001 EID SCOPUS 85142151621 DOI https://doi.org/10.1088/1361-6587/ac9928 Anotace The characterisation of plasma current quench and understanding of its underlying physical processes play a crucial role when designing large fusion devices such as ITER. For the first time, an extensive analysis of the COMPASS tokamak disruption database is presented. A unique set of magnetic diagnostics allows the investigation of local toroidal and poloidal vessel currents, including currents flowing along the open magnetic field lines from the plasma to the vacuum vessel (VV) (i.e., halo currents). Area-normalised current quench times are in agreement with the ITPA 1.67 ms m(-2) lower limit. Extremely fast I-p quench rates of up to 0.6 MA ms(-1) are observed during runaway electron campaigns at COMPASS, which are under the ITPA lower limit. Vertical movement of the plasma column is accelerated by the I-p quench during major disruptions. Toroidal vessel currents of around 2% 4% of the predisruptive plasma current I-disr(p) I-p quench. Net poloidal eddy currents are obtained by Mirnov coils and diamagnetic loop, reaching 3% of I-disr(p) I-p . Geometric features of the VV structure and in-vessel component positions on the poloidal vessel current measurements are discussed. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2023 Elektronická adresa https://iopscience.iop.org/article/10.1088/1361-6587/ac9928
Počet záznamů: 1