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Demonstration of Safe Termination of Megaampere Relativistic Electron Beams in Tokamaks
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SYSNO ASEP 0554787 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Demonstration of Safe Termination of Megaampere Relativistic Electron Beams in Tokamaks Author(s) Reux, C. (FR)
Paz-Soldan, C. (US)
Aleynikov, P. (DE)
Bandaru, V. (US)
Ficker, Ondřej (UFP-V) ORCID
Silburn, S. (GB)
Hoelzl, M. (DE)
Jachmich, S. (FR)
Eidietis, N. (US)
Lehnen, M. (FR)
Sridhar, S. (FR)Number of authors 11 Article number 175001 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 126, č. 17 (2021)Number of pages 7 s. Language eng - English Country US - United States Keywords tokamak ; electron beam ; fusion Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Method of publishing Open access Institutional support UFP-V - RVO:61389021 UT WOS 000652837500016 EID SCOPUS 85105656249 DOI 10.1103/PhysRevLett.126.175001 Annotation For the first time it is experimentally demonstrated on the JET tokamak that a combination of a low impurity concentration bulk plasma and large magnetohydrodynamic instabilities is able to suppress relativistic electron beams without measurable heat loads onto the plasma facing components. Magnetohydrodynamic simulations of the instability and modeling of the postinstability plasma confirm the prompt loss of runaways and the absence of regeneration during the final current collapse. These surprising findings motivate a new approach to dissipate runaway electrons generated during tokamak plasma disruptions. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2022 Electronic address https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.126.175001
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