Number of the records: 1
Novel concept suppressing plasma heat pulses in a tokamak by fast divertor sweeping
- 1.
SYSNO ASEP 0565859 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Novel concept suppressing plasma heat pulses in a tokamak by fast divertor sweeping Author(s) Horáček, Jan (UFP-V) RID, ORCID
Lukeš, S. (CZ)
Adámek, Jiří (UFP-V) RID, ORCID
Havlíček, Josef (UFP-V) RID, ORCID
Entler, Slavomír (UFP-V) ORCID
Seidl, Jakub (UFP-V) RID
Cavalier, Jordan (UFP-V) RID, ORCID
Cikhardt, Jakub (UFP-V) ORCID
Sedmidubsky, V. (CH)Number of authors 9 Article number 17013 Source Title Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322
Roč. 12, č. 1 (2022)Number of pages 12 s. Language eng - English Country DE - Germany Keywords plasma ; tokamak ; heat pulses Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects EF16_019/0000768 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018117 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA22-03950S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UFP-V - RVO:61389021 UT WOS 000866180700032 EID SCOPUS 85139625881 DOI 10.1038/s41598-022-18748-x Annotation One of the remaining challenges in magnetic thermonuclear fusion is survival of the heat shield protecting the tokamak reactor vessel against excessive plasma heat fluxes. Unmitigated high confinement edge localized mode (ELM) is a regular heat pulse damaging the heat shield. We suggest a novel concept of magnetic sweeping of the plasma contact strike point fast and far enough in order to spread this heat pulse. We demonstrate feasibility of a dedicated copper coil in a resonant circuit, including the induced currents and power electronics. We predict the DEMO ELM properties, simulate heat conduction, 3D particles motion and magnetic fields of the plasma and coil in COMSOL Multiphysics and Matlab. The dominant system parameter is voltage, feasible 18 kV yields 1 kHz sweeping frequency, suppressing the ELM-induced surface temperature rise by a factor of 3. Multiplied by other known mitigation concepts, ELMs might be mitigated enough to ensure safe operation of DEMO. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2023 Electronic address https://www.nature.com/articles/s41598-022-18748-x
Number of the records: 1