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Study of runaway electron transport with the fractional diffusion model and comparison with experiments on COMPASS
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SYSNO ASEP 0524604 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Study of runaway electron transport with the fractional diffusion model and comparison with experiments on COMPASS Author(s) Casolari, Andrea (UFP-V)
Tomešová, Eva (UFP-V) ORCID
Čeřovský, J. (CZ)
Farník, M. (CZ)
Ficker, O. (CZ)
Mlynář, Jan (UFP-V) RID
Gobbin, M. (IT)Number of authors 7 Article number P5.1068 Source Title Europhysics Conference Abstracts. - Milán : European Physical Society, 2019 - ISBN 979-10-96389-11-7 Number of pages 4 s. Publication form Online - E Action 46th European Physical Society Conference on Plasma Physics Event date 08.07.2019 - 12.07.2019 VEvent location Milán Country IT - Italy Event type EUR Language eng - English Country IT - Italy Keywords fractional diffusion model ; runaway electron ; COMPASS Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects GA18-02482S GA ČR - Czech Science Foundation (CSF) 8D15001 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015045 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 EID SCOPUS 85084018106 Annotation Large toroidal electric fields following a disruption event are capable of accelerating a largefraction of the electrons to relativistic energies - these energetic electrons are called ,,runawayelectrons” (REs). REs can be trapped inside non-axisymmetric flux tubes, rapidly reformingafter the thermal quench phase of the disruption. RE dynamics and transport is affected bythe presence of magnetic perturbations, either caused by internal MHD activity or externallygenerated Resonant Magnetic Perturbations (RMPs). The evidence of a coupled dynamics ofREs and magnetic islands has been observed in the correlation between the Hard X Ray (HXR)signals, and the magnetic signals obtained by Mirnov pick-up coils. The presence of partiallybroken magnetic surfaces and chains of magnetic islands makes the usual diffusive approachinadequate to the study of transport, and the fractional diffusion model should be used instead. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2021 Electronic address http://ocs.ciemat.es/EPS2019PAP/pdf/P5.1068.pdf
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