Primary and secondary metallic PFC damage induced by runaway electron dissipation in FTUShow others and affiliations
2026 (English)In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 46, article id 102089Article in journal (Refereed) Published
Abstract [en]
Runaway electron (RE) interaction with plasma-facing components (PFCs) has been documented to lead to deep volumetric melting and thermal shock driven material explosions followed by extensive wall cratering. This work reports a post-mortem FTU investigation that covers the primary localized RE-induced damage directly caused by beams striking poloidal or toroidal molybdenum (Mo)-based limiters and the subsequent secondary non-localized RE-induced damage inflicted on nearby limiter tiles by the mechanical impact of fast up to similar to 1 km/s solid debris violently ejected during the direct RE-PFC interaction. Early indications on the resilience of tin liquid limiters to RE incidence are also presented.
Place, publisher, year, edition, pages
Elsevier BV , 2026. Vol. 46, article id 102089
Keywords [en]
Runaway electron impact, Dust in tokamaks, PFC damage, High velocity impacts, Liquid metal limiter
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-379538DOI: 10.1016/j.nme.2026.102089ISI: 001702917500001Scopus ID: 2-s2.0-105034860528OAI: oai:DiVA.org:kth-379538DiVA, id: diva2:2054320
Note
QC 20260420
2026-04-202026-04-202026-04-20Bibliographically approved