Material migration patterns and overview of first surface analysis of the JET ITER-like wall
2014 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T159, 014010- p.Article in journal (Refereed) Published
Following the first JET ITER-like wall operations a detailed in situ photographic survey of the main chamber and divertor was completed. In addition, a selection of tiles and passive diagnostics were removed from the vessel and made available for post mortem analysis. From the photographic survey and results from initial analysis, the first conclusions regarding erosion, deposition, fuel retention and material transport during divertor and limiter phases have been drawn. The rate of deposition on inner and outer base divertor tiles and remote divertor corners was more than an order of magnitude less than during the preceding carbon wall operations, as was the concomitant deuterium retention. There was however beryllium deposition at the top of the inner divertor. The net beryllium erosion rate from the mid-plane inner limiters was found to be higher than for the previous carbon wall campaign although further analysis is required to determine the overall material balance due to erosion and re-deposition.
Place, publisher, year, edition, pages
2014. Vol. T159, 014010- p.
plasma-material interaction, tokamaks, ion beam analysis
IdentifiersURN: urn:nbn:se:kth:diva-145774DOI: 10.1088/0031-8949/2014/T159/014010ISI: 000334847800011ScopusID: 2-s2.0-84902199366OAI: oai:DiVA.org:kth-145774DiVA: diva2:721372
QC 201406042014-06-042014-06-022014-06-04Bibliographically approved