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Predictive ASCOT modelling of 10Be transport in JET with the ITER-like wall
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. (Association EURATOM-VR)
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2013 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 438, no Suppl., S612-S615 p.Article in journal (Refereed) Published
Abstract [en]

We model the transport of a beryllium (10Be) marker during a sequence of an inner-wall limited and a diverted Ohmic plasma phase in JET with the objective of identifying principal migration pathways. The 3D orbit-following code ASCOT is used for predictive analysis of an experiment during the 2011-2012 campaign on JET where three central pieces of a wall tile enriched with 10Be were installed to an inner wall guard limiter (IWGL) of the tokamak. Assuming erosion during the inner-wall limited plasma, the simulations indicate that 10Be is deposited along the IWGLs during the limiter phase which, when assuming further erosion, can lead to high deposition on the inner (high-field side) divertor during the diverted phase. In contrast, beryllium confined in the core plasma during the limiter phase is seen to be predominantly uniformly deposited during the diverted phase on the outer (low-field side) wall limiters and divertor tiles.

Place, publisher, year, edition, pages
2013. Vol. 438, no Suppl., S612-S615 p.
Keyword [en]
Divertor tiles, Guard limiters, High-field sides, Inner walls, Low-field sides, Migration pathway, Ohmic plasmas, Predictive analysis, Beryllium, Erosion, Magnetoplasma, Tokamak devices
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-140100DOI: 10.1016/j.jnucmat.2013.01.128ISI: 000330795300127ScopusID: 2-s2.0-84885472726OAI: diva2:688592
20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), Forschungszentrum Julich, Aachen, Germany, May 21-25, 2012

QC 20140310

Available from: 2014-01-17 Created: 2014-01-17 Last updated: 2014-03-10Bibliographically approved

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Bergsåker, Henric
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