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Erosion at the inner wall of JET during the discharge campaign 2013-2014
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
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2017 (English)In: NUCLEAR MATERIALS AND ENERGY, ISSN 2352-1791, Vol. 11, 20-24 p.Article in journal (Refereed) Published
Abstract [en]

The erosion of Be and W marker layers was investigated using long-term samples containing marker layers during the second ITER-like wall discharge campaign 2013-2014 (ILW-2). The samples were mounted in Be coated Inconel tiles between the inner wall guard limiters (IWGL). They were analyzed using elastic backscattering (EBS) before and after exposure. All samples showed noticeable erosion. The results were compared to the data for Be and W erosion rates for the first 2011-2012 JET ITER-like wall (ILW-1) campaign, and to the data for C erosion during the 2005-2009 campaign when JET was operated with a carbon wall. The mean W erosion rates and the toroidal and poloidal distributions of the W erosion were nearly the same for the ILW-1 and ILW-2 campaigns. The mean erosion rate of Be during the ILW-2 campaign was smaller by a factor of about two compared to the ILW-1 campaign.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 11, 20-24 p.
National Category
Fusion, Plasma and Space Physics
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URN: urn:nbn:se:kth:diva-211621DOI: 10.1016/j.nme.2017.02.026ISI: 000405555100004Scopus ID: 2-s2.0-85016637440OAI: oai:DiVA.org:kth-211621DiVA: diva2:1130653
Note

QC 20170810

Available from: 2017-08-10 Created: 2017-08-10 Last updated: 2017-08-10Bibliographically approved

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Bykov, Igor

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