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Deposition results from rotating collector diagnostics in JET
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0001-9901-6296
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2009 (English)In: Physica scripta. T, ISSN 0281-1847, Vol. T138, 014023- p.Article in journal (Refereed) Published
Abstract [en]

Rotating collectors (RC) were installed in JET during the period 2005-2007, each providing a time-resolved deposition pattern on the surface of a rotating silicon disc, which could be analysed once retrieved from the vessel. This paper reports results from the silicon disc removed from the RC located under the load-bearing septum replacement plate in JET in 2007. Nuclear reaction analysis results of the deposits on the disc have been correlated directly with the pattern of erosion and deposition observed by the quartz microbalance (QMB) located in an equivalent position. The thickest film in the time-resolved region (i.e. deposited in similar to 60 pulses) was similar to 250 nm, and the Be/C ratio was generally found to be 0.1 or lower, with two regions where the ratio rose to 0.2. The deposition observed with the QMB appears to be about a factor of four less.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2009. Vol. T138, 014023- p.
Keyword [en]
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Physical Sciences
URN: urn:nbn:se:kth:diva-25574DOI: 10.1088/0031-8949/2009/T138/014023ISI: 000273199200024ScopusID: 2-s2.0-77953890455OAI: diva2:371164
12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications Julich, GERMANY, MAY, 2009
QC 20101119Available from: 2012-01-26 Created: 2010-10-27 Last updated: 2012-02-22Bibliographically approved

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