Overview of JET post-mortem results following the 2007–9 operational period, and comparisons with previous campaigns
| Autor: | Seppo Koivuranta, Marek Rubel, Anna Widdowson, S Gruenhagen, J.P. Coad, Jari Likonen, Antti Hakola, Jet-Efda Contributors, D.E. Hole |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Coad, J P, Gruenhagen, S, Hole, D E, Hakola, A, Koivuranta, S, Likonen, J, Rubel, M, Widdowson, A & JET-EFDA contributors 2011, ' Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns ', Physica Scripta, vol. 2011, no. T145, 014003 . https://doi.org/10.1088/0031-8949/2011/T145/014003, https://doi.org/10.1088/0031-8949/2011/T145/014003 |
| ISSN: | 1402-4896 0031-8949 |
| Popis: | In 2010, all the plasma-facing components were removed from JET so that the carbon-based surfaces could be replaced with beryllium (Be) or tungsten as part of the ITER-like wall (ILW) project. This gives unprecedented opportunities for post-mortem analyses of these plasma-facing surfaces; this paper reviews the data obtained so far and relates the information to studies of tiles removed during previous JET shutdowns. The general pattern of erosion/deposition at the JET divertor has been maintained, with deposition of impurities in the scrape-off layer (SOL) at the inner divertor and preferential removal of carbon and transport into the corner. However, the remaining films in the SOL contain very high Be/C ratios at the surface. The first measurements of erosion using a tile profiler have been completed, with up to 200 microns erosion being recorded at points on the inner wall guard limiters. |
| Databáze: | OpenAIRE |
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