Comparison of JET main chamber erosion with dust collected in the divertor

A. Widdowson (Corresponding Author), C.F. Ayres, S. Booth, Paul Coad, Antti Hakola, K. Heinola, D. Ivanova, Seppo Koivuranta, Jari Likonen, M. Mayer, M. Stamp, JET-EFDA collaborators

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    Abstract

    A complete global balance for carbon in JET requires knowledge of the net erosion in the main chamber, net deposition in the divertor and the amount of dust and flakes collecting in the divertor region. This paper describes a number of measurements on aspects of this global picture. Profiler measurements and cross section microscopy on tiles that were removed in the 2009 JET intervention are used to evaluate the net erosion in the main chamber and net deposition in the divertor. In addition the mass of dust and flakes collected from the JET divertor during the same intervention is also reported and included as part of the balance. Spectroscopic measurements of carbon erosion from the main chamber are presented and compared with the erosion measurements for the main chamber.
    Original languageEnglish
    Pages (from-to)S827-S832
    Number of pages6
    JournalJournal of Nuclear Materials
    Volume438
    Issue numberSupplement
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed
    Event20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany
    Duration: 21 May 201225 May 2012

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    Widdowson, A., Ayres, C. F., Booth, S., Coad, P., Hakola, A., Heinola, K., Ivanova, D., Koivuranta, S., Likonen, J., Mayer, M., Stamp, M., & JET-EFDA collaborators (2013). Comparison of JET main chamber erosion with dust collected in the divertor. Journal of Nuclear Materials, 438(Supplement), S827-S832. https://doi.org/10.1016/j.jnucmat.2013.01.179