Experience on divertor fuel retention after two ITER-Like Wall campaigns

K. Heinola (Corresponding Author), A. Widdowson, J. Likonen, T. Ahlgren, E. Alves, C.F. Ayres, A. Baron-Wiechec, N. Barradas, S. Brezinsek, N. Catarino, P. Coad, C. Guillemaut, I. Jepu, S. Krat, A. Lahtinen, G.F. Matthews, M. Mayer

    Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

    14 Citations (Scopus)

    Abstract

    The JET ITER-Like Wall experiment, with its all-metal plasma-facing components, provides a unique environment for plasma and plasma-wall interaction studies. These studies are of great importance in understanding the underlying phenomena taking place during the operation of a future fusion reactor. Present work summarizes and reports the plasma fuel retention in the divertor resulting from the two first experimental campaigns with the ITER-Like Wall. The deposition pattern in the divertor after the second campaign shows same trend as was observed after the first campaign: highest deposition of 10-15 μm was found on the top part of the inner divertor. Due to the change in plasma magnetic configurations from the first to the second campaign, and the resulted strike point locations, an increase of deposition was observed on the base of the divertor. The deuterium retention was found to be affected by the hydrogen plasma experiments done at the end of second experimental campaign.

    Original languageEnglish
    Number of pages8
    JournalPhysica Scripta
    Issue numberT170
    DOIs
    Publication statusPublished - 2017
    MoE publication typeA4 Article in a conference publication

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    Keywords

    • fusion reactor materials
    • fusion products effects
    • plasma-based ion implantations and deposition
    • fuel retention
    • deposition

    Cite this

    Heinola, K., Widdowson, A., Likonen, J., Ahlgren, T., Alves, E., Ayres, C. F., Baron-Wiechec, A., Barradas, N., Brezinsek, S., Catarino, N., Coad, P., Guillemaut, C., Jepu, I., Krat, S., Lahtinen, A., Matthews, G. F., & Mayer, M. (2017). Experience on divertor fuel retention after two ITER-Like Wall campaigns. Physica Scripta, (T170). https://doi.org/10.1088/1402-4896/aa9283