Carbon balance and deuterium inventory from a carbon dominated to a full tungsten ASDEX Upgrade

M. Mayer (Corresponding Author), V. Rohde, K. Sugiyama, J. L. Chen, X. Gong, C. Hopf, Jari Likonen, S. Lindig, R. Neu, G. Ramos, E. Vainonen-Ahlgren, A. Wiltner, ASDEX Upgrade Team

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    Abstract

    The evolution of carbon/boron deposition and the deuterium inventory were determined during the transition from a carbon dominated to a full tungsten ASDEX Upgrade. In the carbon dominated machine about 17 g of carbon were deposited at the inner divertor and in remote areas during one standard discharge campaign. Main carbon sources were the ICRH antennae protection limiters in the main chamber. After coating these limiters with tungsten the carbon deposition decreased to 3–5 g. The remaining carbon originated mainly from erosion at the outer divertor strike point. Transition to a full tungsten machine resulted in a further decrease of the carbon deposition to about 1 g. 1.3–1.7 g deuterium was trapped in codeposited carbon/boron layers in the divertor and in remote areas during the carbon dominated campaigns. The deuterium inventory decreased to 0.16–0.24 g in the full tungsten machine.
    Original languageEnglish
    Pages (from-to)538-543
    Number of pages6
    JournalJournal of Nuclear Materials
    Volume390-391
    DOIs
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed
    Event18th International Conference on Plasma-Surface Interactions in Controlled Fusion Device, 26-30 May 2008, Toledo, Spain -
    Duration: 1 Jan 2009 → …

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  • Cite this

    Mayer, M., Rohde, V., Sugiyama, K., Chen, J. L., Gong, X., Hopf, C., Likonen, J., Lindig, S., Neu, R., Ramos, G., Vainonen-Ahlgren, E., Wiltner, A., & Team, ASDEX. U. (2009). Carbon balance and deuterium inventory from a carbon dominated to a full tungsten ASDEX Upgrade. Journal of Nuclear Materials, 390-391, 538-543. https://doi.org/10.1016/j.jnucmat.2009.01.087