Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

M. Mayer (Corresponding Author), V. Rohde, Jari Likonen, Elizaveta Vainonen-Ahlgren, K. Krieger, X. Gong, J. Chen, ASDEX Upgrade Team

    Research output: Contribution to journalArticleScientificpeer-review

    32 Citations (Scopus)

    Abstract

    Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.
    Original languageEnglish
    Pages (from-to)119 - 123
    Number of pages5
    JournalJournal of Nuclear Materials
    Volume337-339
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    tiles
    Tile
    erosion
    Erosion
    Carbon
    baffles
    carbon
    roofs
    Roofs
    Hydrocarbons
    vessels
    hydrocarbons
    chambers
    Molecules
    molecules

    Keywords

    • ASDEX upgrade
    • divertor
    • co-deposition
    • divertor material
    • erosion
    • deposition
    • impurity transport
    • ITER
    • JET
    • fusion energy

    Cite this

    Mayer, M., Rohde, V., Likonen, J., Vainonen-Ahlgren, E., Krieger, K., Gong, X., ... ASDEX Upgrade Team (2005). Carbon erosion and deposition on the ASDEX Upgrade divertor tiles. Journal of Nuclear Materials, 337-339, 119 - 123. https://doi.org/10.1016/j.jnucmat.2004.10.046
    Mayer, M. ; Rohde, V. ; Likonen, Jari ; Vainonen-Ahlgren, Elizaveta ; Krieger, K. ; Gong, X. ; Chen, J. ; ASDEX Upgrade Team. / Carbon erosion and deposition on the ASDEX Upgrade divertor tiles. In: Journal of Nuclear Materials. 2005 ; Vol. 337-339. pp. 119 - 123.
    @article{79bc9954f02e413090a2b5087dc1a1cb,
    title = "Carbon erosion and deposition on the ASDEX Upgrade divertor tiles",
    abstract = "Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88{\%} were deposited on tiles and 9{\%} in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.",
    keywords = "ASDEX upgrade, divertor, co-deposition, divertor material, erosion, deposition, impurity transport, ITER, JET, fusion energy",
    author = "M. Mayer and V. Rohde and Jari Likonen and Elizaveta Vainonen-Ahlgren and K. Krieger and X. Gong and J. Chen and {ASDEX Upgrade Team}",
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    doi = "10.1016/j.jnucmat.2004.10.046",
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    Mayer, M, Rohde, V, Likonen, J, Vainonen-Ahlgren, E, Krieger, K, Gong, X, Chen, J & ASDEX Upgrade Team 2005, 'Carbon erosion and deposition on the ASDEX Upgrade divertor tiles', Journal of Nuclear Materials, vol. 337-339, pp. 119 - 123. https://doi.org/10.1016/j.jnucmat.2004.10.046

    Carbon erosion and deposition on the ASDEX Upgrade divertor tiles. / Mayer, M. (Corresponding Author); Rohde, V.; Likonen, Jari; Vainonen-Ahlgren, Elizaveta; Krieger, K.; Gong, X.; Chen, J.; ASDEX Upgrade Team.

    In: Journal of Nuclear Materials, Vol. 337-339, 2005, p. 119 - 123.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

    AU - Mayer, M.

    AU - Rohde, V.

    AU - Likonen, Jari

    AU - Vainonen-Ahlgren, Elizaveta

    AU - Krieger, K.

    AU - Gong, X.

    AU - Chen, J.

    AU - ASDEX Upgrade Team, null

    PY - 2005

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    N2 - Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.

    AB - Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.

    KW - ASDEX upgrade

    KW - divertor

    KW - co-deposition

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    KW - deposition

    KW - impurity transport

    KW - ITER

    KW - JET

    KW - fusion energy

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    DO - 10.1016/j.jnucmat.2004.10.046

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    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

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