Beryllium accumulation at the inner divertor of JET

Jari Likonen (Corresponding Author), Elizaveta Vainonen-Ahlgren, J.P. Coad, Riitta Zilliacus, Tommi Renvall, D.E. Hole, M. Rubel, K. Arstila, G.F. Matthews, M. Stamp, JET-EFDA Contributors

    Research output: Contribution to journalArticleScientificpeer-review

    25 Citations (Scopus)

    Abstract

    MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.
    Original languageEnglish
    Pages (from-to)60 - 64
    Number of pages5
    JournalJournal of Nuclear Materials
    Volume337-339
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Beryllium
    Tile
    beryllium
    tiles
    Deposition rates
    Carbon
    chambers
    carbon
    spectroscopy
    Optical spectroscopy

    Keywords

    • divertor
    • beryllium
    • carbon based materials
    • surface analysis
    • JET
    • fusion energy
    • plasma
    • ITER

    Cite this

    Likonen, J., Vainonen-Ahlgren, E., Coad, J. P., Zilliacus, R., Renvall, T., Hole, D. E., ... JET-EFDA Contributors (2005). Beryllium accumulation at the inner divertor of JET. Journal of Nuclear Materials, 337-339, 60 - 64. https://doi.org/10.1016/j.jnucmat.2004.10.151
    Likonen, Jari ; Vainonen-Ahlgren, Elizaveta ; Coad, J.P. ; Zilliacus, Riitta ; Renvall, Tommi ; Hole, D.E. ; Rubel, M. ; Arstila, K. ; Matthews, G.F. ; Stamp, M. ; JET-EFDA Contributors. / Beryllium accumulation at the inner divertor of JET. In: Journal of Nuclear Materials. 2005 ; Vol. 337-339. pp. 60 - 64.
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    abstract = "MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.",
    keywords = "divertor, beryllium, carbon based materials, surface analysis, JET, fusion energy, plasma, ITER",
    author = "Jari Likonen and Elizaveta Vainonen-Ahlgren and J.P. Coad and Riitta Zilliacus and Tommi Renvall and D.E. Hole and M. Rubel and K. Arstila and G.F. Matthews and M. Stamp and {JET-EFDA Contributors}",
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    Likonen, J, Vainonen-Ahlgren, E, Coad, JP, Zilliacus, R, Renvall, T, Hole, DE, Rubel, M, Arstila, K, Matthews, GF, Stamp, M & JET-EFDA Contributors 2005, 'Beryllium accumulation at the inner divertor of JET', Journal of Nuclear Materials, vol. 337-339, pp. 60 - 64. https://doi.org/10.1016/j.jnucmat.2004.10.151

    Beryllium accumulation at the inner divertor of JET. / Likonen, Jari (Corresponding Author); Vainonen-Ahlgren, Elizaveta; Coad, J.P.; Zilliacus, Riitta; Renvall, Tommi; Hole, D.E.; Rubel, M.; Arstila, K.; Matthews, G.F.; Stamp, M.; JET-EFDA Contributors.

    In: Journal of Nuclear Materials, Vol. 337-339, 2005, p. 60 - 64.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Beryllium accumulation at the inner divertor of JET

    AU - Likonen, Jari

    AU - Vainonen-Ahlgren, Elizaveta

    AU - Coad, J.P.

    AU - Zilliacus, Riitta

    AU - Renvall, Tommi

    AU - Hole, D.E.

    AU - Rubel, M.

    AU - Arstila, K.

    AU - Matthews, G.F.

    AU - Stamp, M.

    AU - JET-EFDA Contributors, null

    PY - 2005

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    N2 - MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.

    AB - MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.

    KW - divertor

    KW - beryllium

    KW - carbon based materials

    KW - surface analysis

    KW - JET

    KW - fusion energy

    KW - plasma

    KW - ITER

    U2 - 10.1016/j.jnucmat.2004.10.151

    DO - 10.1016/j.jnucmat.2004.10.151

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    JF - Journal of Nuclear Materials

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    Likonen J, Vainonen-Ahlgren E, Coad JP, Zilliacus R, Renvall T, Hole DE et al. Beryllium accumulation at the inner divertor of JET. Journal of Nuclear Materials. 2005;337-339:60 - 64. https://doi.org/10.1016/j.jnucmat.2004.10.151