Material migration patterns and overview of first surface analysis of the JET ITER-like wall

A A Widdowson (Corresponding Author), E. Alves, C.F. Ayres, A. Baron-Wiechec, S. Brezinsek, N. Catarino, J.P. Coad, K. Heinola, Jari Likonen, G.F. Matthews, M. Rubel, JET-EFDA contributors

    Research output: Contribution to journalArticleScientificpeer-review

    48 Citations (Scopus)

    Abstract

    Following the first JET ITER-like wall operations a detailed in situ photographic survey of the main chamber and divertor was completed. In addition, a selection of tiles and passive diagnostics were removed from the vessel and made available for post mortem analysis. From the photographic survey and results from initial analysis, the first conclusions regarding erosion, deposition, fuel retention and material transport during divertor and limiter phases have been drawn. The rate of deposition on inner and outer base divertor tiles and remote divertor corners was more than an order of magnitude less than during the preceding carbon wall operations, as was the concomitant deuterium retention. There was however beryllium deposition at the top of the inner divertor. The net beryllium erosion rate from the mid-plane inner limiters was found to be higher than for the previous carbon wall campaign although further analysis is required to determine the overall material balance due to erosion and re-deposition.
    Original languageEnglish
    Article number014010
    Number of pages9
    JournalPhysica Scripta
    Volume2014
    Issue numberT159
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Migration
    Erosion
    Limiter
    erosion
    Tile
    tiles
    Carbon
    beryllium
    material balance
    Vessel
    carbon
    Diagnostics
    vessels
    deuterium
    chambers

    Cite this

    A Widdowson, A., Alves, E., Ayres, C. F., Baron-Wiechec, A., Brezinsek, S., Catarino, N., ... contributors, JET-EFDA. (2014). Material migration patterns and overview of first surface analysis of the JET ITER-like wall. Physica Scripta, 2014(T159), [014010]. https://doi.org/10.1088/0031-8949/2014/T159/014010
    A Widdowson, A ; Alves, E. ; Ayres, C.F. ; Baron-Wiechec, A. ; Brezinsek, S. ; Catarino, N. ; Coad, J.P. ; Heinola, K. ; Likonen, Jari ; Matthews, G.F. ; Rubel, M. ; contributors, JET-EFDA. / Material migration patterns and overview of first surface analysis of the JET ITER-like wall. In: Physica Scripta. 2014 ; Vol. 2014, No. T159.
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    title = "Material migration patterns and overview of first surface analysis of the JET ITER-like wall",
    abstract = "Following the first JET ITER-like wall operations a detailed in situ photographic survey of the main chamber and divertor was completed. In addition, a selection of tiles and passive diagnostics were removed from the vessel and made available for post mortem analysis. From the photographic survey and results from initial analysis, the first conclusions regarding erosion, deposition, fuel retention and material transport during divertor and limiter phases have been drawn. The rate of deposition on inner and outer base divertor tiles and remote divertor corners was more than an order of magnitude less than during the preceding carbon wall operations, as was the concomitant deuterium retention. There was however beryllium deposition at the top of the inner divertor. The net beryllium erosion rate from the mid-plane inner limiters was found to be higher than for the previous carbon wall campaign although further analysis is required to determine the overall material balance due to erosion and re-deposition.",
    author = "{A Widdowson}, A and E. Alves and C.F. Ayres and A. Baron-Wiechec and S. Brezinsek and N. Catarino and J.P. Coad and K. Heinola and Jari Likonen and G.F. Matthews and M. Rubel and JET-EFDA contributors",
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    A Widdowson, A, Alves, E, Ayres, CF, Baron-Wiechec, A, Brezinsek, S, Catarino, N, Coad, JP, Heinola, K, Likonen, J, Matthews, GF, Rubel, M & contributors, JET-EFDA 2014, 'Material migration patterns and overview of first surface analysis of the JET ITER-like wall', Physica Scripta, vol. 2014, no. T159, 014010. https://doi.org/10.1088/0031-8949/2014/T159/014010

    Material migration patterns and overview of first surface analysis of the JET ITER-like wall. / A Widdowson, A (Corresponding Author); Alves, E.; Ayres, C.F.; Baron-Wiechec, A.; Brezinsek, S.; Catarino, N.; Coad, J.P.; Heinola, K.; Likonen, Jari; Matthews, G.F.; Rubel, M.; contributors, JET-EFDA.

    In: Physica Scripta, Vol. 2014, No. T159, 014010, 2014.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Material migration patterns and overview of first surface analysis of the JET ITER-like wall

    AU - A Widdowson, A

    AU - Alves, E.

    AU - Ayres, C.F.

    AU - Baron-Wiechec, A.

    AU - Brezinsek, S.

    AU - Catarino, N.

    AU - Coad, J.P.

    AU - Heinola, K.

    AU - Likonen, Jari

    AU - Matthews, G.F.

    AU - Rubel, M.

    AU - contributors, JET-EFDA

    PY - 2014

    Y1 - 2014

    N2 - Following the first JET ITER-like wall operations a detailed in situ photographic survey of the main chamber and divertor was completed. In addition, a selection of tiles and passive diagnostics were removed from the vessel and made available for post mortem analysis. From the photographic survey and results from initial analysis, the first conclusions regarding erosion, deposition, fuel retention and material transport during divertor and limiter phases have been drawn. The rate of deposition on inner and outer base divertor tiles and remote divertor corners was more than an order of magnitude less than during the preceding carbon wall operations, as was the concomitant deuterium retention. There was however beryllium deposition at the top of the inner divertor. The net beryllium erosion rate from the mid-plane inner limiters was found to be higher than for the previous carbon wall campaign although further analysis is required to determine the overall material balance due to erosion and re-deposition.

    AB - Following the first JET ITER-like wall operations a detailed in situ photographic survey of the main chamber and divertor was completed. In addition, a selection of tiles and passive diagnostics were removed from the vessel and made available for post mortem analysis. From the photographic survey and results from initial analysis, the first conclusions regarding erosion, deposition, fuel retention and material transport during divertor and limiter phases have been drawn. The rate of deposition on inner and outer base divertor tiles and remote divertor corners was more than an order of magnitude less than during the preceding carbon wall operations, as was the concomitant deuterium retention. There was however beryllium deposition at the top of the inner divertor. The net beryllium erosion rate from the mid-plane inner limiters was found to be higher than for the previous carbon wall campaign although further analysis is required to determine the overall material balance due to erosion and re-deposition.

    U2 - 10.1088/0031-8949/2014/T159/014010

    DO - 10.1088/0031-8949/2014/T159/014010

    M3 - Article

    VL - 2014

    JO - Physica Scripta

    JF - Physica Scripta

    SN - 0031-8949

    IS - T159

    M1 - 014010

    ER -

    A Widdowson A, Alves E, Ayres CF, Baron-Wiechec A, Brezinsek S, Catarino N et al. Material migration patterns and overview of first surface analysis of the JET ITER-like wall. Physica Scripta. 2014;2014(T159). 014010. https://doi.org/10.1088/0031-8949/2014/T159/014010