Overview of fuel inventory in JET with the ITER-like wall

A. Widdowson, J.P. Coad, E. Alves, A. Baron-Wiechec, N.P. Barradas, S. Brezinsek, N. Catarino, V. Corregidor, K. Heinola, S. Koivuranta, S. Krat, A. Lahtinen, J. Likonen, G.F. Matthews, M. Mayer, P. Petersson, M. Rubel

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)

    Abstract

    Post mortem analyses of JET ITER-Like-Wall tiles and passive diagnostics have been completed after each of the first two campaigns (ILW-1 and ILW-2). They show that the global fuel inventory is still dominated by co-deposition; hence plasma parameters and sputtering processes affecting material migration influence the distribution of retained fuel. In particular, differences between results from the two campaigns may be attributed to a greater proportion of pulses run with strike points in the divertor corners, and having about 300 discharges in hydrogen at the end of ILW-2. Recessed and remote areas can contribute to fuel retention due to the larger areas involved, e.g. recessed main chamber walls, gaps in castellated Be main chamber tiles and material migration to remote divertor areas. The fuel retention and material migration due to the bulk W Tile 5 during ILW-1 are presented. Overall these tiles account for only a small percentage of the global accountancy for ILW-1.
    Original languageEnglish
    Article number086045
    JournalNuclear Fusion
    Volume57
    Issue number8
    Early online date2017
    DOIs
    Publication statusPublished - 17 Jul 2017
    MoE publication typeA1 Journal article-refereed

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    tiles
    chambers
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    sputtering
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    pulses

    Keywords

    • JET ITER-like wall
    • fuel retention
    • material migration

    Cite this

    Widdowson, A., Coad, J. P., Alves, E., Baron-Wiechec, A., Barradas, N. P., Brezinsek, S., ... Rubel, M. (2017). Overview of fuel inventory in JET with the ITER-like wall. Nuclear Fusion, 57(8), [086045]. https://doi.org/10.1088/1741-4326/aa7475
    Widdowson, A. ; Coad, J.P. ; Alves, E. ; Baron-Wiechec, A. ; Barradas, N.P. ; Brezinsek, S. ; Catarino, N. ; Corregidor, V. ; Heinola, K. ; Koivuranta, S. ; Krat, S. ; Lahtinen, A. ; Likonen, J. ; Matthews, G.F. ; Mayer, M. ; Petersson, P. ; Rubel, M. / Overview of fuel inventory in JET with the ITER-like wall. In: Nuclear Fusion. 2017 ; Vol. 57, No. 8.
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    abstract = "Post mortem analyses of JET ITER-Like-Wall tiles and passive diagnostics have been completed after each of the first two campaigns (ILW-1 and ILW-2). They show that the global fuel inventory is still dominated by co-deposition; hence plasma parameters and sputtering processes affecting material migration influence the distribution of retained fuel. In particular, differences between results from the two campaigns may be attributed to a greater proportion of pulses run with strike points in the divertor corners, and having about 300 discharges in hydrogen at the end of ILW-2. Recessed and remote areas can contribute to fuel retention due to the larger areas involved, e.g. recessed main chamber walls, gaps in castellated Be main chamber tiles and material migration to remote divertor areas. The fuel retention and material migration due to the bulk W Tile 5 during ILW-1 are presented. Overall these tiles account for only a small percentage of the global accountancy for ILW-1.",
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    author = "A. Widdowson and J.P. Coad and E. Alves and A. Baron-Wiechec and N.P. Barradas and S. Brezinsek and N. Catarino and V. Corregidor and K. Heinola and S. Koivuranta and S. Krat and A. Lahtinen and J. Likonen and G.F. Matthews and M. Mayer and P. Petersson and M. Rubel",
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    Widdowson, A, Coad, JP, Alves, E, Baron-Wiechec, A, Barradas, NP, Brezinsek, S, Catarino, N, Corregidor, V, Heinola, K, Koivuranta, S, Krat, S, Lahtinen, A, Likonen, J, Matthews, GF, Mayer, M, Petersson, P & Rubel, M 2017, 'Overview of fuel inventory in JET with the ITER-like wall', Nuclear Fusion, vol. 57, no. 8, 086045. https://doi.org/10.1088/1741-4326/aa7475

    Overview of fuel inventory in JET with the ITER-like wall. / Widdowson, A.; Coad, J.P.; Alves, E.; Baron-Wiechec, A.; Barradas, N.P.; Brezinsek, S.; Catarino, N.; Corregidor, V.; Heinola, K.; Koivuranta, S.; Krat, S.; Lahtinen, A.; Likonen, J.; Matthews, G.F.; Mayer, M.; Petersson, P.; Rubel, M.

    In: Nuclear Fusion, Vol. 57, No. 8, 086045, 17.07.2017.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

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    AU - Widdowson, A.

    AU - Coad, J.P.

    AU - Alves, E.

    AU - Baron-Wiechec, A.

    AU - Barradas, N.P.

    AU - Brezinsek, S.

    AU - Catarino, N.

    AU - Corregidor, V.

    AU - Heinola, K.

    AU - Koivuranta, S.

    AU - Krat, S.

    AU - Lahtinen, A.

    AU - Likonen, J.

    AU - Matthews, G.F.

    AU - Mayer, M.

    AU - Petersson, P.

    AU - Rubel, M.

    PY - 2017/7/17

    Y1 - 2017/7/17

    N2 - Post mortem analyses of JET ITER-Like-Wall tiles and passive diagnostics have been completed after each of the first two campaigns (ILW-1 and ILW-2). They show that the global fuel inventory is still dominated by co-deposition; hence plasma parameters and sputtering processes affecting material migration influence the distribution of retained fuel. In particular, differences between results from the two campaigns may be attributed to a greater proportion of pulses run with strike points in the divertor corners, and having about 300 discharges in hydrogen at the end of ILW-2. Recessed and remote areas can contribute to fuel retention due to the larger areas involved, e.g. recessed main chamber walls, gaps in castellated Be main chamber tiles and material migration to remote divertor areas. The fuel retention and material migration due to the bulk W Tile 5 during ILW-1 are presented. Overall these tiles account for only a small percentage of the global accountancy for ILW-1.

    AB - Post mortem analyses of JET ITER-Like-Wall tiles and passive diagnostics have been completed after each of the first two campaigns (ILW-1 and ILW-2). They show that the global fuel inventory is still dominated by co-deposition; hence plasma parameters and sputtering processes affecting material migration influence the distribution of retained fuel. In particular, differences between results from the two campaigns may be attributed to a greater proportion of pulses run with strike points in the divertor corners, and having about 300 discharges in hydrogen at the end of ILW-2. Recessed and remote areas can contribute to fuel retention due to the larger areas involved, e.g. recessed main chamber walls, gaps in castellated Be main chamber tiles and material migration to remote divertor areas. The fuel retention and material migration due to the bulk W Tile 5 during ILW-1 are presented. Overall these tiles account for only a small percentage of the global accountancy for ILW-1.

    KW - JET ITER-like wall

    KW - fuel retention

    KW - material migration

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    U2 - 10.1088/1741-4326/aa7475

    DO - 10.1088/1741-4326/aa7475

    M3 - Article

    VL - 57

    JO - Nuclear Fusion

    JF - Nuclear Fusion

    SN - 0029-5515

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    ER -

    Widdowson A, Coad JP, Alves E, Baron-Wiechec A, Barradas NP, Brezinsek S et al. Overview of fuel inventory in JET with the ITER-like wall. Nuclear Fusion. 2017 Jul 17;57(8). 086045. https://doi.org/10.1088/1741-4326/aa7475