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

10 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
proportion
sputtering
hydrogen
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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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

IS - 8

M1 - 086045

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