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

doi:10.1088/1741-4326/aa7475

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

^*Corresponding author for this work

Research output: Contribution to journal › Review article › peer-review

51 Scopus citations

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 language	English
Article number	086045
Journal	Nuclear Fusion
Volume	57
Issue number	8
DOIs	https://doi.org/10.1088/1741-4326/aa7475
State	Published - 17 Jul 2017
Externally published	Yes

Keywords

JET ITER-like wall
fuel retention
material migration

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10.1088/1741-4326/aa7475

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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. (2017). Overview of fuel inventory in JET with the ITER-like wall. Nuclear Fusion, 57(8), Article 086045. https://doi.org/10.1088/1741-4326/aa7475

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author = "A. Widdowson and Coad, {J. P.} and E. Alves and A. Baron-Wiechec and Barradas, {N. P.} 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 Matthews, {G. F.} and M. Mayer and P. Petersson and M. Rubel",

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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

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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

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JO - Nuclear Fusion

JF - Nuclear Fusion

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

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Keywords

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