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; Seppo Koivuranta; S. Krat; A. Lahtinen; Jari Likonen; G.F. Matthews; M. Mayer; P. Petersson; M. Rubel; JET Contributors

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
, Seppo Koivuranta
, S. Krat
, A. Lahtinen
, Jari Likonen
, G.F. Matthews
, M. Mayer
, P. Petersson
, M. Rubel
, JET Contributors

University of Helsinki
Culham Science Centre
Universidade de Lisboa
Forschungszentrum Jülich GmbH (FZJ)
National Research Nuclear University (MEPhI)
KTH Royal Institute of Technology
Max-Planck-Institut für Plasmaphysik (IPP)

Research output: Contribution to journal › Article › Scientific › peer-review

62 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 language	English
Article number	086045
Journal	Nuclear Fusion
Volume	57
Issue number	8
Early online date	2017
DOIs	https://doi.org/10.1088/1741-4326/aa7475
Publication status	Published - 17 Jul 2017
MoE publication type	A1 Journal article-refereed

Funding

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053 and from the RCUK Energy Programme (grant number EP/P012450/1).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

JET ITER-like wall
fuel retention
material migration

Access to Document

10.1088/1741-4326/aa7475

Cite this

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., & JET Contributors (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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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 Seppo Koivuranta and S. Krat and A. Lahtinen and Jari Likonen and G.F. Matthews and M. Mayer and P. Petersson and M. Rubel and \{JET Contributors\}",

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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 & JET Contributors 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

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T1 - Overview of fuel inventory in JET with the ITER-like wall

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, Seppo

AU - Krat, S.

AU - Lahtinen, A.

AU - Likonen, Jari

AU - Matthews, G.F.

AU - Mayer, M.

AU - Petersson, P.

AU - Rubel, M.

AU - JET Contributors

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.

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KW - material migration

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DO - 10.1088/1741-4326/aa7475

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JO - Nuclear Fusion

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IS - 8

M1 - 086045

ER -

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

Abstract

Funding

UN SDGs

Keywords

Access to Document

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