Global erosion and deposition patterns in JET with the ITER-like wall

A. Baron-Wiechecc (Corresponding Author), A Widdowson, E. Alves, C.F. Ayres, N.P. Barradas, S. Brezinsek, J.P. Coad, N. Catarino, K. Heinola, J. Likonen, G.F. Matthews, M. Mayer, P. Petersson, M. Rubel, W. van Renterghem, I. Uytdenhouwen, JET EFDA Contributors

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Abstract

A set of Be and Wtiles removed after the first ITER-like wall campaigns (JET-ILW) from 2011 to 2012 has been analysed. The results indicate that the primary erosion site is in the main chamber (Be) as in previous carbon campaigns (JET-C). In particular the limiters tiles near the mid-plane are eroded probably during the limiter phases of discharges. W is found at low concentrations on all plasma-facing surfaces of the vessel indicating deposition via plasma transport initially from the W divertor and from main chamber W-coated tiles; there are also traces of Mo (used as an interlayer for these coatings). Deposited films in the inner divertor have a layered structure, and every layer is dominated by Be with some Wand O content.
Original languageEnglish
Pages (from-to)157-161
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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Limiters
tiles
Tile
erosion
Erosion
chambers
Plasmas
Facings
vessels
low concentrations
interlayers
Carbon
coatings
Coatings
carbon

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Baron-Wiechecc, A., Widdowson, A., Alves, E., Ayres, C. F., Barradas, N. P., Brezinsek, S., ... Contributors, JET. EFDA. (2015). Global erosion and deposition patterns in JET with the ITER-like wall. Journal of Nuclear Materials, 463, 157-161. https://doi.org/10.1016/j.jnucmat.2015.01.038
Baron-Wiechecc, A. ; Widdowson, A ; Alves, E. ; Ayres, C.F. ; Barradas, N.P. ; Brezinsek, S. ; Coad, J.P. ; Catarino, N. ; Heinola, K. ; Likonen, J. ; Matthews, G.F. ; Mayer, M. ; Petersson, P. ; Rubel, M. ; van Renterghem, W. ; Uytdenhouwen, I. ; Contributors, JET EFDA. / Global erosion and deposition patterns in JET with the ITER-like wall. In: Journal of Nuclear Materials. 2015 ; Vol. 463. pp. 157-161.
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title = "Global erosion and deposition patterns in JET with the ITER-like wall",
abstract = "A set of Be and Wtiles removed after the first ITER-like wall campaigns (JET-ILW) from 2011 to 2012 has been analysed. The results indicate that the primary erosion site is in the main chamber (Be) as in previous carbon campaigns (JET-C). In particular the limiters tiles near the mid-plane are eroded probably during the limiter phases of discharges. W is found at low concentrations on all plasma-facing surfaces of the vessel indicating deposition via plasma transport initially from the W divertor and from main chamber W-coated tiles; there are also traces of Mo (used as an interlayer for these coatings). Deposited films in the inner divertor have a layered structure, and every layer is dominated by Be with some Wand O content.",
author = "A. Baron-Wiechecc and A Widdowson and E. Alves and C.F. Ayres and N.P. Barradas and S. Brezinsek and J.P. Coad and N. Catarino and K. Heinola and J. Likonen and G.F. Matthews and M. Mayer and P. Petersson and M. Rubel and {van Renterghem}, W. and I. Uytdenhouwen and Contributors, {JET EFDA}",
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Baron-Wiechecc, A, Widdowson, A, Alves, E, Ayres, CF, Barradas, NP, Brezinsek, S, Coad, JP, Catarino, N, Heinola, K, Likonen, J, Matthews, GF, Mayer, M, Petersson, P, Rubel, M, van Renterghem, W, Uytdenhouwen, I & Contributors, JETEFDA 2015, 'Global erosion and deposition patterns in JET with the ITER-like wall', Journal of Nuclear Materials, vol. 463, pp. 157-161. https://doi.org/10.1016/j.jnucmat.2015.01.038

Global erosion and deposition patterns in JET with the ITER-like wall. / Baron-Wiechecc, A. (Corresponding Author); Widdowson, A; Alves, E.; Ayres, C.F.; Barradas, N.P.; Brezinsek, S.; Coad, J.P.; Catarino, N.; Heinola, K.; Likonen, J.; Matthews, G.F.; Mayer, M.; Petersson, P.; Rubel, M.; van Renterghem, W.; Uytdenhouwen, I.; Contributors, JET EFDA.

In: Journal of Nuclear Materials, Vol. 463, 2015, p. 157-161.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Global erosion and deposition patterns in JET with the ITER-like wall

AU - Baron-Wiechecc, A.

AU - Widdowson, A

AU - Alves, E.

AU - Ayres, C.F.

AU - Barradas, N.P.

AU - Brezinsek, S.

AU - Coad, J.P.

AU - Catarino, N.

AU - Heinola, K.

AU - Likonen, J.

AU - Matthews, G.F.

AU - Mayer, M.

AU - Petersson, P.

AU - Rubel, M.

AU - van Renterghem, W.

AU - Uytdenhouwen, I.

AU - Contributors, JET EFDA

N1 - Project code: 10445

PY - 2015

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N2 - A set of Be and Wtiles removed after the first ITER-like wall campaigns (JET-ILW) from 2011 to 2012 has been analysed. The results indicate that the primary erosion site is in the main chamber (Be) as in previous carbon campaigns (JET-C). In particular the limiters tiles near the mid-plane are eroded probably during the limiter phases of discharges. W is found at low concentrations on all plasma-facing surfaces of the vessel indicating deposition via plasma transport initially from the W divertor and from main chamber W-coated tiles; there are also traces of Mo (used as an interlayer for these coatings). Deposited films in the inner divertor have a layered structure, and every layer is dominated by Be with some Wand O content.

AB - A set of Be and Wtiles removed after the first ITER-like wall campaigns (JET-ILW) from 2011 to 2012 has been analysed. The results indicate that the primary erosion site is in the main chamber (Be) as in previous carbon campaigns (JET-C). In particular the limiters tiles near the mid-plane are eroded probably during the limiter phases of discharges. W is found at low concentrations on all plasma-facing surfaces of the vessel indicating deposition via plasma transport initially from the W divertor and from main chamber W-coated tiles; there are also traces of Mo (used as an interlayer for these coatings). Deposited films in the inner divertor have a layered structure, and every layer is dominated by Be with some Wand O content.

U2 - 10.1016/j.jnucmat.2015.01.038

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M3 - Article

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -

Baron-Wiechecc A, Widdowson A, Alves E, Ayres CF, Barradas NP, Brezinsek S et al. Global erosion and deposition patterns in JET with the ITER-like wall. Journal of Nuclear Materials. 2015;463:157-161. https://doi.org/10.1016/j.jnucmat.2015.01.038