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

Aleksandra Baron-Wiechec; Anna Widdowson; Eduardo Alves; Charkie Ayres; Nuno Barradas; Sebastijan Brezinsek; Paul Coad; Norberto Catarino; Kalle Heinola; Jari Likonen; Guy Matthews; Matej Mayer; Per Petersson; Marek Rubel; Wouter Van Renterghem; Inge Uytdenhouwen

doi:10.1016/j.jnucmat.2015.01.038

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

Aleksandra Baron-Wiechec, Anna Widdowson, Eduardo Alves, Charkie Ayres, Nuno Barradas, Sebastijan Brezinsek, Paul Coad, Norberto Catarino, Kalle Heinola, Jari Likonen, Guy Matthews, Matej Mayer, Per Petersson, Marek Rubel, Wouter Van Renterghem, Inge Uytdenhouwen

Research output › peer-review

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 W and O content.

Original language	English
Pages (from-to)	157-161
Journal	Journal of Nuclear Materials
Volume	463
DOIs	https://doi.org/10.1016/j.jnucmat.2015.01.038
State	Published - Aug 2015
Event	21st International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Kanazawa Duration: 26 May 2014 → 30 May 2014

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Cite this

Baron-Wiechec, A., Widdowson, A., Alves, E., Ayres, C., Barradas, N., Brezinsek, S., Coad, P., Catarino, N., Heinola, K., Likonen, J., Matthews, G., Mayer, M., Petersson, P., Rubel, M., Van Renterghem, W., & Uytdenhouwen, I. (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

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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 W and O content.",

keywords = "JET, scanning electron microscopy",

author = "Aleksandra Baron-Wiechec and Anna Widdowson and Eduardo Alves and Charkie Ayres and Nuno Barradas and Sebastijan Brezinsek and Paul Coad and Norberto Catarino and Kalle Heinola and Jari Likonen and Guy Matthews and Matej Mayer and Per Petersson and Marek Rubel and {Van Renterghem}, Wouter and Inge Uytdenhouwen",

note = "Score = 10; 21st International Conference on Plasma-Surface Interactions in Controlled Fusion Devices ; Conference date: 26-05-2014 Through 30-05-2014",

year = "2015",

month = aug,

doi = "10.1016/j.jnucmat.2015.01.038",

language = "English",

volume = "463",

pages = "157--161",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

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Baron-Wiechec, A, Widdowson, A, Alves, E, Ayres, C, Barradas, N, Brezinsek, S, Coad, P, Catarino, N, Heinola, K, Likonen, J, Matthews, G, Mayer, M, Petersson, P, Rubel, M, Van Renterghem, W & Uytdenhouwen, I 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

TY - JOUR

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

AU - Baron-Wiechec, Aleksandra

AU - Widdowson, Anna

AU - Alves, Eduardo

AU - Ayres, Charkie

AU - Barradas, Nuno

AU - Brezinsek, Sebastijan

AU - Coad, Paul

AU - Catarino, Norberto

AU - Heinola, Kalle

AU - Likonen, Jari

AU - Matthews, Guy

AU - Mayer, Matej

AU - Petersson, Per

AU - Rubel, Marek

AU - Van Renterghem, Wouter

AU - Uytdenhouwen, Inge

N1 - Score = 10

PY - 2015/8

Y1 - 2015/8

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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 W and O content.

KW - JET

KW - scanning electron microscopy

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

T2 - 21st International Conference on Plasma-Surface Interactions in Controlled Fusion Devices

Y2 - 26 May 2014 through 30 May 2014

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