Erosion and deposition in the JET divertor during the first ILW campaign

M. Mayer (Corresponding Author), S. Krat, W. Van Renterghem, A. Baron-Wiechec, S. Brezinsek, I. Bykov, P. Coad, Yu Gasparyan, K. Heinola, J. Likonen, A. Pisarev, C. Ruset, G. de Saint-Aubin, A. Widdowson, JET Contributors

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Abstract

Erosion and deposition were studied in the JET divertor during the first JET ITER-like wall campaign 2011 to 2012 using marker tiles. An almost complete poloidal section consisting of tiles 0, 1, 3, 4, 6, 7, 8 was studied. The data from divertor tile surfaces were completed by the analysis of samples from remote divertor areas and from the inner wall cladding. The total mass of material deposited in the divertor decreased by a factor of 4-9 compared to the deposition of carbon during all-carbon JET operation before 2010. Deposits in 2011 to 2012 consist mainly of beryllium with 5-20 at.% of carbon and oxygen, respectively, and small amounts of Ni, Cr, Fe and W. This decrease of material deposition in the divertor is accompanied by a decrease of total deuterium retention inside the JET vessel by a factor of 10 to 20. The detailed erosion/deposition pattern in the divertor with the ITER-like wall configuration shows rigorous changes compared to the pattern with the all-carbon JET configuration.
Original languageEnglish
Article number014051
Number of pages9
JournalPhysica Scripta
Volume2016
Issue numberT167
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

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Erosion
erosion
Carbon
Tile
tiles
carbon
Decrease
Configuration
Vessel
Oxygen
beryllium
configurations
markers
vessels
deuterium
deposits
oxygen

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Mayer, M., Krat, S., Van Renterghem, W., Baron-Wiechec, A., Brezinsek, S., Bykov, I., ... Contributors, JET. (2016). Erosion and deposition in the JET divertor during the first ILW campaign. Physica Scripta, 2016(T167), [014051]. https://doi.org/10.1088/0031-8949/T167/1/014051
Mayer, M. ; Krat, S. ; Van Renterghem, W. ; Baron-Wiechec, A. ; Brezinsek, S. ; Bykov, I. ; Coad, P. ; Gasparyan, Yu ; Heinola, K. ; Likonen, J. ; Pisarev, A. ; Ruset, C. ; de Saint-Aubin, G. ; Widdowson, A. ; Contributors, JET. / Erosion and deposition in the JET divertor during the first ILW campaign. In: Physica Scripta. 2016 ; Vol. 2016, No. T167.
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title = "Erosion and deposition in the JET divertor during the first ILW campaign",
abstract = "Erosion and deposition were studied in the JET divertor during the first JET ITER-like wall campaign 2011 to 2012 using marker tiles. An almost complete poloidal section consisting of tiles 0, 1, 3, 4, 6, 7, 8 was studied. The data from divertor tile surfaces were completed by the analysis of samples from remote divertor areas and from the inner wall cladding. The total mass of material deposited in the divertor decreased by a factor of 4-9 compared to the deposition of carbon during all-carbon JET operation before 2010. Deposits in 2011 to 2012 consist mainly of beryllium with 5-20 at.{\%} of carbon and oxygen, respectively, and small amounts of Ni, Cr, Fe and W. This decrease of material deposition in the divertor is accompanied by a decrease of total deuterium retention inside the JET vessel by a factor of 10 to 20. The detailed erosion/deposition pattern in the divertor with the ITER-like wall configuration shows rigorous changes compared to the pattern with the all-carbon JET configuration.",
author = "M. Mayer and S. Krat and {Van Renterghem}, W. and A. Baron-Wiechec and S. Brezinsek and I. Bykov and P. Coad and Yu Gasparyan and K. Heinola and J. Likonen and A. Pisarev and C. Ruset and {de Saint-Aubin}, G. and A. Widdowson and JET Contributors",
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Mayer, M, Krat, S, Van Renterghem, W, Baron-Wiechec, A, Brezinsek, S, Bykov, I, Coad, P, Gasparyan, Y, Heinola, K, Likonen, J, Pisarev, A, Ruset, C, de Saint-Aubin, G, Widdowson, A & Contributors, JET 2016, 'Erosion and deposition in the JET divertor during the first ILW campaign', Physica Scripta, vol. 2016, no. T167, 014051. https://doi.org/10.1088/0031-8949/T167/1/014051

Erosion and deposition in the JET divertor during the first ILW campaign. / Mayer, M. (Corresponding Author); Krat, S.; Van Renterghem, W.; Baron-Wiechec, A.; Brezinsek, S.; Bykov, I.; Coad, P.; Gasparyan, Yu; Heinola, K.; Likonen, J.; Pisarev, A.; Ruset, C.; de Saint-Aubin, G.; Widdowson, A.; Contributors, JET.

In: Physica Scripta, Vol. 2016, No. T167, 014051, 2016.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Erosion and deposition in the JET divertor during the first ILW campaign

AU - Mayer, M.

AU - Krat, S.

AU - Van Renterghem, W.

AU - Baron-Wiechec, A.

AU - Brezinsek, S.

AU - Bykov, I.

AU - Coad, P.

AU - Gasparyan, Yu

AU - Heinola, K.

AU - Likonen, J.

AU - Pisarev, A.

AU - Ruset, C.

AU - de Saint-Aubin, G.

AU - Widdowson, A.

AU - Contributors, JET

N1 - Project code: 104445

PY - 2016

Y1 - 2016

N2 - Erosion and deposition were studied in the JET divertor during the first JET ITER-like wall campaign 2011 to 2012 using marker tiles. An almost complete poloidal section consisting of tiles 0, 1, 3, 4, 6, 7, 8 was studied. The data from divertor tile surfaces were completed by the analysis of samples from remote divertor areas and from the inner wall cladding. The total mass of material deposited in the divertor decreased by a factor of 4-9 compared to the deposition of carbon during all-carbon JET operation before 2010. Deposits in 2011 to 2012 consist mainly of beryllium with 5-20 at.% of carbon and oxygen, respectively, and small amounts of Ni, Cr, Fe and W. This decrease of material deposition in the divertor is accompanied by a decrease of total deuterium retention inside the JET vessel by a factor of 10 to 20. The detailed erosion/deposition pattern in the divertor with the ITER-like wall configuration shows rigorous changes compared to the pattern with the all-carbon JET configuration.

AB - Erosion and deposition were studied in the JET divertor during the first JET ITER-like wall campaign 2011 to 2012 using marker tiles. An almost complete poloidal section consisting of tiles 0, 1, 3, 4, 6, 7, 8 was studied. The data from divertor tile surfaces were completed by the analysis of samples from remote divertor areas and from the inner wall cladding. The total mass of material deposited in the divertor decreased by a factor of 4-9 compared to the deposition of carbon during all-carbon JET operation before 2010. Deposits in 2011 to 2012 consist mainly of beryllium with 5-20 at.% of carbon and oxygen, respectively, and small amounts of Ni, Cr, Fe and W. This decrease of material deposition in the divertor is accompanied by a decrease of total deuterium retention inside the JET vessel by a factor of 10 to 20. The detailed erosion/deposition pattern in the divertor with the ITER-like wall configuration shows rigorous changes compared to the pattern with the all-carbon JET configuration.

U2 - 10.1088/0031-8949/T167/1/014051

DO - 10.1088/0031-8949/T167/1/014051

M3 - Article

VL - 2016

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

IS - T167

M1 - 014051

ER -

Mayer M, Krat S, Van Renterghem W, Baron-Wiechec A, Brezinsek S, Bykov I et al. Erosion and deposition in the JET divertor during the first ILW campaign. Physica Scripta. 2016;2016(T167). 014051. https://doi.org/10.1088/0031-8949/T167/1/014051