Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

M. Mayer (Corresponding Author), V. Rohde, Jari Likonen, Elizaveta Vainonen-Ahlgren, K. Krieger, X. Gong, J. Chen, ASDEX Upgrade Team

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)

Abstract

Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.
Original languageEnglish
Pages (from-to)119 - 123
Number of pages5
JournalJournal of Nuclear Materials
Volume337-339
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

tiles
Tile
erosion
Erosion
Carbon
baffles
carbon
roofs
Roofs
Hydrocarbons
vessels
hydrocarbons
chambers
Molecules
molecules

Keywords

  • ASDEX upgrade
  • divertor
  • co-deposition
  • divertor material
  • erosion
  • deposition
  • impurity transport
  • ITER
  • JET
  • fusion energy

Cite this

Mayer, M., Rohde, V., Likonen, J., Vainonen-Ahlgren, E., Krieger, K., Gong, X., ... ASDEX Upgrade Team (2005). Carbon erosion and deposition on the ASDEX Upgrade divertor tiles. Journal of Nuclear Materials, 337-339, 119 - 123. https://doi.org/10.1016/j.jnucmat.2004.10.046
Mayer, M. ; Rohde, V. ; Likonen, Jari ; Vainonen-Ahlgren, Elizaveta ; Krieger, K. ; Gong, X. ; Chen, J. ; ASDEX Upgrade Team. / Carbon erosion and deposition on the ASDEX Upgrade divertor tiles. In: Journal of Nuclear Materials. 2005 ; Vol. 337-339. pp. 119 - 123.
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abstract = "Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88{\%} were deposited on tiles and 9{\%} in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.",
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Mayer, M, Rohde, V, Likonen, J, Vainonen-Ahlgren, E, Krieger, K, Gong, X, Chen, J & ASDEX Upgrade Team 2005, 'Carbon erosion and deposition on the ASDEX Upgrade divertor tiles', Journal of Nuclear Materials, vol. 337-339, pp. 119 - 123. https://doi.org/10.1016/j.jnucmat.2004.10.046

Carbon erosion and deposition on the ASDEX Upgrade divertor tiles. / Mayer, M. (Corresponding Author); Rohde, V.; Likonen, Jari; Vainonen-Ahlgren, Elizaveta; Krieger, K.; Gong, X.; Chen, J.; ASDEX Upgrade Team.

In: Journal of Nuclear Materials, Vol. 337-339, 2005, p. 119 - 123.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

AU - Mayer, M.

AU - Rohde, V.

AU - Likonen, Jari

AU - Vainonen-Ahlgren, Elizaveta

AU - Krieger, K.

AU - Gong, X.

AU - Chen, J.

AU - ASDEX Upgrade Team, null

PY - 2005

Y1 - 2005

N2 - Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.

AB - Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.

KW - ASDEX upgrade

KW - divertor

KW - co-deposition

KW - divertor material

KW - erosion

KW - deposition

KW - impurity transport

KW - ITER

KW - JET

KW - fusion energy

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VL - 337-339

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

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