Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

M. Mayer; V. Rohde; Jari Likonen; Elizaveta Vainonen-Ahlgren; K. Krieger; X. Gong; J. Chen; ASDEX Upgrade Team

doi:10.1016/j.jnucmat.2004.10.046

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

Max-Planck-Institut für Plasmaphysik (IPP)

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

36 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 language	English
Pages (from-to)	119 - 123
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	337-339
DOIs	https://doi.org/10.1016/j.jnucmat.2004.10.046
Publication status	Published - 2005
MoE publication type	A1 Journal article-refereed

Keywords

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

UN SDGs

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

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10.1016/j.jnucmat.2004.10.046

Cite this

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title = "Carbon erosion and deposition on the ASDEX Upgrade divertor tiles",

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.",

keywords = "ASDEX upgrade, divertor, co-deposition, divertor material, erosion, deposition, impurity transport, ITER, JET, fusion energy",

author = "M. Mayer and V. Rohde and Jari Likonen and Elizaveta Vainonen-Ahlgren and K. Krieger and X. Gong and J. Chen and {ASDEX Upgrade Team}",

year = "2005",

doi = "10.1016/j.jnucmat.2004.10.046",

language = "English",

volume = "337-339",

pages = "119 -- 123",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

}

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

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

U2 - 10.1016/j.jnucmat.2004.10.046

DO - 10.1016/j.jnucmat.2004.10.046

M3 - Article

SN - 0022-3115

VL - 337-339

SP - 119

EP - 123

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

Abstract

Keywords

UN SDGs

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