Co-deposited layers in the divertor region of JET-ILW

JET-EFDA contributors

doi:10.1016/j.jnucmat.2014.12.077

Co-deposited layers in the divertor region of JET-ILW

JET-EFDA contributors

Culham Science Centre
KTH Royal Institute of Technology
Forschungszentrum Jülich GmbH (FZJ)

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

36 Citations (Scopus)

Abstract

Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.

Original language	English
Pages (from-to)	814-817
Journal	Journal of Nuclear Materials
Volume	463
DOIs	https://doi.org/10.1016/j.jnucmat.2014.12.077
Publication status	Published - 2015
MoE publication type	A1 Journal article-refereed

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10.1016/j.jnucmat.2014.12.077

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@article{3eff665871a147629966940da3946256,

title = "Co-deposited layers in the divertor region of JET-ILW",

abstract = "Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.",

author = "P. Petersson and M. Rubel and H.G. Esser and Jari Likonen and Seppo Koivuranta and A. Widdowson and \{JET-EFDA contributors\}",

note = "Project code: 104445 ",

year = "2015",

doi = "10.1016/j.jnucmat.2014.12.077",

language = "English",

volume = "463",

pages = "814--817",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - Co-deposited layers in the divertor region of JET-ILW

AU - Petersson, P.

AU - Rubel, M.

AU - Esser, H.G.

AU - Likonen, Jari

AU - Koivuranta, Seppo

AU - Widdowson, A.

AU - JET-EFDA contributors

N1 - Project code: 104445

PY - 2015

Y1 - 2015

N2 - Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.

AB - Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.

UR - https://www.sciencedirect.com/journal/journal-of-nuclear-materials/vol/463/suppl/C

U2 - 10.1016/j.jnucmat.2014.12.077

DO - 10.1016/j.jnucmat.2014.12.077

M3 - Article

SN - 0022-3115

VL - 463

SP - 814

EP - 817

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Co-deposited layers in the divertor region of JET-ILW

Abstract

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