Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns

J.P. Coad; S. Gruenhagen; D.E. Hole; Antti Hakola; Seppo Koivuranta; Jari Likonen; M. Rubel; A. Widdowson; JET-EFDA contributors

doi:10.1088/0031-8949/2011/T145/014003

Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns

J.P. Coad^*
, S. Gruenhagen
, D.E. Hole
, Antti Hakola
, Seppo Koivuranta
, Jari Likonen
, M. Rubel
, A. Widdowson
, JET-EFDA contributors

^*Corresponding author for this work

Culham Science Centre
University of Sussex
KTH Royal Institute of Technology

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

23 Citations (Scopus)

Abstract

In 2010, all the plasma-facing components were removed from JET so that the carbon-based surfaces could be replaced with beryllium (Be) or tungsten as part of the ITER-like wall (ILW) project. This gives unprecedented opportunities for post-mortem analyses of these plasma-facing surfaces; this paper reviews the data obtained so far and relates the information to studies of tiles removed during previous JET shutdowns. The general pattern of erosion/deposition at the JET divertor has been maintained, with deposition of impurities in the scrape-off layer (SOL) at the inner divertor and preferential removal of carbon and transport into the corner. However, the remaining films in the SOL contain very high Be/C ratios at the surface. The first measurements of erosion using a tile profiler have been completed, with up to 200 microns erosion being recorded at points on the inner wall guard limiters.

Original language	English
Article number	014003
Number of pages	6
Journal	Physica Scripta
Volume	2011
Issue number	T145
DOIs	https://doi.org/10.1088/0031-8949/2011/T145/014003
Publication status	Published - 2011
MoE publication type	A4 Article in a conference publication
Event	13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-13 - Rosenheim, Germany Duration: 9 May 2011 → 13 May 2011

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10.1088/0031-8949/2011/T145/014003

Cite this

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title = "Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns",

abstract = "In 2010, all the plasma-facing components were removed from JET so that the carbon-based surfaces could be replaced with beryllium (Be) or tungsten as part of the ITER-like wall (ILW) project. This gives unprecedented opportunities for post-mortem analyses of these plasma-facing surfaces; this paper reviews the data obtained so far and relates the information to studies of tiles removed during previous JET shutdowns. The general pattern of erosion/deposition at the JET divertor has been maintained, with deposition of impurities in the scrape-off layer (SOL) at the inner divertor and preferential removal of carbon and transport into the corner. However, the remaining films in the SOL contain very high Be/C ratios at the surface. The first measurements of erosion using a tile profiler have been completed, with up to 200 microns erosion being recorded at points on the inner wall guard limiters.",

author = "J.P. Coad and S. Gruenhagen and D.E. Hole and Antti Hakola and Seppo Koivuranta and Jari Likonen and M. Rubel and A. Widdowson and \{JET-EFDA contributors\}",

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doi = "10.1088/0031-8949/2011/T145/014003",

language = "English",

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journal = "Physica Scripta",

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T1 - Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns

AU - Coad, J.P.

AU - Gruenhagen, S.

AU - Hole, D.E.

AU - Hakola, Antti

AU - Koivuranta, Seppo

AU - Likonen, Jari

AU - Rubel, M.

AU - Widdowson, A.

AU - JET-EFDA contributors

PY - 2011

Y1 - 2011

N2 - In 2010, all the plasma-facing components were removed from JET so that the carbon-based surfaces could be replaced with beryllium (Be) or tungsten as part of the ITER-like wall (ILW) project. This gives unprecedented opportunities for post-mortem analyses of these plasma-facing surfaces; this paper reviews the data obtained so far and relates the information to studies of tiles removed during previous JET shutdowns. The general pattern of erosion/deposition at the JET divertor has been maintained, with deposition of impurities in the scrape-off layer (SOL) at the inner divertor and preferential removal of carbon and transport into the corner. However, the remaining films in the SOL contain very high Be/C ratios at the surface. The first measurements of erosion using a tile profiler have been completed, with up to 200 microns erosion being recorded at points on the inner wall guard limiters.

AB - In 2010, all the plasma-facing components were removed from JET so that the carbon-based surfaces could be replaced with beryllium (Be) or tungsten as part of the ITER-like wall (ILW) project. This gives unprecedented opportunities for post-mortem analyses of these plasma-facing surfaces; this paper reviews the data obtained so far and relates the information to studies of tiles removed during previous JET shutdowns. The general pattern of erosion/deposition at the JET divertor has been maintained, with deposition of impurities in the scrape-off layer (SOL) at the inner divertor and preferential removal of carbon and transport into the corner. However, the remaining films in the SOL contain very high Be/C ratios at the surface. The first measurements of erosion using a tile profiler have been completed, with up to 200 microns erosion being recorded at points on the inner wall guard limiters.

U2 - 10.1088/0031-8949/2011/T145/014003

DO - 10.1088/0031-8949/2011/T145/014003

M3 - Article in a proceedings journal

SN - 0031-8949

VL - 2011

JO - Physica Scripta

JF - Physica Scripta

IS - T145

M1 - 014003

T2 - 13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-13

Y2 - 9 May 2011 through 13 May 2011

ER -

Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns

Abstract

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