Beryllium accumulation at the inner divertor of JET

Jari Likonen; Elizaveta Vainonen-Ahlgren; J.P. Coad; Riitta Zilliacus; Tommi Renvall; D.E. Hole; M. Rubel; K. Arstila; G.F. Matthews; M. Stamp; JET-EFDA contributors

doi:10.1016/j.jnucmat.2004.10.151

Beryllium accumulation at the inner divertor of JET

Jari Likonen (Corresponding Author), Elizaveta Vainonen-Ahlgren, J.P. Coad, Riitta Zilliacus, Tommi Renvall, D.E. Hole, M. Rubel, K. Arstila, G.F. Matthews, M. Stamp, JET-EFDA contributors

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

Abstract

MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.

Original language	English
Pages (from-to)	60-64
Journal	Journal of Nuclear Materials
Volume	337–339
DOIs	https://doi.org/10.1016/j.jnucmat.2004.10.151
Publication status	Published - 2005
MoE publication type	A4 Article in a conference publication
Event	XXXIX Annual Conference of the Finnish Physical Society - Espoo, Finland Duration: 17 Mar 2005 → 19 Mar 2005

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@article{a22aa64c42c74804a17c5593e5fe8937,

title = "Beryllium accumulation at the inner divertor of JET",

abstract = "MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.",

author = "Jari Likonen and Elizaveta Vainonen-Ahlgren and J.P. Coad and Riitta Zilliacus and Tommi Renvall and D.E. Hole and M. Rubel and K. Arstila and G.F. Matthews and M. Stamp and {JET-EFDA contributors}",

year = "2005",

doi = "10.1016/j.jnucmat.2004.10.151",

language = "English",

volume = "337–339",

pages = "60--64",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

note = "XXXIX Annual Conference of the Finnish Physical Society ; Conference date: 17-03-2005 Through 19-03-2005",

}

TY - JOUR

T1 - Beryllium accumulation at the inner divertor of JET

AU - Likonen, Jari

AU - Vainonen-Ahlgren, Elizaveta

AU - Coad, J.P.

AU - Zilliacus, Riitta

AU - Renvall, Tommi

AU - Hole, D.E.

AU - Rubel, M.

AU - Arstila, K.

AU - Matthews, G.F.

AU - Stamp, M.

AU - JET-EFDA contributors

PY - 2005

Y1 - 2005

N2 - MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.

AB - MkIIGB divertor tiles exposed in JET for the 1998–2001 and 1999–2001 campaigns have been used to assess the amount of beryllium and carbon deposited at the inner divertor wall. Total amount of Be at the inner divertor tiles was determined and integrated toroidally. Results were compared with data obtained with optical spectroscopy and good agreement was obtained. The amount of deposited C was computed from the amount of deposited Be assuming that the Be/C ratio arriving in the divertor is the same as the Be/C ratio in the main chamber. On the basis of this analysis we would expect there to be ∼0.4 kg of C deposited. This gives an average C deposition rate lower than during the MkIIA phase.

U2 - 10.1016/j.jnucmat.2004.10.151

DO - 10.1016/j.jnucmat.2004.10.151

M3 - Article in a proceedings journal

SN - 0022-3115

VL - 337–339

SP - 60

EP - 64

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

T2 - XXXIX Annual Conference of the Finnish Physical Society

Y2 - 17 March 2005 through 19 March 2005

ER -

Beryllium accumulation at the inner divertor of JET

Abstract

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