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 journalArticleScientificpeer-review

25 Citations (Scopus)

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 languageEnglish
Pages (from-to)60 - 64
Number of pages5
JournalJournal of Nuclear Materials
Volume337-339
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

Beryllium
Tile
beryllium
tiles
Deposition rates
Carbon
chambers
carbon
spectroscopy
Optical spectroscopy

Keywords

  • divertor
  • beryllium
  • carbon based materials
  • surface analysis
  • JET
  • fusion energy
  • plasma
  • ITER

Cite this

Likonen, J., Vainonen-Ahlgren, E., Coad, J. P., Zilliacus, R., Renvall, T., Hole, D. E., ... JET-EFDA Contributors (2005). Beryllium accumulation at the inner divertor of JET. Journal of Nuclear Materials, 337-339, 60 - 64. https://doi.org/10.1016/j.jnucmat.2004.10.151
Likonen, Jari ; Vainonen-Ahlgren, Elizaveta ; Coad, J.P. ; Zilliacus, Riitta ; Renvall, Tommi ; Hole, D.E. ; Rubel, M. ; Arstila, K. ; Matthews, G.F. ; Stamp, M. ; JET-EFDA Contributors. / Beryllium accumulation at the inner divertor of JET. In: Journal of Nuclear Materials. 2005 ; Vol. 337-339. pp. 60 - 64.
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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.",
keywords = "divertor, beryllium, carbon based materials, surface analysis, JET, fusion energy, plasma, ITER",
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}",
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Likonen, J, Vainonen-Ahlgren, E, Coad, JP, Zilliacus, R, Renvall, T, Hole, DE, Rubel, M, Arstila, K, Matthews, GF, Stamp, M & JET-EFDA Contributors 2005, 'Beryllium accumulation at the inner divertor of JET', Journal of Nuclear Materials, vol. 337-339, pp. 60 - 64. https://doi.org/10.1016/j.jnucmat.2004.10.151

Beryllium accumulation at the inner divertor of JET. / Likonen, Jari (Corresponding Author); Vainonen-Ahlgren, Elizaveta; Coad, J.P.; Zilliacus, Riitta; Renvall, Tommi; Hole, D.E.; Rubel, M.; Arstila, K.; Matthews, G.F.; Stamp, M.; JET-EFDA Contributors.

In: Journal of Nuclear Materials, Vol. 337-339, 2005, p. 60 - 64.

Research output: Contribution to journalArticleScientificpeer-review

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, null

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.

KW - divertor

KW - beryllium

KW - carbon based materials

KW - surface analysis

KW - JET

KW - fusion energy

KW - plasma

KW - ITER

U2 - 10.1016/j.jnucmat.2004.10.151

DO - 10.1016/j.jnucmat.2004.10.151

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VL - 337-339

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -

Likonen J, Vainonen-Ahlgren E, Coad JP, Zilliacus R, Renvall T, Hole DE et al. Beryllium accumulation at the inner divertor of JET. Journal of Nuclear Materials. 2005;337-339:60 - 64. https://doi.org/10.1016/j.jnucmat.2004.10.151