Long-term fuel retention in JET ITER-like wall

K. Heinola (Corresponding Author), A. Widdowson, J. Likonen, E. Alves, A. Baron-Wiechec, N. Barradas, S. Brezinsek, N. Catarino, P. Coad, S. Koivuranta, S. Krat, G. F. Matthews, M. Mayer, P. Petersson, Jet Contributors

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Abstract

Post-mortem studies with ion beam analysis, thermal desorption, and secondary ion mass spectrometry have been applied for investigating the long-term fuel retention in the JET ITERlike wall components. The retention takes place via implantation and co-deposition, and the highest retention values were found to correlate with the thickness of the deposited impurity layers. From the total amount of retained D fuel over half was detected in the divertor region. The majority of the retained D is on the top surface of the inner divertor, whereas the least retention was measured in the main chamber on the mid-plane of the inner wall limiter. The recessed areas of the inner wall showed significant contribution to the main chamber total retention. Thermal desorption spectroscopy analysis revealed the energetic T from DD reactions being implanted in the divertor. The total T inventory was assessed to be >0.3 mg.

Original languageEnglish
Article number014075
Number of pages7
JournalPhysica Scripta
Volume2016
Issue numberT167
DOIs
Publication statusPublished - 25 Jan 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Desorption
chambers
desorption
Limiter
Implantation
Thermal Analysis
Mass Spectrometry
Impurities
Correlate
secondary ion mass spectrometry
Spectroscopy
implantation
thermal analysis
ion beams
impurities
spectroscopy

Keywords

  • deposition
  • fuel retention
  • fusion energy
  • ion beam analysis
  • TDS

Cite this

Heinola, K., Widdowson, A., Likonen, J., Alves, E., Baron-Wiechec, A., Barradas, N., ... Contributors, J. (2016). Long-term fuel retention in JET ITER-like wall. Physica Scripta, 2016(T167), [014075]. https://doi.org/10.1088/0031-8949/T167/1/014075
Heinola, K. ; Widdowson, A. ; Likonen, J. ; Alves, E. ; Baron-Wiechec, A. ; Barradas, N. ; Brezinsek, S. ; Catarino, N. ; Coad, P. ; Koivuranta, S. ; Krat, S. ; Matthews, G. F. ; Mayer, M. ; Petersson, P. ; Contributors, Jet. / Long-term fuel retention in JET ITER-like wall. In: Physica Scripta. 2016 ; Vol. 2016, No. T167.
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Heinola, K, Widdowson, A, Likonen, J, Alves, E, Baron-Wiechec, A, Barradas, N, Brezinsek, S, Catarino, N, Coad, P, Koivuranta, S, Krat, S, Matthews, GF, Mayer, M, Petersson, P & Contributors, J 2016, 'Long-term fuel retention in JET ITER-like wall', Physica Scripta, vol. 2016, no. T167, 014075. https://doi.org/10.1088/0031-8949/T167/1/014075

Long-term fuel retention in JET ITER-like wall. / Heinola, K. (Corresponding Author); Widdowson, A.; Likonen, J.; Alves, E.; Baron-Wiechec, A.; Barradas, N.; Brezinsek, S.; Catarino, N.; Coad, P.; Koivuranta, S.; Krat, S.; Matthews, G. F.; Mayer, M.; Petersson, P.; Contributors, Jet.

In: Physica Scripta, Vol. 2016, No. T167, 014075, 25.01.2016.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Long-term fuel retention in JET ITER-like wall

AU - Heinola, K.

AU - Widdowson, A.

AU - Likonen, J.

AU - Alves, E.

AU - Baron-Wiechec, A.

AU - Barradas, N.

AU - Brezinsek, S.

AU - Catarino, N.

AU - Coad, P.

AU - Koivuranta, S.

AU - Krat, S.

AU - Matthews, G. F.

AU - Mayer, M.

AU - Petersson, P.

AU - Contributors, Jet

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AB - Post-mortem studies with ion beam analysis, thermal desorption, and secondary ion mass spectrometry have been applied for investigating the long-term fuel retention in the JET ITERlike wall components. The retention takes place via implantation and co-deposition, and the highest retention values were found to correlate with the thickness of the deposited impurity layers. From the total amount of retained D fuel over half was detected in the divertor region. The majority of the retained D is on the top surface of the inner divertor, whereas the least retention was measured in the main chamber on the mid-plane of the inner wall limiter. The recessed areas of the inner wall showed significant contribution to the main chamber total retention. Thermal desorption spectroscopy analysis revealed the energetic T from DD reactions being implanted in the divertor. The total T inventory was assessed to be >0.3 mg.

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Heinola K, Widdowson A, Likonen J, Alves E, Baron-Wiechec A, Barradas N et al. Long-term fuel retention in JET ITER-like wall. Physica Scripta. 2016 Jan 25;2016(T167). 014075. https://doi.org/10.1088/0031-8949/T167/1/014075