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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    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.",
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    author = "K. Heinola and A. Widdowson and J. Likonen and E. Alves and A. Baron-Wiechec and N. Barradas and S. Brezinsek and N. Catarino and P. Coad and S. Koivuranta and S. Krat and Matthews, {G. F.} and M. Mayer and P. Petersson and Jet Contributors",
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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

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    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