Fusion technology activities at JET: Latest results

JET-EFDA collaborators

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    The JET Task Force Fusion Technology (TF-FT) was launched in 2000 to use the unique capabilities, facilities and operating experience at JET to provide significant contributions to the research programme on both JET and ITER. This paper presents the most recent results obtained within the JET TF-FT programme.

    The Tritium (T) retention measurements have confirmed high surface but little bulk T concentrations on the MKII-SRP divertor tiles and T thermal desorption tests confirmed the necessity to reach at least 600 °C. From the 2007 shutdown the MKII-HD (more ITER like) divertor has revealed some slight changes in the nature of the erosion/deposition. In order to improve analysis, time resolution devices such as quartz micro-balances and rotating collectors have been located beneath the divertor for deposition and plasma physics correlations. Due to improvement of dedicated models and technologies, in situ laser techniques for detritiation and characterisation/removal have provided encouraging results on quantitative characteristics (composition, thickness, adherence, temperature) of deposited films on plasma facing components. A particular effort on temperature control of the new metallic ITER-like wall (ILW) that is presently being installed in JET has been pursued with active laser infrared thermography. JET TF-FT also contributes to the operator strategy to comply with the safety agency requirements for T management. Recent results on two major topics purification of tritiated water and development of the 3He method for the determination of the T concentration in waste drums are presented. Finally, this paper also presents some activities in preparation of the ILW for the pre-characterisation of marker tiles and the refurbishment of diagnostics for deposition characterisation.
    Original languageEnglish
    Pages (from-to)615-618
    Number of pages4
    JournalFusion Engineering and Design
    Volume86
    Issue number6-8
    DOIs
    Publication statusPublished - 2011
    MoE publication typeA1 Journal article-refereed
    Event26th Symposium of Fusion Technology, SOFT-26 - Porto, Portugal
    Duration: 27 Sep 20101 Oct 2010
    Conference number: 26

    Fingerprint

    Fusion reactions
    Tile
    Plasmas
    Thermal desorption
    Lasers
    Tritium
    Temperature control
    Purification
    Quartz
    Erosion
    Physics
    Chemical analysis
    Water
    Temperature

    Keywords

    • fusion technology
    • Tritium
    • erosion
    • deposition
    • waste
    • detritiation

    Cite this

    JET-EFDA collaborators. / Fusion technology activities at JET : Latest results. In: Fusion Engineering and Design. 2011 ; Vol. 86, No. 6-8. pp. 615-618.
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    abstract = "The JET Task Force Fusion Technology (TF-FT) was launched in 2000 to use the unique capabilities, facilities and operating experience at JET to provide significant contributions to the research programme on both JET and ITER. This paper presents the most recent results obtained within the JET TF-FT programme.The Tritium (T) retention measurements have confirmed high surface but little bulk T concentrations on the MKII-SRP divertor tiles and T thermal desorption tests confirmed the necessity to reach at least 600 °C. From the 2007 shutdown the MKII-HD (more ITER like) divertor has revealed some slight changes in the nature of the erosion/deposition. In order to improve analysis, time resolution devices such as quartz micro-balances and rotating collectors have been located beneath the divertor for deposition and plasma physics correlations. Due to improvement of dedicated models and technologies, in situ laser techniques for detritiation and characterisation/removal have provided encouraging results on quantitative characteristics (composition, thickness, adherence, temperature) of deposited films on plasma facing components. A particular effort on temperature control of the new metallic ITER-like wall (ILW) that is presently being installed in JET has been pursued with active laser infrared thermography. JET TF-FT also contributes to the operator strategy to comply with the safety agency requirements for T management. Recent results on two major topics purification of tritiated water and development of the 3He method for the determination of the T concentration in waste drums are presented. Finally, this paper also presents some activities in preparation of the ILW for the pre-characterisation of marker tiles and the refurbishment of diagnostics for deposition characterisation.",
    keywords = "fusion technology, Tritium, erosion, deposition, waste, detritiation",
    author = "Dominique Barbier and Paola Batistoni and Paul Coad and Jari Likonen and {JET-EFDA collaborators}",
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    language = "English",
    volume = "86",
    pages = "615--618",
    journal = "Fusion Engineering and Design",
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    }

    Fusion technology activities at JET : Latest results. / JET-EFDA collaborators.

    In: Fusion Engineering and Design, Vol. 86, No. 6-8, 2011, p. 615-618.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - Fusion technology activities at JET

    T2 - Latest results

    AU - Barbier, Dominique

    AU - Batistoni, Paola

    AU - Coad, Paul

    AU - Likonen, Jari

    AU - JET-EFDA collaborators

    PY - 2011

    Y1 - 2011

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    KW - detritiation

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    JO - Fusion Engineering and Design

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    SN - 0920-3796

    IS - 6-8

    ER -