L-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET

ASDEX Upgrade Team, JET-EFDA collaborators

    Research output: Contribution to journalArticleScientificpeer-review

    15 Citations (Scopus)

    Abstract

    The presently favoured option for reactor power handling combines metallic plasma-facing components and impurity seeding to achieve highly radiative scrape-off layer and divertor plasmas. It is uncertain whether tolerable divertor power loads will be obtained in this scenario, necessitating the development of predictive modelling tools. L-mode experiments with N2 seeding have been conducted at both ASDEX Upgrade and JET for benchmarking the critically important impurity radiation models in edge fluid codes. In both machines, particle and power loads are observed to first reduce at the inner target, and only then at the outer target. The outer divertor cools down with increasing N seeding rate, evolving from low-recycling conditions to a regime with peak temperature of 8–10 eV in both devices. First SOLPS5.0 simulations of N2 seeding in ASDEX Upgrade geometry show a similar in–out asymmetry in the effect of impurity radiation when drifts are activated in the simulations.
    Original languageEnglish
    Pages (from-to)S321-S325
    Number of pages5
    JournalJournal of Nuclear Materials
    Volume438
    Issue numberSupplement
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed
    Event20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany
    Duration: 21 May 201225 May 2012

    Fingerprint

    inoculation
    Impurities
    Plasmas
    impurities
    Radiation
    Facings
    metallic plasmas
    Benchmarking
    power reactors
    Recycling
    radiation
    recycling
    Fluids
    Geometry
    simulation
    asymmetry
    fluids
    geometry
    Experiments
    Temperature

    Cite this

    ASDEX Upgrade Team ; JET-EFDA collaborators. / L-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET. In: Journal of Nuclear Materials. 2013 ; Vol. 438, No. Supplement. pp. S321-S325.
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    title = "L-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET",
    abstract = "The presently favoured option for reactor power handling combines metallic plasma-facing components and impurity seeding to achieve highly radiative scrape-off layer and divertor plasmas. It is uncertain whether tolerable divertor power loads will be obtained in this scenario, necessitating the development of predictive modelling tools. L-mode experiments with N2 seeding have been conducted at both ASDEX Upgrade and JET for benchmarking the critically important impurity radiation models in edge fluid codes. In both machines, particle and power loads are observed to first reduce at the inner target, and only then at the outer target. The outer divertor cools down with increasing N seeding rate, evolving from low-recycling conditions to a regime with peak temperature of 8–10 eV in both devices. First SOLPS5.0 simulations of N2 seeding in ASDEX Upgrade geometry show a similar in–out asymmetry in the effect of impurity radiation when drifts are activated in the simulations.",
    author = "Leena Aho-Mantila and M. Bernert and J.W. Coenen and R. Fischer and M. Lehnen and C. Lowry and S. Marsen and K. McCormick and H.W. M{\"u}ller and B. Sieglin and M.F. Stamp and M. Wischmeier and X. Bonnin and D.P. Coster and D. Reiter and S. Brezinsek and {ASDEX Upgrade Team} and {JET-EFDA collaborators}",
    year = "2013",
    doi = "10.1016/j.jnucmat.2013.01.059",
    language = "English",
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    L-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET. / ASDEX Upgrade Team; JET-EFDA collaborators.

    In: Journal of Nuclear Materials, Vol. 438, No. Supplement, 2013, p. S321-S325.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - L-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET

    AU - Aho-Mantila, Leena

    AU - Bernert, M.

    AU - Coenen, J.W.

    AU - Fischer, R.

    AU - Lehnen, M.

    AU - Lowry, C.

    AU - Marsen, S.

    AU - McCormick, K.

    AU - Müller, H.W.

    AU - Sieglin, B.

    AU - Stamp, M.F.

    AU - Wischmeier, M.

    AU - Bonnin, X.

    AU - Coster, D.P.

    AU - Reiter, D.

    AU - Brezinsek, S.

    AU - ASDEX Upgrade Team

    AU - JET-EFDA collaborators

    PY - 2013

    Y1 - 2013

    N2 - The presently favoured option for reactor power handling combines metallic plasma-facing components and impurity seeding to achieve highly radiative scrape-off layer and divertor plasmas. It is uncertain whether tolerable divertor power loads will be obtained in this scenario, necessitating the development of predictive modelling tools. L-mode experiments with N2 seeding have been conducted at both ASDEX Upgrade and JET for benchmarking the critically important impurity radiation models in edge fluid codes. In both machines, particle and power loads are observed to first reduce at the inner target, and only then at the outer target. The outer divertor cools down with increasing N seeding rate, evolving from low-recycling conditions to a regime with peak temperature of 8–10 eV in both devices. First SOLPS5.0 simulations of N2 seeding in ASDEX Upgrade geometry show a similar in–out asymmetry in the effect of impurity radiation when drifts are activated in the simulations.

    AB - The presently favoured option for reactor power handling combines metallic plasma-facing components and impurity seeding to achieve highly radiative scrape-off layer and divertor plasmas. It is uncertain whether tolerable divertor power loads will be obtained in this scenario, necessitating the development of predictive modelling tools. L-mode experiments with N2 seeding have been conducted at both ASDEX Upgrade and JET for benchmarking the critically important impurity radiation models in edge fluid codes. In both machines, particle and power loads are observed to first reduce at the inner target, and only then at the outer target. The outer divertor cools down with increasing N seeding rate, evolving from low-recycling conditions to a regime with peak temperature of 8–10 eV in both devices. First SOLPS5.0 simulations of N2 seeding in ASDEX Upgrade geometry show a similar in–out asymmetry in the effect of impurity radiation when drifts are activated in the simulations.

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    JF - Journal of Nuclear Materials

    SN - 0022-3115

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