DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas

A. Xuereb, M. Groth (Corresponding Author), K. Krieger, O. Asunta, T. Kurki-Suonio, Jari Likonen, D. P. Coster, ASDEX Upgrade Team

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    Carbon transport and migration were studied experimentally and numerically in a high-density, low-confinement mode plasma in the ASDEX Upgrade tokamak. On the last day of plasma operation of the 2004–2005 experimental campaign, 13CH4 was injected into the vacuum vessel from the low field side midplane. A poloidal set of tiles was subsequently removed and analysed for 13C deposition. In this work the measured deposition profile is interpreted using the impurity transport code DIVIMP. The simulated poloidal distribution of 13C deviates significantly from the measured profile. The simulations indicate that 13C is promptly deposited at the wall in the vicinity of the injection port, and is transported to the low field side divertor plate predominately via the scrape-off layer. The B2-EIRENE plasma solution produce stagnant plasma flow in the main scrape-off layer, in contrast to measurements in ASDEX Upgrade and other tokamaks. This is the likely cause of the discrepancy between the measured and the calculated poloidal distribution of the 13C deposition. Key model parameters of DIVIMP were varied to determine their effect on the simulated deposition profile.
    Original languageEnglish
    Pages (from-to)228-233
    Number of pages6
    JournalJournal of Nuclear Materials
    Volume396
    Issue number2-3
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Plasmas
    profiles
    Plasma confinement
    Plasma flow
    tiles
    magnetohydrodynamic flow
    Tile
    vessels
    Carbon
    Vacuum
    Impurities
    injection
    impurities
    vacuum
    causes
    carbon
    simulation

    Cite this

    Xuereb, A., Groth, M., Krieger, K., Asunta, O., Kurki-Suonio, T., Likonen, J., ... ASDEX Upgrade Team (2010). DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas. Journal of Nuclear Materials, 396(2-3), 228-233. https://doi.org/10.1016/j.jnucmat.2009.11.014
    Xuereb, A. ; Groth, M. ; Krieger, K. ; Asunta, O. ; Kurki-Suonio, T. ; Likonen, Jari ; Coster, D. P. ; ASDEX Upgrade Team. / DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas. In: Journal of Nuclear Materials. 2010 ; Vol. 396, No. 2-3. pp. 228-233.
    @article{30fba22074c04edea456c4e95e3442f1,
    title = "DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas",
    abstract = "Carbon transport and migration were studied experimentally and numerically in a high-density, low-confinement mode plasma in the ASDEX Upgrade tokamak. On the last day of plasma operation of the 2004–2005 experimental campaign, 13CH4 was injected into the vacuum vessel from the low field side midplane. A poloidal set of tiles was subsequently removed and analysed for 13C deposition. In this work the measured deposition profile is interpreted using the impurity transport code DIVIMP. The simulated poloidal distribution of 13C deviates significantly from the measured profile. The simulations indicate that 13C is promptly deposited at the wall in the vicinity of the injection port, and is transported to the low field side divertor plate predominately via the scrape-off layer. The B2-EIRENE plasma solution produce stagnant plasma flow in the main scrape-off layer, in contrast to measurements in ASDEX Upgrade and other tokamaks. This is the likely cause of the discrepancy between the measured and the calculated poloidal distribution of the 13C deposition. Key model parameters of DIVIMP were varied to determine their effect on the simulated deposition profile.",
    author = "A. Xuereb and M. Groth and K. Krieger and O. Asunta and T. Kurki-Suonio and Jari Likonen and Coster, {D. P.} and {ASDEX Upgrade Team}",
    year = "2010",
    doi = "10.1016/j.jnucmat.2009.11.014",
    language = "English",
    volume = "396",
    pages = "228--233",
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    Xuereb, A, Groth, M, Krieger, K, Asunta, O, Kurki-Suonio, T, Likonen, J, Coster, DP & ASDEX Upgrade Team 2010, 'DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas', Journal of Nuclear Materials, vol. 396, no. 2-3, pp. 228-233. https://doi.org/10.1016/j.jnucmat.2009.11.014

    DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas. / Xuereb, A.; Groth, M. (Corresponding Author); Krieger, K.; Asunta, O.; Kurki-Suonio, T.; Likonen, Jari; Coster, D. P.; ASDEX Upgrade Team.

    In: Journal of Nuclear Materials, Vol. 396, No. 2-3, 2010, p. 228-233.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - DIVIMP-B2-EIRENE modelling of 13C migration and deposition in ASDEX Upgrade L-mode plasmas

    AU - Xuereb, A.

    AU - Groth, M.

    AU - Krieger, K.

    AU - Asunta, O.

    AU - Kurki-Suonio, T.

    AU - Likonen, Jari

    AU - Coster, D. P.

    AU - ASDEX Upgrade Team,

    PY - 2010

    Y1 - 2010

    N2 - Carbon transport and migration were studied experimentally and numerically in a high-density, low-confinement mode plasma in the ASDEX Upgrade tokamak. On the last day of plasma operation of the 2004–2005 experimental campaign, 13CH4 was injected into the vacuum vessel from the low field side midplane. A poloidal set of tiles was subsequently removed and analysed for 13C deposition. In this work the measured deposition profile is interpreted using the impurity transport code DIVIMP. The simulated poloidal distribution of 13C deviates significantly from the measured profile. The simulations indicate that 13C is promptly deposited at the wall in the vicinity of the injection port, and is transported to the low field side divertor plate predominately via the scrape-off layer. The B2-EIRENE plasma solution produce stagnant plasma flow in the main scrape-off layer, in contrast to measurements in ASDEX Upgrade and other tokamaks. This is the likely cause of the discrepancy between the measured and the calculated poloidal distribution of the 13C deposition. Key model parameters of DIVIMP were varied to determine their effect on the simulated deposition profile.

    AB - Carbon transport and migration were studied experimentally and numerically in a high-density, low-confinement mode plasma in the ASDEX Upgrade tokamak. On the last day of plasma operation of the 2004–2005 experimental campaign, 13CH4 was injected into the vacuum vessel from the low field side midplane. A poloidal set of tiles was subsequently removed and analysed for 13C deposition. In this work the measured deposition profile is interpreted using the impurity transport code DIVIMP. The simulated poloidal distribution of 13C deviates significantly from the measured profile. The simulations indicate that 13C is promptly deposited at the wall in the vicinity of the injection port, and is transported to the low field side divertor plate predominately via the scrape-off layer. The B2-EIRENE plasma solution produce stagnant plasma flow in the main scrape-off layer, in contrast to measurements in ASDEX Upgrade and other tokamaks. This is the likely cause of the discrepancy between the measured and the calculated poloidal distribution of the 13C deposition. Key model parameters of DIVIMP were varied to determine their effect on the simulated deposition profile.

    U2 - 10.1016/j.jnucmat.2009.11.014

    DO - 10.1016/j.jnucmat.2009.11.014

    M3 - Article

    VL - 396

    SP - 228

    EP - 233

    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

    SN - 0022-3115

    IS - 2-3

    ER -