First Nitrogen-seeding Experiments in JET with the ITER-like Wall

M. Oberkofler, D. Douai, T. Dittmar, E. Joffrin, S. Brezinsek, J.W. Coenen, S. Grünhagen, A. Drenik, Leena Aho-Mantila, R. Neu, M. Stamp, A. Meigs, G. Calabro, U. Kruezi, A. Martin Rojo, B. Sieglin, M. Brix, S. Marsen, EFDA-JET contributors

    Research output: Contribution to journalArticle in a proceedings journalScientific

    45 Citations (Scopus)

    Abstract

    In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.
    Original languageEnglish
    Pages (from-to)S258-S261
    JournalJournal of Nuclear Materials
    Volume438
    Issue numberSupplement
    DOIs
    Publication statusPublished - 2013
    MoE publication typeB3 Non-refereed article in conference proceedings
    Event20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany
    Duration: 21 May 201225 May 2012

    Fingerprint

    inoculation
    Ammonia
    Nitrogen
    Gases
    nitrogen
    ammonia
    Discharge (fluid mechanics)
    Experiments
    Impurities
    Plasmas
    gases
    installing
    impurities

    Cite this

    Oberkofler, M., Douai, D., Dittmar, T., Joffrin, E., Brezinsek, S., Coenen, J. W., ... contributors, EFDA-JET. (2013). First Nitrogen-seeding Experiments in JET with the ITER-like Wall. Journal of Nuclear Materials, 438(Supplement), S258-S261. https://doi.org/10.1016/j.jnucmat.2013.01.041
    Oberkofler, M. ; Douai, D. ; Dittmar, T. ; Joffrin, E. ; Brezinsek, S. ; Coenen, J.W. ; Grünhagen, S. ; Drenik, A. ; Aho-Mantila, Leena ; Neu, R. ; Stamp, M. ; Meigs, A. ; Calabro, G. ; Kruezi, U. ; Martin Rojo, A. ; Sieglin, B. ; Brix, M. ; Marsen, S. ; contributors, EFDA-JET. / First Nitrogen-seeding Experiments in JET with the ITER-like Wall. In: Journal of Nuclear Materials. 2013 ; Vol. 438, No. Supplement. pp. S258-S261.
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    title = "First Nitrogen-seeding Experiments in JET with the ITER-like Wall",
    abstract = "In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.",
    author = "M. Oberkofler and D. Douai and T. Dittmar and E. Joffrin and S. Brezinsek and J.W. Coenen and S. Gr{\"u}nhagen and A. Drenik and Leena Aho-Mantila and R. Neu and M. Stamp and A. Meigs and G. Calabro and U. Kruezi and {Martin Rojo}, A. and B. Sieglin and M. Brix and S. Marsen and EFDA-JET contributors",
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    language = "English",
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    Oberkofler, M, Douai, D, Dittmar, T, Joffrin, E, Brezinsek, S, Coenen, JW, Grünhagen, S, Drenik, A, Aho-Mantila, L, Neu, R, Stamp, M, Meigs, A, Calabro, G, Kruezi, U, Martin Rojo, A, Sieglin, B, Brix, M, Marsen, S & contributors, EFDA-JET 2013, 'First Nitrogen-seeding Experiments in JET with the ITER-like Wall', Journal of Nuclear Materials, vol. 438, no. Supplement, pp. S258-S261. https://doi.org/10.1016/j.jnucmat.2013.01.041

    First Nitrogen-seeding Experiments in JET with the ITER-like Wall. / Oberkofler, M.; Douai, D.; Dittmar, T.; Joffrin, E.; Brezinsek, S.; Coenen, J.W.; Grünhagen, S.; Drenik, A.; Aho-Mantila, Leena; Neu, R.; Stamp, M.; Meigs, A.; Calabro, G.; Kruezi, U.; Martin Rojo, A.; Sieglin, B.; Brix, M.; Marsen, S.; contributors, EFDA-JET.

    In: Journal of Nuclear Materials, Vol. 438, No. Supplement, 2013, p. S258-S261.

    Research output: Contribution to journalArticle in a proceedings journalScientific

    TY - JOUR

    T1 - First Nitrogen-seeding Experiments in JET with the ITER-like Wall

    AU - Oberkofler, M.

    AU - Douai, D.

    AU - Dittmar, T.

    AU - Joffrin, E.

    AU - Brezinsek, S.

    AU - Coenen, J.W.

    AU - Grünhagen, S.

    AU - Drenik, A.

    AU - Aho-Mantila, Leena

    AU - Neu, R.

    AU - Stamp, M.

    AU - Meigs, A.

    AU - Calabro, G.

    AU - Kruezi, U.

    AU - Martin Rojo, A.

    AU - Sieglin, B.

    AU - Brix, M.

    AU - Marsen, S.

    AU - contributors, EFDA-JET

    PY - 2013

    Y1 - 2013

    N2 - In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.

    AB - In this contribution we present results from the first N2 seeding experiments in JET performed after installation of the ITER-like Wall. Gas balance measurements for seeded L-mode discharges indicate very strong N2 retention as well as a potential increase in D2 retention. The possible influence of ammonia production on this apparent retention is discussed. Plasma parameters and impurity content were monitored throughout the seeded discharges as well as during subsequent clean-up discharges. These experiments give first insight into phenomena related to the use of nitrogen as seeding gas in JET with the ITER-like Wall, such as ammonia production and nitrogen legacy.

    U2 - 10.1016/j.jnucmat.2013.01.041

    DO - 10.1016/j.jnucmat.2013.01.041

    M3 - Article in a proceedings journal

    VL - 438

    SP - S258-S261

    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

    SN - 0022-3115

    IS - Supplement

    ER -

    Oberkofler M, Douai D, Dittmar T, Joffrin E, Brezinsek S, Coenen JW et al. First Nitrogen-seeding Experiments in JET with the ITER-like Wall. Journal of Nuclear Materials. 2013;438(Supplement):S258-S261. https://doi.org/10.1016/j.jnucmat.2013.01.041