Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling

D. Borodin, M.F. Stamp, S. Brezinsek, C. Björkas, J. Miettunen, A. Kirschner, D. Matveev, M. Groth, Markus Airila, S. Lisgo, S. Marsen, V. Philipps, JET-EFDA contributors

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)

    Abstract

    Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50% D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.
    Original languageEnglish
    Article number014057
    Number of pages6
    JournalPhysica Scripta
    Issue numberT159
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Sputtering
    3D Modeling
    beryllium
    sputtering
    Lifetime
    Plasma
    life (durability)
    Prediction
    Light Intensity
    estimates
    predictions
    Estimate
    luminous intensity
    Three-dimensional
    Experiment
    Observation
    Simulation
    simulation
    Model

    Cite this

    Borodin, D., Stamp, M. F., Brezinsek, S., Björkas, C., Miettunen, J., Kirschner, A., ... contributors, JET-EFDA. (2014). Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling. Physica Scripta, (T159), [014057]. https://doi.org/10.1088/0031-8949/2014/T159/014057
    Borodin, D. ; Stamp, M.F. ; Brezinsek, S. ; Björkas, C. ; Miettunen, J. ; Kirschner, A. ; Matveev, D. ; Groth, M. ; Airila, Markus ; Lisgo, S. ; Marsen, S. ; Philipps, V. ; contributors, JET-EFDA. / Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling. In: Physica Scripta. 2014 ; No. T159.
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    title = "Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling",
    abstract = "Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50{\%} D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.",
    author = "D. Borodin and M.F. Stamp and S. Brezinsek and C. Bj{\"o}rkas and J. Miettunen and A. Kirschner and D. Matveev and M. Groth and Markus Airila and S. Lisgo and S. Marsen and V. Philipps and JET-EFDA contributors",
    year = "2014",
    doi = "10.1088/0031-8949/2014/T159/014057",
    language = "English",
    journal = "Physica Scripta",
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    Borodin, D, Stamp, MF, Brezinsek, S, Björkas, C, Miettunen, J, Kirschner, A, Matveev, D, Groth, M, Airila, M, Lisgo, S, Marsen, S, Philipps, V & contributors, JET-EFDA 2014, 'Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling', Physica Scripta, no. T159, 014057. https://doi.org/10.1088/0031-8949/2014/T159/014057

    Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling. / Borodin, D.; Stamp, M.F.; Brezinsek, S.; Björkas, C.; Miettunen, J.; Kirschner, A.; Matveev, D.; Groth, M.; Airila, Markus; Lisgo, S.; Marsen, S.; Philipps, V.; contributors, JET-EFDA.

    In: Physica Scripta, No. T159, 014057, 2014.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling

    AU - Borodin, D.

    AU - Stamp, M.F.

    AU - Brezinsek, S.

    AU - Björkas, C.

    AU - Miettunen, J.

    AU - Kirschner, A.

    AU - Matveev, D.

    AU - Groth, M.

    AU - Airila, Markus

    AU - Lisgo, S.

    AU - Marsen, S.

    AU - Philipps, V.

    AU - contributors, JET-EFDA

    PY - 2014

    Y1 - 2014

    N2 - Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50% D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.

    AB - Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50% D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.

    U2 - 10.1088/0031-8949/2014/T159/014057

    DO - 10.1088/0031-8949/2014/T159/014057

    M3 - Article

    JO - Physica Scripta

    JF - Physica Scripta

    SN - 0031-8949

    IS - T159

    M1 - 014057

    ER -