Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade

L. Aho-Mantila (Corresponding Author), X. Bonnin, D.P. Coster, C. Lowry, M. Wischmeier, S. Brezinsek, G. Federici, ASDEX Upgrade Team, JET-EFDA Contributors

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Effects of N-seeding in L-mode experiments in ASDEX Upgrade and JET are analysed numerically with the SOLPS5.0 code package. The modelling yields 3 qualitatively different radiative regimes with increasing N concentration, when initially attached outer divertor conditions are studied. The radiation pattern is observed to evolve asymmetrically, with radiation increasing first in the inner divertor, then in the outer divertor, and finally on closed field lines above the X-point. The properties of these radiative regimes are observed to be sensitive to cross-field drifts and they differ between the two devices. The modelled scaling of the divertor radiated power with the divertor neutral pressure is similar to an experimental scaling law for H-mode radiation. The same parametric dependencies are not observed in simulations without drifts.
Original languageEnglish
Pages (from-to)546-550
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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Aho-Mantila, L., Bonnin, X., Coster, D. P., Lowry, C., Wischmeier, M., Brezinsek, S., ... Contributors, JET-EFDA. (2015). Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade. Journal of Nuclear Materials, 463, 546-550. https://doi.org/10.1016/j.jnucmat.2014.11.049
Aho-Mantila, L. ; Bonnin, X. ; Coster, D.P. ; Lowry, C. ; Wischmeier, M. ; Brezinsek, S. ; Federici, G. ; Team, ASDEX Upgrade ; Contributors, JET-EFDA. / Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade. In: Journal of Nuclear Materials. 2015 ; Vol. 463. pp. 546-550.
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title = "Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade",
abstract = "Effects of N-seeding in L-mode experiments in ASDEX Upgrade and JET are analysed numerically with the SOLPS5.0 code package. The modelling yields 3 qualitatively different radiative regimes with increasing N concentration, when initially attached outer divertor conditions are studied. The radiation pattern is observed to evolve asymmetrically, with radiation increasing first in the inner divertor, then in the outer divertor, and finally on closed field lines above the X-point. The properties of these radiative regimes are observed to be sensitive to cross-field drifts and they differ between the two devices. The modelled scaling of the divertor radiated power with the divertor neutral pressure is similar to an experimental scaling law for H-mode radiation. The same parametric dependencies are not observed in simulations without drifts.",
author = "L. Aho-Mantila and X. Bonnin and D.P. Coster and C. Lowry and M. Wischmeier and S. Brezinsek and G. Federici and Team, {ASDEX Upgrade} and JET-EFDA Contributors",
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Aho-Mantila, L, Bonnin, X, Coster, DP, Lowry, C, Wischmeier, M, Brezinsek, S, Federici, G, Team, ASDEXU & Contributors, JET-EFDA 2015, 'Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade', Journal of Nuclear Materials, vol. 463, pp. 546-550. https://doi.org/10.1016/j.jnucmat.2014.11.049

Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade. / Aho-Mantila, L. (Corresponding Author); Bonnin, X.; Coster, D.P.; Lowry, C.; Wischmeier, M.; Brezinsek, S.; Federici, G.; Team, ASDEX Upgrade; Contributors, JET-EFDA.

In: Journal of Nuclear Materials, Vol. 463, 2015, p. 546-550.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Model-based radiation scalings for the ITER-like divertors of JET and ASDEX Upgrade

AU - Aho-Mantila, L.

AU - Bonnin, X.

AU - Coster, D.P.

AU - Lowry, C.

AU - Wischmeier, M.

AU - Brezinsek, S.

AU - Federici, G.

AU - Team, ASDEX Upgrade

AU - Contributors, JET-EFDA

PY - 2015

Y1 - 2015

N2 - Effects of N-seeding in L-mode experiments in ASDEX Upgrade and JET are analysed numerically with the SOLPS5.0 code package. The modelling yields 3 qualitatively different radiative regimes with increasing N concentration, when initially attached outer divertor conditions are studied. The radiation pattern is observed to evolve asymmetrically, with radiation increasing first in the inner divertor, then in the outer divertor, and finally on closed field lines above the X-point. The properties of these radiative regimes are observed to be sensitive to cross-field drifts and they differ between the two devices. The modelled scaling of the divertor radiated power with the divertor neutral pressure is similar to an experimental scaling law for H-mode radiation. The same parametric dependencies are not observed in simulations without drifts.

AB - Effects of N-seeding in L-mode experiments in ASDEX Upgrade and JET are analysed numerically with the SOLPS5.0 code package. The modelling yields 3 qualitatively different radiative regimes with increasing N concentration, when initially attached outer divertor conditions are studied. The radiation pattern is observed to evolve asymmetrically, with radiation increasing first in the inner divertor, then in the outer divertor, and finally on closed field lines above the X-point. The properties of these radiative regimes are observed to be sensitive to cross-field drifts and they differ between the two devices. The modelled scaling of the divertor radiated power with the divertor neutral pressure is similar to an experimental scaling law for H-mode radiation. The same parametric dependencies are not observed in simulations without drifts.

U2 - 10.1016/j.jnucmat.2014.11.049

DO - 10.1016/j.jnucmat.2014.11.049

M3 - Article

VL - 463

SP - 546

EP - 550

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

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