Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade

Leena Aho-Mantila (Corresponding Author), M. Wischmeier, K. Krieger, V. Rohde, H.W. Müller, D.P. Coster, M. Groth, A. Kirschner, R. Neu, S. Potzel, B. Sieglin, E. Wolfrum, ASDEX Upgrade Team

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Reversal of the toroidal magnetic field and plasma current is observed to considerably change the re-deposition of 13C injected into the outer divertor scrape-off layer of ASDEX Upgrade. In forward field low-density L-mode plasmas, 24–32% of injected carbon is found locally re-deposited. The deposition tails are aligned toroidally both upstream and downstream of the exit holes and indicate transport towards the strike point. In reversed field with similar main plasma parameters, the re-deposition efficiency is a factor of 2 smaller. The deposition is more localized and shows transport towards the outer scrape-off layer. Numerical modelling with the SOLPS5.0 and ERO codes shows that these differences in 13C deposition can be attributed to the combination of the E × B drift reversal directly influencing the transport of carbon and changes in local plasma conditions due to the drift reversal.
Original languageEnglish
Pages (from-to)S231-S234
Number of pages4
JournalJournal of Nuclear Materials
Volume415
Issue number1, Supplement
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed
Event19th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, PSI-19 - San Diego, United States
Duration: 24 May 201028 May 2010

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Fusion reactor divertors
Carbon
carbon
Plasmas
plasma currents
upstream
Magnetic fields
magnetic fields

Cite this

Aho-Mantila, L., Wischmeier, M., Krieger, K., Rohde, V., Müller, H. W., Coster, D. P., ... ASDEX Upgrade Team (2011). Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade. Journal of Nuclear Materials, 415(1, Supplement), S231-S234. https://doi.org/10.1016/j.jnucmat.2010.10.080
Aho-Mantila, Leena ; Wischmeier, M. ; Krieger, K. ; Rohde, V. ; Müller, H.W. ; Coster, D.P. ; Groth, M. ; Kirschner, A. ; Neu, R. ; Potzel, S. ; Sieglin, B. ; Wolfrum, E. ; ASDEX Upgrade Team. / Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade. In: Journal of Nuclear Materials. 2011 ; Vol. 415, No. 1, Supplement. pp. S231-S234.
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title = "Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade",
abstract = "Reversal of the toroidal magnetic field and plasma current is observed to considerably change the re-deposition of 13C injected into the outer divertor scrape-off layer of ASDEX Upgrade. In forward field low-density L-mode plasmas, 24–32{\%} of injected carbon is found locally re-deposited. The deposition tails are aligned toroidally both upstream and downstream of the exit holes and indicate transport towards the strike point. In reversed field with similar main plasma parameters, the re-deposition efficiency is a factor of 2 smaller. The deposition is more localized and shows transport towards the outer scrape-off layer. Numerical modelling with the SOLPS5.0 and ERO codes shows that these differences in 13C deposition can be attributed to the combination of the E × B drift reversal directly influencing the transport of carbon and changes in local plasma conditions due to the drift reversal.",
author = "Leena Aho-Mantila and M. Wischmeier and K. Krieger and V. Rohde and H.W. M{\"u}ller and D.P. Coster and M. Groth and A. Kirschner and R. Neu and S. Potzel and B. Sieglin and E. Wolfrum and {ASDEX Upgrade Team}",
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Aho-Mantila, L, Wischmeier, M, Krieger, K, Rohde, V, Müller, HW, Coster, DP, Groth, M, Kirschner, A, Neu, R, Potzel, S, Sieglin, B, Wolfrum, E & ASDEX Upgrade Team 2011, 'Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade', Journal of Nuclear Materials, vol. 415, no. 1, Supplement, pp. S231-S234. https://doi.org/10.1016/j.jnucmat.2010.10.080

Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade. / Aho-Mantila, Leena (Corresponding Author); Wischmeier, M.; Krieger, K.; Rohde, V.; Müller, H.W.; Coster, D.P.; Groth, M.; Kirschner, A.; Neu, R.; Potzel, S.; Sieglin, B.; Wolfrum, E.; ASDEX Upgrade Team.

In: Journal of Nuclear Materials, Vol. 415, No. 1, Supplement, 2011, p. S231-S234.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of E × B driven transport on the deposition of carbon in the outer divertor of ASDEX Upgrade

AU - Aho-Mantila, Leena

AU - Wischmeier, M.

AU - Krieger, K.

AU - Rohde, V.

AU - Müller, H.W.

AU - Coster, D.P.

AU - Groth, M.

AU - Kirschner, A.

AU - Neu, R.

AU - Potzel, S.

AU - Sieglin, B.

AU - Wolfrum, E.

AU - ASDEX Upgrade Team

PY - 2011

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AB - Reversal of the toroidal magnetic field and plasma current is observed to considerably change the re-deposition of 13C injected into the outer divertor scrape-off layer of ASDEX Upgrade. In forward field low-density L-mode plasmas, 24–32% of injected carbon is found locally re-deposited. The deposition tails are aligned toroidally both upstream and downstream of the exit holes and indicate transport towards the strike point. In reversed field with similar main plasma parameters, the re-deposition efficiency is a factor of 2 smaller. The deposition is more localized and shows transport towards the outer scrape-off layer. Numerical modelling with the SOLPS5.0 and ERO codes shows that these differences in 13C deposition can be attributed to the combination of the E × B drift reversal directly influencing the transport of carbon and changes in local plasma conditions due to the drift reversal.

U2 - 10.1016/j.jnucmat.2010.10.080

DO - 10.1016/j.jnucmat.2010.10.080

M3 - Article

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SP - S231-S234

JO - Journal of Nuclear Materials

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SN - 0022-3115

IS - 1, Supplement

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