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

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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

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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.
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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.",
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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

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

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ER -