Global migration of 13C impurities in high-density L-mode plasmas in ASDEX Upgrade

Antti Hakola; Seppo Koivuranta; Jari Likonen; M. Groth; T. Kurki-Suonio; V. Lindholm; J. Miettunen; K. Krieger; M. Mayer; H.W. Müller; R. Neu; V. Rohde; P. Petersson; ASDEX Upgrade Team

doi:10.1016/j.jnucmat.2013.01.147

Global migration of ¹³C impurities in high-density L-mode plasmas in ASDEX Upgrade

Antti Hakola (Corresponding Author), Seppo Koivuranta, Jari Likonen, M. Groth, T. Kurki-Suonio, V. Lindholm, J. Miettunen, K. Krieger, M. Mayer, H.W. Müller, R. Neu, V. Rohde, P. Petersson, ASDEX Upgrade Team

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

We have studied the migration of ¹³C in ASDEX Upgrade after a global impurity injection experiment in 2011. The main chamber was observed to be the largest deposition region for carbon: almost 35% of the injected atoms end up there. Moreover, gaps between wall tiles account for surface densities which are comparable to those on the plasma-facing surfaces. SOLPS modeling of the experiment produced a set of background plasmas and poloidal flow profiles for simulating the transport of ¹³C with ASCOT; a match with measured deposition, however, required using an imposed flow profile. ASCOT reproduced the observed localized deposition at the outer midplane but work is needed to explain the measured deposition at the inner side of the torus and at the top of the vessel.

Original language	English
Pages (from-to)	S694-S697
Journal	Journal of Nuclear Materials
Volume	438
Issue number	Supplement
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.147
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed
Event	20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany Duration: 21 May 2012 → 25 May 2012

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Cite this

Hakola, A., Koivuranta, S., Likonen, J., Groth, M., Kurki-Suonio, T., Lindholm, V., Miettunen, J., Krieger, K., Mayer, M., Müller, H. W., Neu, R., Rohde, V., Petersson, P., & ASDEX Upgrade Team (2013). Global migration of ¹³C impurities in high-density L-mode plasmas in ASDEX Upgrade. Journal of Nuclear Materials, 438(Supplement), S694-S697. https://doi.org/10.1016/j.jnucmat.2013.01.147

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title = "Global migration of 13C impurities in high-density L-mode plasmas in ASDEX Upgrade",

abstract = "We have studied the migration of 13C in ASDEX Upgrade after a global impurity injection experiment in 2011. The main chamber was observed to be the largest deposition region for carbon: almost 35% of the injected atoms end up there. Moreover, gaps between wall tiles account for surface densities which are comparable to those on the plasma-facing surfaces. SOLPS modeling of the experiment produced a set of background plasmas and poloidal flow profiles for simulating the transport of 13C with ASCOT; a match with measured deposition, however, required using an imposed flow profile. ASCOT reproduced the observed localized deposition at the outer midplane but work is needed to explain the measured deposition at the inner side of the torus and at the top of the vessel.",

author = "Antti Hakola and Seppo Koivuranta and Jari Likonen and M. Groth and T. Kurki-Suonio and V. Lindholm and J. Miettunen and K. Krieger and M. Mayer and H.W. M{\"u}ller and R. Neu and V. Rohde and P. Petersson and {ASDEX Upgrade Team}",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.147",

language = "English",

volume = "438",

pages = "S694--S697",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

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Hakola, A, Koivuranta, S, Likonen, J, Groth, M, Kurki-Suonio, T, Lindholm, V, Miettunen, J, Krieger, K, Mayer, M, Müller, HW, Neu, R, Rohde, V, Petersson, P & ASDEX Upgrade Team 2013, 'Global migration of ¹³C impurities in high-density L-mode plasmas in ASDEX Upgrade', Journal of Nuclear Materials, vol. 438, no. Supplement, pp. S694-S697. https://doi.org/10.1016/j.jnucmat.2013.01.147

TY - JOUR

T1 - Global migration of 13C impurities in high-density L-mode plasmas in ASDEX Upgrade

AU - Hakola, Antti

AU - Koivuranta, Seppo

AU - Likonen, Jari

AU - Groth, M.

AU - Kurki-Suonio, T.

AU - Lindholm, V.

AU - Miettunen, J.

AU - Krieger, K.

AU - Mayer, M.

AU - Müller, H.W.

AU - Neu, R.

AU - Rohde, V.

AU - Petersson, P.

AU - ASDEX Upgrade Team

PY - 2013

Y1 - 2013

N2 - We have studied the migration of 13C in ASDEX Upgrade after a global impurity injection experiment in 2011. The main chamber was observed to be the largest deposition region for carbon: almost 35% of the injected atoms end up there. Moreover, gaps between wall tiles account for surface densities which are comparable to those on the plasma-facing surfaces. SOLPS modeling of the experiment produced a set of background plasmas and poloidal flow profiles for simulating the transport of 13C with ASCOT; a match with measured deposition, however, required using an imposed flow profile. ASCOT reproduced the observed localized deposition at the outer midplane but work is needed to explain the measured deposition at the inner side of the torus and at the top of the vessel.

AB - We have studied the migration of 13C in ASDEX Upgrade after a global impurity injection experiment in 2011. The main chamber was observed to be the largest deposition region for carbon: almost 35% of the injected atoms end up there. Moreover, gaps between wall tiles account for surface densities which are comparable to those on the plasma-facing surfaces. SOLPS modeling of the experiment produced a set of background plasmas and poloidal flow profiles for simulating the transport of 13C with ASCOT; a match with measured deposition, however, required using an imposed flow profile. ASCOT reproduced the observed localized deposition at the outer midplane but work is needed to explain the measured deposition at the inner side of the torus and at the top of the vessel.

U2 - 10.1016/j.jnucmat.2013.01.147

DO - 10.1016/j.jnucmat.2013.01.147

M3 - Article

SN - 0022-3115

VL - 438

SP - S694-S697

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - Supplement

T2 - 20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices

Y2 - 21 May 2012 through 25 May 2012