Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade

Leena Aho-Mantila (Corresponding Author), Markus Airila, M. Wischmeier, K. Krieger, R. Pugno, V. Rohde, D.P. Coster, A.V. Chankin, R. Neu, ASDEX Upgrade Team

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Numerical modelling of 13CH4 injection into the outer divertor plasma of the full tungsten, vertical target of ASDEX Upgrade is presented. The SOLPS5.0 code package is used to calculate a realistic scrape-off layer plasma background corresponding to L-mode discharges in the attached divertor plasma regime. The ERO code is then used for detailed modelling of the hydrocarbon break-up, re-deposition and re-erosion processes. The deposition patterns observed at two different poloidal locations are shown to strongly reflect the cross-field gradients in divertor plasma density and temperature, as well as the local plasma collisionality. Experimental results with forward and reversed BT, accompanied by numerical modelling, also point towards a significant poloidal hydrocarbon E×B drift in the divertor region.
Original languageEnglish
Article number014019
JournalPhysica Scripta
Issue numberT138
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed
Event12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12 - Jülich, Germany
Duration: 11 May 200914 May 2009

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Injection
Carbon
Plasma
injection
carbon
Modeling
Hydrocarbons
Numerical Modeling
hydrocarbons
plasma layers
plasma temperature
plasma density
erosion
Breakup
Erosion
tungsten
gradients
Vertical
Gradient
Calculate

Keywords

  • plasma physics
  • tokamaks
  • plasma-material interactions

Cite this

Aho-Mantila, Leena ; Airila, Markus ; Wischmeier, M. ; Krieger, K. ; Pugno, R. ; Rohde, V. ; Coster, D.P. ; Chankin, A.V. ; Neu, R. ; Team, ASDEX Upgrade. / Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade. In: Physica Scripta. 2009 ; No. T138.
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title = "Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade",
abstract = "Numerical modelling of 13CH4 injection into the outer divertor plasma of the full tungsten, vertical target of ASDEX Upgrade is presented. The SOLPS5.0 code package is used to calculate a realistic scrape-off layer plasma background corresponding to L-mode discharges in the attached divertor plasma regime. The ERO code is then used for detailed modelling of the hydrocarbon break-up, re-deposition and re-erosion processes. The deposition patterns observed at two different poloidal locations are shown to strongly reflect the cross-field gradients in divertor plasma density and temperature, as well as the local plasma collisionality. Experimental results with forward and reversed BT, accompanied by numerical modelling, also point towards a significant poloidal hydrocarbon E×B drift in the divertor region.",
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author = "Leena Aho-Mantila and Markus Airila and M. Wischmeier and K. Krieger and R. Pugno and V. Rohde and D.P. Coster and A.V. Chankin and R. Neu and Team, {ASDEX Upgrade}",
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Aho-Mantila, L, Airila, M, Wischmeier, M, Krieger, K, Pugno, R, Rohde, V, Coster, DP, Chankin, AV, Neu, R & Team, ASDEXU 2009, 'Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade', Physica Scripta, no. T138, 014019. https://doi.org/10.1088/0031-8949/2009/T138/014019

Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade. / Aho-Mantila, Leena (Corresponding Author); Airila, Markus; Wischmeier, M.; Krieger, K.; Pugno, R.; Rohde, V.; Coster, D.P.; Chankin, A.V.; Neu, R.; Team, ASDEX Upgrade.

In: Physica Scripta, No. T138, 014019, 2009.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade

AU - Aho-Mantila, Leena

AU - Airila, Markus

AU - Wischmeier, M.

AU - Krieger, K.

AU - Pugno, R.

AU - Rohde, V.

AU - Coster, D.P.

AU - Chankin, A.V.

AU - Neu, R.

AU - Team, ASDEX Upgrade

PY - 2009

Y1 - 2009

N2 - Numerical modelling of 13CH4 injection into the outer divertor plasma of the full tungsten, vertical target of ASDEX Upgrade is presented. The SOLPS5.0 code package is used to calculate a realistic scrape-off layer plasma background corresponding to L-mode discharges in the attached divertor plasma regime. The ERO code is then used for detailed modelling of the hydrocarbon break-up, re-deposition and re-erosion processes. The deposition patterns observed at two different poloidal locations are shown to strongly reflect the cross-field gradients in divertor plasma density and temperature, as well as the local plasma collisionality. Experimental results with forward and reversed BT, accompanied by numerical modelling, also point towards a significant poloidal hydrocarbon E×B drift in the divertor region.

AB - Numerical modelling of 13CH4 injection into the outer divertor plasma of the full tungsten, vertical target of ASDEX Upgrade is presented. The SOLPS5.0 code package is used to calculate a realistic scrape-off layer plasma background corresponding to L-mode discharges in the attached divertor plasma regime. The ERO code is then used for detailed modelling of the hydrocarbon break-up, re-deposition and re-erosion processes. The deposition patterns observed at two different poloidal locations are shown to strongly reflect the cross-field gradients in divertor plasma density and temperature, as well as the local plasma collisionality. Experimental results with forward and reversed BT, accompanied by numerical modelling, also point towards a significant poloidal hydrocarbon E×B drift in the divertor region.

KW - plasma physics

KW - tokamaks

KW - plasma-material interactions

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