Modelling of 13CH4 injection and local carbon deposition at the outer divertor of ASDEX Upgrade

L. Aho-Mantila; M. I. Airila; M. Wischmeier; K. Krieger; R. Pugno; D. P. Coster; A. V. Chankin; R. Neu; V. Rohde

doi:10.1088/0031-8949/2009/T138/014019

Modelling of ¹³CH₄ injection and local carbon deposition at the outer divertor of ASDEX Upgrade

L. Aho-Mantila, M. I. Airila, M. Wischmeier, K. Krieger, R. Pugno, D. P. Coster, A. V. Chankin, R. Neu, V. Rohde

Research output: Contribution to journal › Conference article › peer-review

9 Scopus citations

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 B_T, accompanied by numerical modelling, also point towards a significant poloidal hydrocarbon E×B drift in the divertor region.

Original language	English
Article number	14019
Journal	Physica Scripta
Volume	T138
DOIs	https://doi.org/10.1088/0031-8949/2009/T138/014019
State	Published - 2009
Externally published	Yes
Event	12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12 - Julich, Germany Duration: 11 May 2009 → 14 May 2009

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10.1088/0031-8949/2009/T138/014019

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@article{1807b97452174746a82ce54b2471fae3,

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.",

author = "L. Aho-Mantila and Airila, {M. I.} and M. Wischmeier and K. Krieger and R. Pugno and Coster, {D. P.} and Chankin, {A. V.} and R. Neu and V. Rohde",

year = "2009",

doi = "10.1088/0031-8949/2009/T138/014019",

language = "English",

volume = "T138",

journal = "Physica Scripta",

issn = "0281-1847",

publisher = "Institute of Physics",

note = "12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12 ; Conference date: 11-05-2009 Through 14-05-2009",

}

TY - JOUR

T1 - Modelling of 13CH4 injection and local carbon deposition at the outer divertor of ASDEX Upgrade

AU - Aho-Mantila, L.

AU - Airila, M. I.

AU - Wischmeier, M.

AU - Krieger, K.

AU - Pugno, R.

AU - Coster, D. P.

AU - Chankin, A. V.

AU - Neu, R.

AU - Rohde, V.

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.

UR - http://www.scopus.com/inward/record.url?scp=77953897405&partnerID=8YFLogxK

U2 - 10.1088/0031-8949/2009/T138/014019

DO - 10.1088/0031-8949/2009/T138/014019

M3 - Conference article

AN - SCOPUS:77953897405

SN - 0281-1847

VL - T138

JO - Physica Scripta

JF - Physica Scripta

M1 - 14019

T2 - 12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12

Y2 - 11 May 2009 through 14 May 2009

ER -

Modelling of ¹³CH₄ injection and local carbon deposition at the outer divertor of ASDEX Upgrade

Abstract

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