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

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    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

    Keywords

    • plasma physics
    • tokamaks
    • plasma-material interactions

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    Aho-Mantila, L., Airila, M., Wischmeier, M., Krieger, K., Pugno, R., Rohde, V., Coster, D. P., Chankin, A. V., Neu, R., & Team, ASDEX. U. (2009). Modelling of 13CH4 Injection and Local Carbon Deposition at the Outer Divertor of ASDEX Upgrade. Physica Scripta, (T138), [014019]. https://doi.org/10.1088/0031-8949/2009/T138/014019