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.
|Publication status||Published - 2009|
|MoE publication type||A1 Journal article-refereed|
|Event||12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications, PFMC-12 - Jülich, Germany|
Duration: 11 May 2009 → 14 May 2009
- plasma physics
- plasma-material interactions
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), . https://doi.org/10.1088/0031-8949/2009/T138/014019