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Modeling of tungsten transport in the SOL for sources at the central column of ASDEX Upgrade using DIVIMP

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Geier,  A.
Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society;

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Krieger,  K.
Material Research (MF), Max Planck Institute for Plasma Physics, Max Planck Society;

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Rohde,  V.
Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society;

ASDEX Upgrade Team, 
Max Planck Institute for Plasma Physics, Max Planck Society;

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Citation

Geier, A., Krieger, K., Elder, J. D., Pugno, R., Rohde, V., & ASDEX Upgrade Team (2003). Modeling of tungsten transport in the SOL for sources at the central column of ASDEX Upgrade using DIVIMP. Journal of Nuclear Materials, 313-316, 1216-1220. doi:10.1016/S0022-3115(02)01519-2.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-233F-2
Abstract
Tungsten erosion at the central column and tungsten transport in the scrape-off layer of ASDEX Upgrade have been modeled with the 2D Monte-Carlo impurity transport code DIVIMP. The main objectives were the reproduction of the erosion and migration patterns that are observed experimentally. This was accomplished by implementing a new erosion routine which allows to calculate the tungsten source term at the central column and subsequently the poloidal distribution of the W density. First results on W transport in the boundary plasma as well as erosion and migration patterns of W are discussed in relation to different models of the plasma in front of the central column. A comparison between measured and modeled deposition of W in the divertor already shows satisfactory qualitative agreement.