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Abstract

The B2-Eirene code package was used to investigate the density limit in ASDEX-Upgrade, both in the old, open divertor configuration and the new, more closed configuration. A combination of time-dependent and time-independent runs for discrete densitites were performed, with carbon produced self-consistently via physical and chemical sputtering. In addition some time-independent calculations were done without impurities to further elucidate the physics. Good agreement was found with the experiment. In addition the role of flow reversal in the carbon contamination of the main plasma arising from divertor generated sources were clarified.

Additional information

Authors: COSTER D P, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);BORASS K, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);SCHNIEDER R, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE);ASDEX-UPGRADE TEAM, Max-Planck-Institut fur Plasmaphysik, Garching bei Munchen (DE)
Bibliographic Reference: Article: Journal of Nuclear Materials, 266-269 (1999), 804-808
Record Number: 199910745 / Last updated on: 1999-05-21
Category: PUBLICATION
Original language: en
Available languages: en