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Abstract

A general deficiency when applying elaborate hydrodynamic models to the divertor and plasma edge region in tokamaks is the lack of reliable and well-founded data of (transverse) transport properties and boundary conditions, but also uncertainties concerning the basic equations themselves. Therefore, for realistic modelling of the plasma states at a specific machine like ASDEX-Upgrade and for reasonable extrapolations to other tokamaks (for example ITER) these data must be determined empirically by comparing code predictions with experimental results. The present paper is intended to provide some basis for fitting the uncertain quantities to the experimental findings in ASDEX-Upgrade. As an example of a possible approach to this problem, typical radial profiles for the electron density and the electron and ion temperature as well as some q-scans of the energy flux density on the divertor plates are presented for different transport laws and reasonably wide ranges of transport coefficients.

Additional information

Authors: KASTELEWICZ H, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);SCHNEIDER R, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);NEUHAUSER J, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);REITER D, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE);BRAAMS B, New York University, Courant Institute (US)
Bibliographic Reference: Article: Contributions to Plasma Physics, Vol. 32 (1992) No. 3-4, pp. 456-461
Record Number: 199310457 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en