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Max-Planck-Institut für Plasmaphysik, EURATOM Association,
D-85740 Garching b. München, Germany
W. von der Linden
Institut für Theoretische Physik, Technische Universität Graz,
A-8010 Graz, Austria
Abstract. Energy confinement
in W7-AS has been analyzed in terms of dimensionally exact form free functions
employing Bayesian probability theory. The confinement function was set up as a
linear combination of dimensionally exact power law terms as already proposed
very early by Connor and Taylor. Generation of this expansion basis is
dictated by the basic plasma model which one assumes. Based upon data
accumulated in W7-AS, which contains the energy content for a wide variety
of variable settings, predictions for single variable scans are made. The
scaling functions for density and power scans, respectively, are in
quantitative agreement with data collected in W7-AS. The result of a single
variable scan is therefore already hidden in the data obtained for arbitrary
variable choices and can be extracted from the latter by a proper data
analysis. Furthermore, the optimal model for the description of the
global transport in W7-AS is identified as the collisional low beta
kinetic model.
IAEA 2001
