Berlin 2005 – wissenschaftliches Programm
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P: Plasmaphysik
P 14: Poster: Niedertemperaturplasmen / Plasmatechnologie 6, Diagnostik 4
P 14.20: Poster
Samstag, 5. März 2005, 14:45–16:45, Poster HU
Physical Diagnostic Design and Optimization — •Heiko Dreier1, Andreas Dinklage1, Rainer Fischer2, Hans J. Hartfuß1, Matthias Hirsch1, and Ekkehard Pasch1 — 1Max–Planck–Institut fuer Plasmaphysik, Teilinstitut Greifswald, Wendelsteinstr. 1, D–17491 Greifswald — 2Max–Planck–Institut fuer Plasmaphysik, Boltzmannstr. 2, D–85748 Garching
In this work concepts for the design and optimization of diagnostic units for fusion plasmas will be presented. Background of this study is the preparation for the measurement of plasma parameters for Wendelstein 7–X. Depending on the physics scenario, different goals for the design can be defined, such as the reconstruction of spatial dependencies itself (e.g. density profiles) or the measurement of gradients (e.g. for bootstrap current modelling). Hence, the physical issue to be treated leads to different figures of merit for optimization. Technically, this information maximization with respect to expected data is performed within Bayesian decision theory. First studies on Thomson scattering and interferometry are subjects of the present work. Optimization parameters are, e.g., the number of sightlines and their respective geometry. Finally, it is planned to combine different diagnostics in order to arrive at meta–diagnostics benefitting from the respective strength of complementary measurements.
[1] R. Fischer, A. Dinklage, E. Pasch, Plasma Phys. Control. Fusion 45, 1095 (2003)