Erlangen 2018 – scientific programme
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P: Fachverband Plasmaphysik
P 12: Magnetic Confinement - Poster
P 12.11: Poster
Tuesday, March 6, 2018, 16:15–18:15, Redoutensaal
Magnetic diagnostics integration in the Minerva framework for the Wendelstein 7-X stellarator — •Jonathan Schilling1, Tamara Andreeva1, Oliver Ford1, Joachim Geiger1, Ulrich Neuner1, Kian Rahbarnia1, Jakob Svensson1, Henning Thomsen1, Samuel Lazerson2, John Schmitt3, and The W7-X Team1 — 1Max Planck Institute for Plasma Physics, Wendelsteinstr. 1, 17491 Greifswald, Germany — 2Princeton Plasma Physics Laboratory, New Jersey, USA — 3Auburn University, Alabama, USA
For the latest experimental campaign of the Wendelstein 7-X stellarator, automated preanalysis of the magnetic diagnostics data was implemented in the Bayesian data analysis framework Minerva. We present first results of a simplified reconstruction of the toroidal current profile as well as a comparison of the experimental results with theoretical predictions based on equilibrium calculations using the VMEC code. A prediction of the measured signals is computed based on the equilibrium magnetic field within the framework and compared to results from established codes as DIAGNO and Extender. In this contribution the new implementation of the magnetic diagnostics response prediction in the context of the Minerva framework is presented. Benchmarks in terms of speed and accuracy against existing codes are presented and optimization towards sufficiently fast prediction for equilibrium reconstructions during the experiment program is assessed.