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29 November 2021 to 6 December 2021
Virtual event
Europe/Vienna timezone
30 Nov - 3 Dec, 2021 Abstract submission open NOW

STATUS, PROSPECTS, AND BENCHMARKING OF THE MINERVA BAYESIAN MODELING FRAMEWORK AT WENDELSTEIN 7-X

2 Dec 2021, 15:30
15m
Virtual event

Virtual event

Regular Oral Synthetic Diagnostics, Integration, Verification and Validation Thursday 2 Dec

Speaker

Dr Andreas Langenberg (Max-Planck-Institut für Plasmaphysik,17491 Greifswald, Germany)

Description

Over the last years, Bayesian Analysis became a standard method in plasma physics for a common plasma parameter profile determination and mathematical correct error analysis [1-3], evaluating data measured by various diagnostics.
This paper gives an overview of established as well as recently deployed physics models within the Minerva Bayesian analysis framework [2] for a wide range of different diagnostics operated at Wendelstein 7-X, such as two X-ray imaging spectrometers (XICS) [4], a charge exchange recombination spectroscopy diagnostic (CXRS) [5], an X-ray tomography system (XMCTS) [6,7], a Thomson scattering (TS) [8], an electron cyclotron emission (ECE) [9], and an effective charge measurement (Zeff) [10] diagnostic.
Upon individual examples, benchmarking of evaluated plasma parameters in cross comparison for different diagnostics, e.g. Te , Ti , and nAr observed with XICS, CXRS, and TS will be discussed as well as prospects for the application of artificial neural networks for fast data analysis of complex physics models.

[1] R. Fischer, L. Giannone, J. Illerha et al. Fusion Sci. Technol., 76 (2020)
[2] J. Svensson, A. Werner, Proceedings IEEE Workshop on Intelligent Signal Processing WISP (2007)
[3] L.M. Reusch, M.D. Nornberg, J.A. Goetz et al. Rev. Sci. Instrum. 89 (2018)
[4] A. Langenberg, N. Pablant, Th. Wegner et al. Rev. Sci. Instrum. 89 (2018)
[5] O. Ford, L. Vanó, A. Alonso et al. Rev. Sci. Instrum. 91 (2020)
[6] C. Brandt, J. Schilling, H. Thomsen et al. Plasma Phys. Control. Fusion 62 (2020)
[7] J. Schilling, H. Thomsen, C. Brandt et al. Plasma Phys. Contol. Fusion 63 (2021)
[8] S.A. Bozhenkov, M. Beurskens, A. Dal Molin et al. JINST 12 (2017)
[9] U. Hoefel, M. Hirsch, S. Kwak et al. Rev. Sci. Instrum. 90 (2019)
[10] A. Pavone, U. Hergenhahn, M. Krychowiak et al. JINST 14 (2019)

Country or International Organisation Germany
Affiliation Max-Planck-Institute for Plasma Physics

Primary authors

Dr Andreas Langenberg (Max-Planck-Institut für Plasmaphysik,17491 Greifswald, Germany) Dr Jakob Svensson (Max-Planck Institute for Plasma Physics) Andrea Pavone (Max-Planck Institute for Plasma Physics) Dr Sehyun Kwak (Max-Planck Institute for Plasma Physics) Dr Udo Höfel (Max-Planck-Institut für Plasmaphysik) Dr Oliver Ford Dr Christian Brandt (Max-Planck-Institut für Plasmaphysik) Mr Jonathan Schilling (Max-Planck-Institut für Plasmaphysik) Dr Henning Thomsen (Max-Planck-Institut für Plasmaphysik)

Presentation materials