Jan-Peter Bähner

Postdoctoral Associate


Jan-Peter Bähner is a Postdoctoral associate permanently stationed off campus at the Wendelstein 7-X experiment in Germany. His research focuses on core turbulence in Wendelstein 7-X and its characterization with the Phase Contrast Imaging diagnostic.


MIT Plasma Science and Fusion Center, 2022-present

Postdoctoral Associate, project: Commissioning, operation and maintenance of the phase contrast imaging diagnostic at Wendelstein 7-X as well as core plasma turbulence studies


Max Planck Institute for Plasma Physics, Stellarator Dynamics and Transport, 2019-2022

Doctoral student, project: Core turbulence studies with the Phase Contrast Imaging diagnostic in Wendelstein 7-X


Fraunhofer-Institute for Laser Technology, Laser Measurement Technology and EUV Technology, 2017

Scientific Assistant, project: Development of a flow cytometer


Max Planck Institute for Plasma Physics, Stellarator Dynamics and Transport, 2016

Student Placement, project: Calibration of the High Efficiency XUV Overview Spectrometer (HEXOS)


2022 - PhD, Max Planck Institute for Plasma Physics and University of Greifswald, thesis: »Core plasma turbulence in Wendelstein 7-X«, Member of the International Helmholtz Graduate School for Plasma Physics

2018 - Master of Science in Physics, Imperial College London, thesis: »L-H transition studies in MAST«

2016 - Bachelor of Science in Physics, RWTH Aachen University, thesis: »Investigation of the erosion of powder-metallurgically produced tungsten in the linear plasma device PSI-2« at IEK-4, FZ Jülich



Full Scholarship by the German Academic Scholarship Foundation, 2017





J.-P. Bähner et al., Phase contrast imaging measurements and numerical simulations of turbulent density fluctuations in gas-fuelled ECRH discharges in Wendelstein 7-X, Journal of Plasma Physics 87 (3) 905870314, 2021, DOI 10.1017/S0022377821000635



J. A. Alcusón et al., Quantitative comparison of impurity transport in turbulence reduced and enhanced scenarios at Wendelstein 7-X, Nuclear Fusion 63 094002, 2023, DOI 10.1088/1741-4326/aceb76

S. Vaz Mendes et al., Broadband Alfvénic excitation correlated to turbulence level in the Wendelstein 7-X stellarator plasmas, Nuclear Fusion 63 096008, 2023, DOI 10.1088/1741-4326/ace53c

Th. Wegner et al., Overview of core impurity transport in the first divertor operation of Wendelstein 7-X, Journal of Plasma Physics 89 (3) 955890302, 2023, DOI 10.1017/S0022377823000417

S. K. Hansen et al., Development of a synthetic phase contrast imaging diagnostic for turbulence studies at Wendelstein 7-X, Plasma Physics and Controlled Fusion 64 (9) 095011, 2022, DOI 10.1088/1361-6587/ac7ad2

T. Sunn Pedersen et al., Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X, Nuclear Fusion 62 042022, 2022, DOI 10.1088/1741-4326/ac2cf5

M.N.A. Beurskens et al., Confinement in electron heated plasmas in Wendelstein 7-X and ASDEX Upgrade; the necessity to control turbulent transport, Nuclear Fusion 62 016015, 2021, DOI 10.1088/1741-4326/ac36f1

Z. Huang et al., The Wendelstein 7-X phase contrast imaging diagnostic, Journal of Instrumentation 16 (01) P01014, 2021, DOI 10.1088/1748-0221/16/01/P01014

T. Klinger et al., Overview of first Wendelstein 7-X high-performance operation, Nuclear Fusion 59 112004, 2019, DOI 10.1088/1741-4326/ab03a7

Y. Andrew et al. including J.-P. Bähner, H-Mode Power Threshold Studies on MAST, Plasma 2 (3) 328-338, 2019, DOI 10.3390/plasma2030024


Invited Talks

Plasma turbulence in the Wendelstein 7-X stellarator – a stumbling block on the path to stellarator fusion reactors, guest lecture, Department of Physics, Imperial College London, UK, Feb 2024Phase Contrast Imaging measurements of turbulent plasma density fluctuations in Wendelstein 7-X, seminar talk, Max-Planck-Institute for Dynamics and Self-Organization, Göttingen, Germany, Sep 2023