Benedikt Geiger is an Associate Professor in the Department of Nuclear Engineering and Engineering Physics at the University of Wisconsin – Madison. He serves as the principal investigator of the Helically Symmetric eXperiment (HSX), an optimized stellarator dedicated to exploring quasi-symmetry and investigating particle and heat transport in three-dimensional magnetic fields. In addition to his work on HSX, Prof. Geiger leads UW – Madison’s Turbulence and Spectroscopy Group, which operates advanced fluctuation diagnostics at major fusion facilities including the DIII-D tokamak, the W7-X stellarator, and the NSTX-U spherical tokamak.
Prof. Geiger earned his Ph.D. in 2013 through research conducted at the ASDEX Upgrade tokamak in Germany and was a group leader at the W7-X experiment prior to joining UW – Madison in 2019. His research interests span plasma spectroscopy, particle and heat transport, and the development and application of synthetic diagnostics. He is actively involved in the fusion research community, serving as Vice Chair of the National Stellarator Coordinating Committee (NSCC), a board member of the Transport Task Force (TTF) workshop, a member of the Coordinated Working Group Meeting (CWGM) organizing committee, and a board member of the International Stellarator and Heliotron Workshop (ISHW). Prof. Geiger is a recipient of the U.S. Department of Energy Early Career Award and was recently honored with a Grainger Institute for Engineering Professorship.