About
Florian Effenberg is a Staff Research Physicist at the Princeton Plasma Physics Laboratory (PPPL) and Principal Investigator of a DOE Fusion Energy Sciences (FES)–funded project on plasma–material interactions and wall conditioning in tokamak fusion devices. He serves as Deputy Research Coordinator for U.S. plasma–material interaction activities within the FES Tokamak Research portfolio, coordinating efforts across multiple facilities, including DIII-D, KSTAR, and other tokamak experiments. He is based at the DIII-D National Fusion Facility in San Diego, California. He received his Ph.D. in Nuclear Engineering and Engineering Physics from the University of Wisconsin–Madison.
Research Interests
Florian Effenberg’s research focuses on plasma–material interactions and their impact on plasma performance in tokamak fusion devices, with an emphasis on real-time wall conditioning and impurity control. His current work centers on the validation and integration of predictive models for low-Z material injection (e.g., boron and lithium) to enable reliable impurity suppression, plasma-facing component performance, and reactor-relevant power exhaust solutions.
He leads coordinated experimental and modeling efforts across multiple tokamak facilities, including DIII-D and KSTAR, to quantify impurity transport, coating formation, and surface evolution under reactor-relevant conditions. This work combines dedicated experiments with multi-scale modeling frameworks (e.g., EMC3-EIRENE, DIS/DUSTT, WallDYN3D, ERO2.0) to benchmark and validate impurity transport, material migration, and coating dynamics across devices, including prediction of impurity source localization and redistribution in ITER-relevant scenarios.
A central focus of his research is the development and validation of real-time surface conditioning techniques using boron, boron nitride, and lithium injection to improve wall conditions, reduce impurity sources, and support alternative, core–edge compatible power exhaust strategies.
His earlier work at the Wendelstein 7-X stellarator focused on three-dimensional edge plasma transport, impurity seeding, and radiative divertor operation, providing a foundation in 3D plasma–surface interaction physics and edge transport modeling.
More broadly, his research aims to establish validated, scenario-integrated plasma–material interaction solutions that can be deployed as active control tools in ITER and next-step fusion devices.
Publications
Research Funding
Principal Investigator, U.S. Department of Energy, Office of Fusion Energy Sciences (FES): Closing Gaps on Wall Conditioning and Real-Time Coating for ITER and Next-Step Fusion Devices, Sep 2025 – Feb 2030, Award: DE-SCL0000109