Florian M. Laggner

Assistant Professor of Nuclear Engineering

  • +1 (919) 51 33603
  • 3152 Burlington Engineering Labs

Dr. Laggner received his Ph.D. degree from TU Wien in 2017, studying the inter-edge-localized mode (ELM) evolution of the pedestal structure at the ASDEX Upgrade tokamak. He joined the Plasma Control Group at Princeton University as a Post-Doctoral Researcher, to implement a real-time Thomson scattering diagnostic at National Spherical Torus Experiment-Upgrade and the Large Helical Device. In 2019, he transitioned to the Princeton Plasma Physics Laboratory, to install a prototype Lyman-α diagnostic called LLAMA at the DIII-D National Fusion Facility, which enables the measurement of edge neutral density profiles. In 2022, Dr. Laggner joined NC State Nuclear Engineering as Assistant Professor, establishing the FPAC LAB.

Dr. Laggner, an APS Career mentoring fellow, has been an advisor and a mentor for numerous students at undergraduate and graduate level, guiding research projects and training the next generation of scientists and engineers.


Ph.D. 2017

Technical Sciences

Technische Universität Wien

M.S. 2013

Technical Physics

Technische Universität Wien

B.S. 2011

Technical Physics

Technische Universität Wien

Research Description

Dr. Laggner is working on high temperature plasmas in magnetic confinement fusion devices, called tokamaks. He is an expert in plasma edge physics and plasma diagnostics. His research focuses on the H-mode pedestal with a particular emphasis on the pedestal profile structure, its stability and the ionization source of neutral particles that enter the confined plasma. Moreover, Dr. Laggner is interested in developing and characterizing technological solutions for auxiliary systems such as plasma diagnostics that can sustain the harsh environment of a fusion pilot plant.


Broadening of the Divertor Heat Flux Profile in High Confinement Tokamak Fusion Plasmas with Edge Pedestals Limited by Turbulence in DIII-D
Ernst, D. R., Bortolon, A., Chang, C. S., Ku, S., Scotti, F., Wang, H. Q., … Watkins, J. (2024), PHYSICAL REVIEW LETTERS, 132(23). https://doi.org/10.1103/PhysRevLett.132.235102
Pedestal main ion particle transport inference through gas puff modulation with experimental source measurements
Rosenthal, A. M., Hughes, J. W., Laggner, F. M., Odstrcil, T., Bortolon, A., Wilks, T. M., … Sciortino, F. (2024), NUCLEAR FUSION, 64(3). https://doi.org/10.1088/1741-4326/ad17f5
Progress towards edge-localized mode suppression via magnetic perturbations in hydrogen plasmas
Leuthold, N., Suttrop, W., Paz-Soldan, C., Dunne, M. G., Fischer, R., Hinson, E., … Willensdorfer, M. (2024), NUCLEAR FUSION, 64(2). https://doi.org/10.1088/1741-4326/ad1625
Reconstruction and interpretation of ionization asymmetry in magnetic confinement via synthetic diagnostics
Wilkie, G. J., Laggner, F., Hager, R., Rosenthal, A., Ku, S.-h., Churchill, R. M., … Bortolon, A. (2024), NUCLEAR FUSION, 64(8). https://doi.org/10.1088/1741-4326/ad556b
The role of isotope mass on neutral fueling and density pedestal structure in the DIII-D tokamak
Chaban, R. A., Mordijck, S., Rosenthal, A. M., Bortolon, A., Hughes, J. W., Knolker, M., … Wilks, T. M. (2024), NUCLEAR FUSION, 64(4). https://doi.org/10.1088/1741-4326/ad2113
In-situ coating of silicon-rich films on tokamak plasma-facing components with real-time Si material injection
Effenberg, F., Abe, S., Sinclair, G., Abrams, T., Bortolon, A., Wampler, W. R., … Wilcox, R. S. (2023), NUCLEAR FUSION, 63(10). https://doi.org/10.1088/1741-4326/acee98
Inference of main ion particle transport coefficients with experimentally constrained neutral ionization during edge localized mode recovery on DIII-D
Rosenthal, A. M., Hughes, J. W., Laggner, F. M., Odstrcil, T., Bortolon, A., Wilks, T. M., & Sciortino, F. (2023), NUCLEAR FUSION, 63(4). https://doi.org/10.1088/1741-4326/acb95a
Micro-tearing mode dominated electron heat transport in DIII-D H-mode pedestal
Chen, J., Jian, X., Brower, D. L., Haskey, S. R., Yan, Z., Groebner, R., … Banerjee, S. (2023), Nuclear Fusion. https://doi.org/10.1088/1741-4326/accafb
Tungsten erosion and divertor leakage from the DIII-D SAS-VW tungsten-coated divertor in experiments with neon gas seeding
Parsons, M. S., Mateja, J. D., Messer, S. H., Abrams, T., Allain, J. P., Bortolon, A., … Wilcox, R. S. (2023), NUCLEAR MATERIALS AND ENERGY, 37. https://doi.org/10.1016/j.nme.2023.101520
Wall conditioning effects and boron migration during boron powder injection in ASDEX Upgrade
Krieger, K., Balden, M., Bortolon, A., Dux, R., Griener, M., Hegele, K., … Team, A. S. D. E. X. U. (2023), NUCLEAR MATERIALS AND ENERGY, 34. https://doi.org/10.1016/j.nme.2023.101374

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