FAST: Generation-IV nuclear reactors with a fast neutron spectrum

We launched the project in 2002 and our current goals are
  • to study neutronics, thermal hydraulics and fuel behaviour of advanced fast-spectrum nuclear reactors using modern computational tools (TRACE/PARCS/FRED, Eranos/EQL3D, Serpent 2, OpenFOAM);
  • to evaluate safety of fast reactors considered for construction in Europe (in particular, ASTRID SFR);
  • to analyse innovative design solutions for Generation-IV Molten Salt Reactor;
  • to represent Switzerland internationally (GIF, IAEA, OECD, EURATOM);
  • to educate young researchers and students (in particular, via the ETHZ/EPFL Master of Science in Nuclear Engineering and EPFL PhD programs).


June 11, 2015

The November issue of Annals of Nuclear Energy publishes a paper on "A collision history-based approach to sensitivity/perturbation calculations in the continuous energy Monte Carlo code SERPENT" by M. Aufiero, A. Bidaud, M. Hursin, J. Leppänen, G. Palmiotti, S. Pelloni, P. Rubiolo, to which we contributed with ERANOS calculations.


June 8, 2015

The Expert and Policy Group meetings of the Generation-IV International Forum (GIF) as well as the third GIF Symposium were held on May 18-22, 2015 at Makuhari Messe in Chiba, Japan. We represented Switzerland at these meetings.


June 8, 2015

The August issue of Progress in Nuclear Energy publishes a paper on "Core neutronics characterization of the GFR2400 Gas Cooled Fast Reactor" by Z. Perko, S. Pelloni, K. Mikityuk, J. Krepel, M. Szieberth, G. Girardin, B. Vrban, J. Lüley, S. Cerba, M. Halasz, S. Feher, T. Reiss, J. L. Kloosterman, R. Stainsby, C. Poette, summarizing main results of the neutronic study performed in frame of the FP7 EURATOM GoFastR project.


May 21, 2014

ICAPP15: International Congress on Advances in Nuclear Power Plants "Nuclear Innovations for a Low-carbon Future" took place on May 3-6, 2015 in Nice, France. We contributed to 9 papers presented at the conference, 6 of them related to Sodium-cooled Fast Reactor and 3 -- to Molten Salt Reactor.


April 1, 2015

The August issue of Progress in Nuclear Energy publishes a paper on "A Geometric Multiscale modelling approach to the analysis of MSR plant dynamics" by Matteo Zanetti, Antonio Cammi, Carlo Fiorina, and Lelio Luzzi:


March 12, 2015

The four-year project "A Paradigm Shift in Reactor Safety with the Molten Salt Fast Reactor" (SAMOFAR) with 11 international partners including PSI was submitted in response to the first call for proposal of the Horizon 2020 program. The proposal was highly evaluated and granted by Euratom. The Swiss State Secretariat for Education, Research and Innovation is co-financing the participation of PSI. The FAST group contributes with the neutronics and transient analysis.


March 12, 2015

The very first issue of the ASME's Journal of Nuclear Engineering and Radiation Science publishes "Parametric Lattice Study of a Graphite-Moderated Molten Salt Reactor" by Boris Hombourger, Jiri Krepel, Konstantin Mikityuk and Andreas Pautz. The paper summarizes selected first results of the PhD study on small modular molten-salt reactor:


February 25, 2015

Matteo Zanetti, PhD student from Politecnico di Milano joins us for three-month internship to complete the work on development and implementation of the delayed neutron precursors transport in a molten salt reactor. This is the second attachment of Matteo to our group, the first one was in 2013.

More news in News Archive.

General Contact

Project Leader
Dr. Konstantin Mikityuk
Paul Scherrer Institute
5232 Villigen PSI
+41 56 310 2385

LRS Secretary
R. Ringele
+41 56 310 2592

LRS web page

Laboratory for Reactor Physics and Systems Behaviour