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).


August 26, 2015

Hyemin Kim successfully passed the MS exam. The topic of her MS study was "Static and transient analysis of Molten Salt Reactor Experiment using SERPENT-2/TRACE/PARCS codes". The experiment, completed 50 years ago, was partly re-analyzed with the modern codes to improve our understanding of the liquid-fuel reactor physics and to validate the computational tools to be used in design and safety demonstration of the future MSRs.


August 26, 2015

Jongsoo Choe successfully passed the MS exam. The topic of his MS study was "Empirical Decay Heat Correlations and Fission Products Behavior in MSRs". Molten Salt Reactors were simulated using Serpent and EQL0D to correlate decay heat power not only with reactor operation time and time after reactor shut-down, but also with efficiency of the on-line fission gas removal system. The results were compared with MSBR simulations from ORNL reports.


August 26, 2015

Benoit Soubelet successfully passed the MS exam. The topic of his MS study was "Time efficient fluid dynamics analysis of sodium fast reactor wire wrapped rod bundles". OpenFOAM, an open-source 3D CFD code, was applied for modeling of single and two-phase (air-water) flow in a hexagonal wire-wrapped bundle. The obtained results were benchmarked with respect to TRACE, a state-of-the-art 1D thermal-hydraulics code.


August 20, 2015

The November issue of Progress in Nuclear Energy publishes the first part of the paper on "The effectiveness of full actinide recycle as a nuclear waste management strategy when implemented over a limited timeframe -- Part I: Uranium fuel cycle" by B. A. Lindley (University of Cambridge), C. Fiorina (PSI), R. Gregg (NNL), F. Franceschini (Westinghouse), G. T. Parks (University of Cambridge), to which we contributed with the SFR analysis. http://dx.doi.org/10.1016/j.pnucene.2015.07.020


August 4, 2015

Anne-Laurene Panadero, PhD student from our groop, took part in the MeV summer school hold at Argonne National Laboratory on July 21-30, 2015. She was in Team 4 which won the prize for the best team report on "Future experimentation".


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. http://dx.doi.org/10.1016/j.anucene.2015.05.008


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. http://dx.doi.org/10.1016/j.pnucene.2014.09.016

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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