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 reactors;
  • to evaluate safety of fast reactors considered for construction in Europe;
  • to study different design solutions for Generation-IV Molten Salt Reactor;
  • to represent Switzerland internationally;
  • to educate young researchers and students.


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.


February 23, 2015

Alzbeta Bednarova, MS student from Czech Technical University in Prague, joins us for six months to make her master thesis on modeling of Superphenix fast reactor ocre using the FAST code system. The study is supported by the PSI grant for the summer student.


December 1, 2014

Evzen Losa, PhD student from Czech Technical University in Prague, joins us for nine months to work on 3D modeling of closed equilibrium fuel cycle in advanced fast reactors as well as in VVER, using our calculational tools. The study is supported by the IAEA Fellowship. This is already the second attachment of Evzen, the first one was in 2012.


November 24, 2014

Thanks to Chinese colleagues who attached audio to their paper on sodium boiling tests published in Experimental Thermal and Fluid Science ( we can listen to the sound of the sodium boiling: audio(mp3).


November 12, 2014

Boris Hombourger making his PhD study on designing a small modular molten salt reactor successfully passed the candidacy exam at EPFL.

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October 15, 2014

Four students from a joint ETHZ-EPFL MS program in Nuclear Engineering ( joined our group to make their semester projects (and following up MS theses next semester). Two of them will work on topics related to sodium boiling and other two -- on neutronics and transient behaviour of molten-salt reactor.


October 8, 2014

An international conference on reactor physics PHYSOR 2014 was held this year in Kyoto, Japan. We presented in Kyoto two papers: one (done in cooperation with POLIMI, Italy) on hybrid (i.e. thermal-fast) molten salt reactor and another one on how we calculate coolant void worth in sodium fast reactor core. We also contributed to the POLIMI paper on modeling of the molten salt reactor experiment dynamics and to the IAEA paper on the results of the neutronic benchmark based on the end-of-life experiments at the Phenix sodium-cooled fast reactor.


October 2, 2014

On October 1, 2014 Anne-Laurene Panadero officially started in our group her PhD study in frame of our cooperation with Commissariat à l'énergie atomique et aux énergies alternatives (CEA) on safety assessment of ASTRID sodium-cooled fast reactor considered for construction in France.

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