Study of the Allegro Core Performance

The presented paper is related to introduction of the design and neutronic characterization start-up core developed for Gas cooled Fast Reactor (GFR) demonstrator. Slovak University Technology in Bratislava joined project ALLEGRO last decade within consortium middle-European institutions. In development plan GEN IV GFR demonstrator one most necessary steps. reactor small helium 75 MWth thermal power unit. Its main objective demonstrate key technologies perform tests innovative materials. based on standard MOX pin type fuel first phase project. active a large 2400 makes use ceramic materials, but will be used. It mainly viability technology acquire experimental data further research. works are identified discrepancies between designs, sensitivity analysis was performed both reactors. Neutronic aimed determination parameters using conventional computational systems. results uncertainty calculations conjunction with similarity analysis.