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First validation of the new continuous energy version of the MORET5 Monte Carlo code


Congress title :PHYSOR 2008
Congress location :Interlaken
Congress date:14/09/2008

Document type > *Congrès/colloque

Keywords > continuous energy, criticality, Monte Carlo

Research Unit > IRSN/DSU/SEC/LERD

Authors > BERNARD Franck, FORESTIER Benoit, HAECK Wim, JACQUET Olivier, MISS Joachim, RICHET Yann

Publication Date > 19/09/2008

Summary

The 5.A.1 version is the next release of the MORET Monte Carlo code dedicated to criticality and reactor calculations. This new version combines all the capabilities that are already available in the multigroup version with many new and enhanced features. The main capabilities of the previous version are the powerful association of a deterministic and Monte Carlo approach (like for instance APOLLO-MORET), the modular geometry, five source sampling techniques and two simulation strategies. The major advance in MORET5 is the ability to perform calculations either a multigroup or a continuous energy simulation. Thanks to these new developments, we now have better control over the whole process of criticality calculations, from reading the basic nuclear data to the Monte Carlo simulation itself. Moreover, this new capability enables us to better validate the deterministic-Monte Carlo multigroup calculations by performing continuous energy calculations with the same code, using the same geometry and tracking algorithms. The aim of this paper is to describe the main options available in this new release, and to present the first results. Comparisons of the MORET5 continuous-energy results with experimental measurements and against another continuous-energy Monte Carlo code are provided in terms of validation and time performance. Finally, an analysis of the interest of using a unified energy grid for continuous energy Monte Carlo calculations is presented.
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