ON THE USE OF DIFFERENT VARIANCE REDUCTION TECHNIQUES WITHIN MCNP TO CALCULATE THE FLUX ON THE CONCRETE WALLS OF A PRESSURIZED WATER REACTOR

摘要

Monte-Carlo particle transport codes are commonly used as reference calculation schemesto simulate large systems such as Pressurized Water Reactors (PWR). In particular, thecalculation of ex-core flux-related quantities often requires the use of variance reductiontechniques, which themselves rely on pre-calculated importance maps. This work proposesa comparison of the performances associated with the use of different weight mapsproduced by methods based either on Monte-Carlo codes or on deterministic codes, appliedto detectors placed in the concrete wall of a PWR. Also, the data published in thispaper are public and open data, so that interested researchers can use these publishedresults for benchmark purposes.