This work has been carried out within the framework of the TRADE experiment, consisting in coupling an external proton accelerator to a target to be installed in the central channel of the TRIGA reactor (Iocated at the ENEA-Casaccia Centre) scrammed to sub-criticality. The main objective of this report is to test and validate the new JECCOLlB2A nuclear data set, that is an updating version of JECCOLlB2 (from JEF2.2 library processing), developed at CEA-Cadarache far the TRADE neutronic analysis with the ERANOS ver. 2.0 deterministic code. Differently from JECCOLlB2, this new data set considers correctly some TRIGA peculiarities as the fuel ternary alloy (uranium-zirconium-hydrogen) and the behaviour of some isotopes in its thermal spectrum. The validation of JECCOLIB2A has been carried out by comparing its microscopic cross-sections data, obtained from JEF3.0 and ENDFB-VI library processing, with the JECCOLlB2 and ENDFB-VI (used by the MCNP Monte Carlo code) data at different temperatures. Furthermore a perturbation analysis of the system, in a critical configuration at ambient temperature, has been performed to evaluate the influence of each updated nuclide on the system reactivity.
|Titolo:||Comparison between Cross-section data for deterministic and Monte Carlo calculations in the TRADE experiment|
|Data di pubblicazione:||12-apr-2005|
|Appare nelle tipologie:||5.2 Documento in Garanzia della Qualità|