Recent developments in the Integral Data Assimilation (IDA) methods within Bayesian framework have been achieved at CEA to tackle problem of correlated experiments (through technological uncertainties) and neutron transport model numerical effects. Hence, reference Monte-Carlo deterministic calculations (TRIPOLI4 ® APOLLO3 ) are used together solve equations get sensitivity profiles. Furthermor...

The ANIMMA conferences offer a unique opportunity to discover research carried out in all fields of nuclearmeasurements and instrumentation with applications extending from fundamental physics to fission and fusion reactors, medical imaging, environmental protection and homeland security. After four successful editions of the Conference, it was decided to prepare a review based to a large exten...

The neutronic feasibility has been studied for Cs transmutation with commercial fast reactors. By irradiating Cs, the existence of stable isotope Cs deteriorates an effective net reduction of Cs owing to new creations of Cs by double neutron capture reactions, because Cs recovered by an element-wise separation process contains the associated isotopes Cs, Cs and Cs except Cs. The following three...

In the framework of the Neutronic and Nuclear Assessment Task Group of the MEGAPIE experiment we measured the delayed neutron (DN) flux at the top of the target. The measurement was proposed mainly for radioprotection purposes since the DN flux at the top of the target has been estimated to be of the same order of magnitude as the prompt neutron flux. Given the strong model-dependence of DN pre...

The JAERI /USDOE collaborative program is going on using the FNS facility at JAERI. The phase-III is a new series on tritium breeding measurements with a totally different experimental arrangement from the previous ones that used a point neutron source geometry. The new series basically consists of an annular test blanket and a pseudo-line source to investigate the effect of source spread on th...

The recent progress in the R&D neutronics efforts spent in the EU to support the development of the HCLL and HCPB breeder blankets is presented. These efforts include neutronic design activities performed in the frame of the European DEMO reactor study, validation efforts by means of neutronics mock-up experiments using 14 MeV neutron generators, and the development of dedicated tool computatio...

In the CORTEX project, methods to simulate neutron flux oscillations were enhanced and machine-learning based tools determine causes of measured developed, using results simulations as training validation data. For a selected combination those tools, several sensitivity analyses performed assess their robustness trustworthiness. The simulated tool CORE SIM+. It calculates three-dimensional fiel...

Control and safety of nuclear reactors are significantly influenced by the determination parameters. The three most crucial factors for assessing reactor status infinite multiplication factor, reactivity coefficients, power peaking factor. objective present study is to examine how RSG-GAS fuel parameters behave in a typical operation state. A lattice cell model core was modeled using WIMSD-5Bwi...