Publication
Integral testing of 237Np cross-sections in GCFR spectra
Related publications (32)
Atomic level insight into irradiation effects in nuclear fuel materials
Microstructural evolution during in-pile irradiation, radiation damage effects and fission products behavior in UO2 nuclear fuel are key issues in understanding and for the modeling of the performance as well as safety characteristics of nuclear fuels in t ...
EPFL2024Data-Driven Predictive Models: Calculational Bias in Characterization of Spent Nuclear Fuel
Characteristics of the spent nuclear fuel (SNF) are typically calculated, requiring validation a priori. The validation process relies on the difference between calculations and measurements, namely the bias. Usually, predicting the bias based on benchmark ...
EPFL2022Interface Tracking Investigation of the Sliding Bubbles Effects on Heat Transfer in the Laminar Regime
Konstantin Mikityuk, Lubomír Bures
Helium gases are utilized to remove fission products from the molten salt fast reactor (MSFR) core during operation. Helium gases and other volatile fission products may be introduced into the intermediate heat exchanger channels. The effect of these gases ...
2021Towards the Validation of Noise Experiments in the CROCUS Reactor Using the TRIPOLI-4 Monte Carlo Code in Analog Mode
Andreas Pautz, Vincent Pierre Lamirand, Oskari Ville Pakari
Intrinsic neutron noise experiments offer a non-invasive manner to measure the prompt decay constant or reactivity of fissile systems. Using the fluctuations in the density of fission chains, one can infer the kinetics parameters via correlation analysis s ...
2021Data assimilation of post irradiation examination experiments to adjust fission yields
Andreas Pautz, Mathieu Hursin, Daniel Jerôme Siefman
Nuclear data, especially fission yields, create uncertainties in the predicted concentrations of fission products in spent fuel. Herein, we present a new framework that extends data assimilation methods to burnup simulations by using data from post-irradia ...
E D P SCIENCES2020Data assimilation of post-irradiation examination data for fission yields from GEF
Andreas Pautz, Mathieu Hursin, Dimitri Rochman, Daniel Jerôme Siefman
Nuclear data, especially fission yields, create uncertainties in the predicted concentrations of fission products in spent fuel which can exceed engineering target accuracies. Herein, we present a new framework that extends data assimilation methods to bur ...
EDP SCIENCES S A2020Nuclear data uncertainties for Swiss BWR spent nuclear fuel characteristics
Mathieu Hursin, Hakim Ferroukhi, Dimitri Rochman, Abdelhamid Dokhane, Alexander Vasiliev
The effect of nuclear data (fission yields, cross sections and emitted spectra) is quantified for spent nuclear fuel assemblies from a realistic boiling water reactor operated over 25 cycles. Nominal calculations are performed with the CASMO5, SIMULATE-3 a ...
2020Determination of the activity inventory and associated uncertainty quantification for the CROCUS zero power research reactor
Andreas Pautz, Mathieu Hursin, DongHyuk Lee
The paper describes the source term estimation of CROCUS, the zero power research reactor of EPFL, to be used for dispersion analysis under accidental conditions. To fulfil regulatory requirements, the source term of the CROCUS fuel is estimated through Mo ...
2019Development and Application of Data Assimilation Methods in Reactor Physics
Simulations of nuclear reactor physics can disagree significantly from experimental evidence, even when the most accurate models are used. An important part of this bias from experiment is caused by nuclear data. The nuclear data have inherent uncertaintie ...
EPFL2019Method development for discrimination of anodic and cathodic signals in miniature fission chambers for reactor physics applications
In 2014, a measurement campaign was made at CEA Cadarache using different versions of a high sensibility miniature fission chamber prototype with two fissile layers. The current project studies the possibilities of discrimination between signals coming fro ...
2017