Validation of IRDFF-II library in VR-1 reactor field using thin targets
| Autor: | Andrej Trkov, Michal Kostal, Roberto Capote, Jan Uhlíř, Tomas Bily, Martin Schulc, Evzen Losa, Martin Mareček, Stanislav Simakov, Tomáš Czakoj, Vojtech Rypar, Jan Šimon |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Physics
Physics - Instrumentation and Detectors Field (physics) Neutron dosimeter 020209 energy Nuclear engineering FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) 02 engineering and technology Experimental validation 01 natural sciences 010305 fluids & plasmas Cross section (physics) Nuclear Energy and Engineering 0103 physical sciences Technical university Evaluation methods 0202 electrical engineering electronic engineering information engineering Dosimetry Nuclear Experiment (nucl-ex) Uncertainty quantification Nuclear Experiment |
| Zdroj: | Annals of Nuclear Energy |
| ISSN: | 0306-4549 |
| DOI: | 10.1016/j.anucene.2021.108268 |
| Popis: | Cross section data are fundamental quantities which affect the accuracy of all calculations in nuclear applications. A new dosimetry library IRDFF-II that contains cross section evaluations with full uncertainty quantification was developed by the International Atomic Energy Agency and released in January 2020 ( https://www-nds.iea.org/IRDFF ). A previous version, IRDFF-1.05, was released in 2014 and experimental validation of the newly released cross section by spectrum averaged cross section (SACS) measurements is a high priority task. For such purpose, a neutron dosimeter set containing 5 target foils was activated in 2 independent experiments at the VR-1 reactor of the Czech Technical University in Prague. Care was taken to derive SACS with low uncertainties. New experimental evaluation method is in good agreement with previous approaches based on relative measurements using monitor foils. Good agreement of measured SACS and evaluated IRDFF-II cross sections is observed. Slight overestimation of evaluated ENDF/B-VIII.0 235U(nth,f) PFNS above 10 MeV is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|