ALFRED neutronics benchmark

The nuclear industry is constantly progressing in the search for more optimal technologies that guarantee a clean, safe and reliable electricity supply, and Generation IV reactors will play a very important role in this respect. In the last few years, much interest has been shown in Europe in Lead-cooled Fast Reactors (LFR), due to the many advantages that lead offers as a coolant (cheap, does not react with water or air, acts as radiation shielding, good neutron economy, allows operation in fast spectrum and the use of reprocessed fuel, etc.). However, it also faces several challenges (opacity and high density of lead, 210Po formation, etc.), in addition to the lack of operational experience with this technology in Europe. Prior to the construction of the first commercial reactor of this type, the ELFR (European LFR), the design and construction of the ALFRED (Advanced LFR European Demonstrator)has been commissioned. To familiarize interested institutions with the physics and neutronics of an LFR core and assess the capability of current simulation tools, a benchmark of ALFRED is being carried out under the guidance of the OECD/NEA (Organisation for Economic Co-operation and Development / Nuclear Energy Agency) Expert Group on Physics of Reactor Systems (EGPRS). In this work, a model of ALFRED has been developed with Serpent 2.2.0 code. Calculation of requested neutronics parameters have been carried out with JEFF-3.3, ENDF/B-VIII.0 and JENDL-5 nuclear data libraries. Finally, Sensitivity and Uncertainty analysis as well as Target Accuracy Requirements analyses are performed.