Design of a delayed neutron detection system for the ASTRID Sodium-cooled fast reactor

Romain Coulon (1) , Emmanuel Rohée (1) , Jonathan Nicolas Dumazert (1) , Sara Garti (1) , Philippe Filliatre (2) , Christian Jammes (2)

1 LCAE - Laboratoire Capteurs et Architectures Electroniques
2 DER - Département Etude des Réacteurs

Delayed neutron detection systems are key apparati in Sodium cooled Fast Reactors to prevent safety accidents. Based on the feedbacks from Phenix and Superphenix, DND systems are studied by means of the Monte-Carlo particles transport code MCNP6. Promising designs are proposed and investigated as a result of the simulation study.

Keywords: nuclear instrumentation; neutrons; detector; Neutron-gamma discrimination; Monte Carlo; simulation; modelling; particle transport; Fast reactor; Sodium; Fuel failure; Fission products; Neutron detection; instrumentation

Domains: Instrumentation and Detectors [physics.ins-det]; Modeling and Simulation; Nuclear Experiment [nucl-ex]; Methodology [stat.ME]

Romain Coulon, Emmanuel Rohée, Jonathan Nicolas Dumazert, Sara Garti, Philippe Filliatre, et al.. Design of a delayed neutron detection system for the ASTRID Sodium-cooled fast reactor. EPJ Web of Conferences, 2018, ANIMMA 2017 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications, 170, pp.04006. ⟨10.1051/epjconf/201817004006⟩. ⟨cea-01774874⟩