Study of neutron scattering in light water in the mistral experiments carried out in EOLE Reactor at CEA Cadarache

J.P. Scotta (1) , G. Noguere (1) , D. Bernard (1) , C. de Saint-Jean (1) , I. Marquez Damian (2)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 Centro Atómico Bariloche [Argentine]

The interpretation of the reactivity temperature coefficient measured in the Mistral experiments was performed with the Monte Carlo code TRIPOLI4 from 10°C to 80°C. The nuclear data library JEFF-3.1.1 was used in the calculations. Three different thermal scattering laws of hydrogen in light water were tested in order to evaluate the impact in the Mistral calculations: the thermal scattering laws present in the nuclear data libraries JEFF-3.1.1 and ENDF/B-VII.1, and CAB model. A different approach for creating thermal scattering files, as molecular dynamics simulations (CAB model) was assessed.

Keywords: light water; thermal scattering law; reactivity temperature coefficient; Mistral

Domains: Nuclear Experiment [nucl-ex]; Nuclear Theory [nucl-th]

J.P. Scotta, G. Noguere, D. Bernard, C. de Saint-Jean, I. Marquez Damian. Study of neutron scattering in light water in the mistral experiments carried out in EOLE Reactor at CEA Cadarache. PHYSOR 2016 - International Conference on the Advances in Reactor Physics, May 2016, Sun Valley, United States. ⟨hal-02442249⟩