Neutron source complex for physical researches based on the proton beam of a meson factory

The neutron source complex representing a system of two targets irradiated with a proton beam of the meson facility is described. Neutron targets are situated in the biological sheilding made of steel and heavy concrete 6 m thick complete with 8 channels for neutron beam extraction. The first target surrounded by heavy water moderator with an insert of liquid deuterium is a source of thermal and cold neutrons. The second target is used as a pulse neutron source in time-of-flight investigations. Each neutron target represents a fuel assembly of natural uranium or lead cooled by water A possibility to use PuO2 and 2H35U breeding targets is provided. The peak and beam densities of thermal and cool neutron fluxes on a surface of a cool moderator constitute 7.5x1013, 3x1013, and 1.8x1013, 0.9x1013 neutr/(cm2xs) respectively. Basic characteristics are presented along with neutron source design providing a possibility of target and moderator modification, installation of neutron reflector and experimental devices in the vicinity of a target