WWER-1000 Core and Reflector Parameters Investigation in the LR-0 Reactor

Measurements and calculations carried out in the core and reflector of WWER1000 mock-up are discussed: – the determination of the pin-to-pin power distribution in the core by means of gamma-scanning of fuel pins and pin-to-pin calculations with Monte Carlo code MCU-REA and diffusion codes MOBY-DICK (with WIMS-D4 cell constants preparation) and RADAR, – the fast neutron spectra measurements by proton recoil method inside the experimental channel in the core and inside the channel in the baffle, and corresponding calculations in P3S8 approximation of discrete ordinates method with code DORT and BUGLE-96 library, – the neutron spectra evaluations (adjustment) in the same channels in energy region 0.5 eV-18 MeV based on the activation and solid state track detectors measurements.