Use of the ETA-1 reactor for the validation of the multi-group APOLLO2–MORET 5 code and the Monte Carlo continuous energy MORET 5 code

• Validation of thorium cross sections in thermal energy spectrum.
• Reactor configuration in heavy water.
• Use of fuel bundles.

The present paper aims at providing experimental validation for the use of the MORET 5 code for advanced concepts of reactor involving thorium and heavy water. It therefore constitutes an opportunity to test and improve the thermal-scattering data of heavy water and also to test the recent implementation of probability tables in the MORET 5 code.