Experimental program on validation of reactor constants for fast reactors calculations and reactor fuel cycle

摘要

During the recent few years in IPPE there has been developed and consistently performed the program, directed on precision of nuclear data of materials, used in perspective variants of reactors of new generations and their fuel cycle. The program includes measurements on critical facilities BFS (IPPE) and fast power reactors. Nuclear constants of the main fuel nuclides have been tested quite good. In the recent years owing to international discussions there was showed up the necessity of obtaining a rnnew data for verification of data on ~(238)U, ~(239)Pu in MOX-fuel mixtures with relatively small amount of hydrogen-containing moderators. Specific neutron spectrum, enriched with neutrons of resonance power is formed in such compositions. On the BFS facilities there was carried out a series of experiments on critical assemblies BFS- 97, -99, -101 with correlation H/Pu from 0 to 8. A brief description of experiments and some results of it's analysis is given in the report.