The validation and calculation of highly enriched uranium models in JMCT

To verify the accuracy and applicability of JMCT program, 56 models are selected from the International Handbook of Evaluated Criticality Safety Benchmark Experiments. Models are established in JLAMT, and the effective multiplication factors are calculated by JMCT and compared with the reference values and MCNP calculation results. The results show that the calculated values of JMCT are generally within three standard deviations of the reference values and the relative deviations between the JMCT calculation results and the reference values are generally less than 2%. The study has verified the accuracy and applicability of JMCT program to a certain extent, and it provides a reference for the subsequent application and verification of JMCT.