Verification and Validation of Multi-Group Library MUSE1.0 Created from ENDF/B-VII.0

A multi-group library set named MUSE1.0 with 172-neutron group and 42-photon group is produced based on ENDF/B-VII.0 using NJOY code.Weight function of the multi-group library set is taken from the Vitanim-e library and the max legendre order of scattering matrix is six.All the nuclides have thermal scattering data created using free-gas scattering law and 10 Bondarenko background cross sections se lected to generate the self-shielded multi-group cross sections.The final libraries have GENDF-format,MATXS-format and ACE-multi-group sub-libraries and each sub-library generated under 4 temperatures（293 K,600 K,800 K and 900 K）.This paper provides a summary of the procedure to produce the library set and a detail description of the validation of the multi-group library set by several critical benchmark devices and shielding benchmark devices using MCNP code.The ability to handle the thermal neutron transport and resonance self-shielding problems are investigated specially.In the end,we draw the conclusion that the multi-group libraries produced is credible and can be used in the R＆D process of Supercritical Water Reactor.Design.