[2M07-09] Uncertainty, Covariance

[2M07] A study of uncertainty due to nuclear data in a long-lived fission product (LLFP) transmutation system utilizing a fast reactor

(1)Estimation of covariance of neutron cross sections of LLFP

*Tsunenori Inakura¹, Naoki Yamano¹, Chikako Ishizuka¹, Satoshi Chiba¹ (1. Tokyo Tech.)

Keywords:LLFP, Neutron capture cross section, Uncertainty, Nuclear data

Uncertainty evaluation of the neutron capture cross sections of the long-lived fission product (LLFP) nuclides is important for the design of an innovative LLFP transmutation system utilizing a fast reactor. Estimation of uncertainty of the cross-section data produces quantitative evaluation of errors of the reactor constants such as nuclear transmutation rate. We estimated the covariances of neutron cross ections of LLFP nuclides using the nuclear data evaluation code system T6.