[2M07-09] Uncertainty, Covariance

[2M08] A study of uncertainty due to nuclear data in a long-lived fission product (LLFP) transmutation system utilizing a fast reactor

(2)Uncertainty of reaction rate due to neutron capture cross section error of LLFP

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

Keywords:Fast reactor, Transmutation system, LLFP, Neutron capture cross section, Nuclide transmutation rate, Uncertainty analysis

Uncertainty evaluation of transmutation characteristics due to errors in neutron capture cross sections of LLFP nuclides is an important issue in the design of an innovative long-lived fission product (LLFP) transmutation system utilizing a fast reactor. By using the error of neutron capture cross section estimated using a T6 system, the uncertainty of the reaction rate of the LLFP nuclides has been analyzed under conditions of simultaneous irradiation of LLFP 4 nuclides on the transmutation target assembly enabling high transmutation efficiency.