[1J01-04] Development of Methodology 1

[1J04] Caluculation Method of Estimated Criticality Lower-Limit Multiplication Factor Using the Bootstrap Method

(2)Improvement considering Neutronic Similarity, Experimental Error, and Statistical Error of Monte Carlo Code

*Fuga Nishioka¹, Takuto Hayashi¹, Tomohiro Endo¹, Akio Yamamoto¹ (1. Nagoya Univ.)

Keywords:estimated criticality lower-limit multiplication factor, bootstrap method, neutronic similarity, experimental error, Monte Carlo code, statistical error

In this study, the evaluation method for the estimated critical lower-limit multiplication factor (ECLLMF) using bootstrap method is improved to take into account the neutronic similarity of the critical experiment systems, the experimental error of the critical experiment data, and the statistical error of keff by the continuous energy Monte Carlo calculation. This presentation reports on the estimated result of the ECLLMF obtained by the proposed method for a unit cell system of UO2 sphere surrounded by water.