A New Approach to Determine Batch Size for the Batch Method in the Monte Carlo Eigenvalue Calculation

다국어 초록 (Multilingual Abstract)

It is well known that the variance of tally is biased in a Monte Carlo calculation based on the poweriteration method. Several studies have been conducted to estimate the real variance. Among them, thebatch method, which was proposed by Gelbard and Prael, has been utilized actively in many Monte Carlocodes because the method is straightforward, and it is easy to implement the method in the codes.
However, there is a problem when utilizing the batch method because the estimated variance variesdepending on batch size. Often, the appropriate batch size is not realized before the completion ofseveral Monte Carlo calculations. This study recognizes this shortcoming and addresses it by permittingselection of an appropriate batch size

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