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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Latest News
Sandia and Aeva evaluate intrusion detection system
Sandia National Laboratories is collaborating with the California-based Aeva Technologies, a developer of next-generation sensing and perception systems, on the development of technology for strengthening security at U.S. nuclear reactor sites.
Satoshi Takeda, Takanori Kitada
Nuclear Science and Engineering | Volume 195 | Number 5 | May 2021 | Pages 496-508
Technical Paper | doi.org/10.1080/00295639.2020.1833601
Articles are hosted by Taylor and Francis Online.
We developed a cross-section adjustment method based on Bayesian theory for adjusting the independent cross-section set that is given by dividing the cross-section set. While all cross sections have to be adjusted in the conventional cross-section adjustment method, the independent cross-section set can be individually adjusted in the developed method. In addition, the covariance of cross sections that are assumed to be independent of each other is not adjusted in the developed method. The adjusted cross sections and the covariance are the same in both methods. The cross-section adjustment was performed using the criticality of the light water–moderated uranium benchmark. The result shows that the uncertainty of the multiplication factor is reduced from 0.005 to 0.007 Δk/k to 0.003 to 0.005 Δk/k by the developed method. The reduction is smaller than that by the conventional method since the developed method does not adjust the covariance of cross sections that are assumed to be independent of each other.