Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8066954 | Annals of Nuclear Energy | 2018 | 7 Pages |
Abstract
The F-α shows reactivity errors ranging between 7.1 and 7.3% due to its use of variance-to-mean ratios of detector count signals, which are not very sensitive to neutron background noise. However, the fitting uncertainties associated to the F-α results are large, ranging between 5.4 and 12.8% at one standard deviation. The R-α shows small fitting uncertainties ranging between 2.8 and 3.8%, although reactivity errors are in the range of 3.5-26.5% due to the neutron background noise. Finally, the advanced R-α that explicitly models the neutron background noise contrary to the previous methods shows the reactivity errors in the range of 1.0-11.8%, and provides the lowest uncertainties of the measured Ï in the range of 0.4-0.9%. In conclusion, among the four methods applied to the reactivity measurements at KUCA, the advanced R-α reveals the best accuracy with the lowest uncertainties.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Energy Engineering and Power Technology
Authors
Chidong Kong, Jiwon Choe, Seongpil Yum, Jaerim Jang, Woonghee Lee, Hanjoo Kim, Wonkyeong Kim, Khang Hoang Nhat Nguyen, Tung Dong Cao Nguyen, Vutheam Dos, Deokjung Lee, Ho Cheol Shin, Masao Yamanaka, Cheol Ho Pyeon,