Table 1

Uncertainties in keff and βeff calculated using the SUSD3D code. The two values for the βeff uncertainty correspond to the assumption of no/full correlation among the uncertainties of different actinides. SAD/SED uncertainties are not included.

Benchmark Covariance
Uncertainty (%)

keff βeff
SNEAK-7A JENDL-4.0 0.61/0.64 2.7/3.8
ENDF/B-VII.1 0.77/0.79
SCALE-6.0 m 1.09/1.20
FLATTOP-Pu JENDL-4.0 0.70/0.72 2.6/3.3
ENDF/B-VII.1 0.55/0.56
SCALE-6.0 m 1.20/1.28
JEZEBEL JENDL-4.0 0.60/0.61 2.5/2.7
ENDF/B-VII.1 0.56
SCALE-6.0 m 1.35/1.41

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