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 evaluation |
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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