Perturbation-Theory-Based Sensitivity and Uncertainty Analysis with CASMO-4

Table 5

The five most significant sources of uncertainty for the response 𝜈Σ_f,2 and the corresponding energy- and region-integrated relative sensitivity coefficients.

Nuclide	Param. pair	Sensitivity		Contribution to Δ𝑅/𝑅 (%)
		CASMO	TSUNAMI	CASMO	TSUNAMI
^235U	𝜈,𝜈	9.996×10^−1	9.998×10^−1	3.105×10^−1	3.106×10^−1
^235U	𝜎f,𝜎f	7.985×10^−1	7.941×10^−1	2.893×10^−1	2.869×10^−1
^235U	𝜎f,𝜎c	7.985×10^−1	7.941×10^−1	1.134×10^−1	1.139×10^−1
		−3.599×10^−2	−3.667×10^−2
^238U	𝜎c,𝜎c	−4.406×10^−2	−4.255×10^−2	7.257×10^−2	7.222×10^−2
^235U	𝜎c,𝜎c	−3.599×10^−2	−3.667×10^−2	5.613×10^−2	5.672×10^−2