Computational Method for Global Sensitivity Analysis of Reactor Neutronic Parameters

Table 4

Estimated sensitivities of the infinite multiplication factor to different cross-sections (Case A) or their subsets (Case B).

Case	Subset of cross-sections	Traditional Monte Carlo		Quasi-Monte Carlo		Sparse grid
	𝐗𝑢	𝑆𝐗𝑢	𝑆^tot𝐗𝑢	𝑆𝐗𝑢	𝑆^tot𝐗𝑢	𝑆𝐗𝑢	𝑆^tot𝐗𝑢
	Σ^1𝑐	0.1766	0.1766	0.1766	0.1766	0.1766	0.1766
	Σ^2𝑐	0.1624	0.1626	0.1626	0.1626	0.1626	0.1626
	Σ^1𝑓	0.0071	0.0072	0.0072	0.0072	0.0072	0.0072
A	Σ^2𝑓	0.0640	0.0641	0.0641	0.0641	0.0641	0.0641
	𝜈Σ^1𝑓	0.0807	0.0808	0.0808	0.0808	0.0808	0.0808
	𝜈Σ^2𝑓	0.4676	0.4678	0.4677	0.4677	0.4677	0.4677
	Σ𝑠^1→2	0.0409	0.0410	0.0410	0.0410	0.0410	0.0410
	Σ^1𝑐,Σ^2𝑐,Σ^1𝑓,Σ^2𝑓	0.3453	0.3453	0.3453	0.3453	0.3453	0.3453
B	𝜈Σ^1𝑓,𝜈Σ^2𝑓	0.6124	0.6126	0.6125	0.6125	0.6125	0.6125
	Σ𝑠^1→2	0.0420	0.0422	0.0422	0.0422	0.0421	0.0421