Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1

Table 6

Largest integrated sensitivity coefficients of the reaction cross sections for the rodded case at HZP and HFP sorted in descending order provided by SCALE-6.1.

(a) Rodded at HZP

Reaction		Int.sen.coef.
235U	𝜈	9.2720𝐸−01
235U	(𝑛,𝑓)	3.6753𝐸−01
1H	(𝑛,𝑛)	2.3743𝐸−01
238U	(𝑛,𝛾)	−1.8097𝐸−01
235U	(𝑛,𝛾)	−1.2798𝐸−01
238U	𝜈	7.1728𝐸−02
238U	(𝑛,𝑓)	4.3054𝐸−02
1H	(𝑛,𝛾)	−3.3060𝐸−02
109Ag	(𝑛,𝛾)	−2.1940𝐸−02
238U	(𝑛,𝑛)	1.6606𝐸−02
107Ag	(𝑛,𝛾)	−1.3914𝐸−02
115In	(𝑛,𝛾)	−1.2778𝐸−02

(b) Rodded at HFP

Reaction		Int.sen.coef.
235U	𝜈	9.2540𝐸−01
235U	(𝑛,𝑓)	3.6931𝐸−01
1H	(𝑛,𝑛)	2.4283𝐸−01
238U	(𝑛,𝛾)	−1.8549𝐸−01
235U	(𝑛,𝛾)	−1.2804𝐸−01
238U	𝜈	7.3537𝐸−02
238U	(𝑛,𝑓)	4.4462𝐸−02
1H	(𝑛,𝛾)	−3.2066𝐸−02
109Ag	(𝑛,𝛾)	−2.2270𝐸−02
238U	(𝑛,𝑛)	1.7615𝐸−02
107Ag	(𝑛,𝛾)	−1.4158𝐸−02
115In	(𝑛,𝛾)	−1.2976𝐸−02