Sensitivity and uncertainty calculations in support of the noise analysis of the TAPIRO reactor

Special Issue on ‘Overview of recent advances in HPC simulation methods for nuclear applications’, edited by Andrea Zoia, Elie Saikali, Cheikh Diop and Cyrille de Saint Jean

Open Access

Table 4.

Ranking of the most important contributors to the relative Integral Sensitivity Coefficients (ISC) of k_eff, β_eff and Λ_eff. The number in parenthesis is the statistical uncertainty and is intended as ±1σ on the last digit of the result.

	k_eff		β_eff		Λ_eff
	ISC (%/%)		ISC (%/%)		ISC (%/%)
²³⁵U ${\bar{ν}}_{p}$ $\overline{\nu}_p$	0.9840(1)	²³⁵U ${\bar{ν}}_{p}$ $\overline{\nu}_p$	–0.976(3)	²³⁵U (n, f)	–0.634(9)
²³⁵U (n, f)	0.6120(4)	²³⁵U ${\bar{ν}}_{d}$ $\overline{\nu}_d$	0.972(2)	⁶³Cu (n, n)	0.599(5)
⁶³Cu (n, n)	0.115(1)	²³⁵U (n, γ)	–0.039(5)	⁶³Cu (n, γ)	–0.476(6)
⁶⁵Cu (n, n)	0.062(1)	²³⁵U (n, n)	0.03(3)	⁶⁵Cu (n, n)	0.32(4)
²³⁵U (n, γ)	-0.0556(1)	²³⁵U (n, f)	–0.03(2)	²³⁵U (n, γ)	–0.200(4)
²³⁵U (n, n)	0.037(1)	²³⁸U ${\bar{ν}}_{p}$ $\overline{\nu}_p$	0.0218(8)	⁶⁵Cu (n, γ)	–0.125(3)

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