Developments in Sensitivity Methodologies and the Validation of Reactor Physics Calculations

Table 4

C/E and associated uncertainties (σ) before and after adjustment.

Type of experiment	Old 𝐶/𝐸±𝜎	New 𝐶/𝐸±𝜎	Type of experiment	Old 𝐶/𝐸±𝜎	New 𝐶/𝐸±𝜎
U235 Capture PROFIL1^a	0.977±0.020	1.009±0.009	Cm244 TRAPU2^b	0.872±0.023	0.978±0.021
U238 Capture PROFIL1^a	1.004±0.023	1.005±0.010	U238 Fission Rate COSMO^c	0.988±0.015	1.006±0.010
Pu238 Capture PROFIL2^a	1.744±0.040	1.015±0.036	Np237 Fission Rate COSMO^c	0.960±0.015	0.979±0.011
Pu239 (N,2N) PROFIL1^a	0.752±0.150	0.949±0.133	Pu238 Fission Rate COSMO^c	1.083±0.025	1.005±0.023
Pu239 Capture PROFIL1^a	0.963±0.030	1.021±0.015	Pu239 Fission Rate COSMO^c	0.983±0.013	0.984±0.003
Pu240 Capture PROFIL1^a	1.001±0.022	0.995±0.013	Pu240 Fission Rate COSMO^c	1.034±0.023	1.016±0.016
Pu241 Capture PROFIL1^a	0.847±0.041	0.871±0.013	Pu241 Fission Rate COSMO^c	0.998±0.020	1.013±0.017
Pu242 Capture PROFIL1^a	1.092±0.035	1.128±0.019	Pu242 Fission Rate COSMO^c	1.000±0.023	1.002±0.022
Am241 Capture PROFIL1^a	1.000±0.020	1.003±0.015	Am241 Fission Rate COSMO^c	1.074±0.023	1.003±0.022
Np237 Capture PROFIL2^a	0.988±0.036	1.009±0.022	Am243 Fission Rate COSMO^c	1.059±0.023	1.008±0.021
U236 TRAPU2^b	0.965±0.010	0.995±0.009	𝑘effGODIVA^d	1.000±0.001	0.999±0.001
Np237 TRAPU2^b	0.880±0.033	0.954±0.026	U238 Fission Rate GODIVA^d	0.955±0.012	0.965±0.004
Pu238 TRAPU2^b	0.942±0.010	1.000±0.006	Np237 Fission Rate GODIVA^d	0.991±0.016	1.003±0.010
Pu239 TRAPU2^b	1.006±0.005	1.001±0.004	Pu239 Fission Rate GODIVA^d	0.986±0.017	0.987±0.003
Pu240 TRAPU2^b	0.982±0.006	1.000±0.006	𝑘eff JEZEBEL9^e	1.000±0.002	1.001±0.001
Pu241 TRAPU1^b	1.005±0.006	1.001±0.003	U238 Fission Rate JEZEBEL9^e	0.974±0.009	0.984±0.004
Pu242 TRAPU1^b	0.998±0.008	1.012±0.004	Np237 Fission Rate JEZEBEL9^d	1.009±0.017	1.021±0.010
Am241 TRAPU2^b	0.985±0.039	0.986±0.005	𝑘eff JEZEBEL0^e	1.000±0.002	0.999±0.002
Am242 TRAPU2^b	1.029±0.043	1.032±0.013	𝑘eff CIRANO^f	1.007±0.002	1.002±0.001
Am243 TRAPU1^b	0.939±0.026	0.974±0.020	𝑘eff ZPPR-15	0.999±0.002	0.999±0.001
Cm242 TRAPU1^b	1.003±0.039	0.971±0.013	𝑘eff ZPR-3/53	1.009±0.002	1.001±0.001
Cm243 TRAPU2^b	0.462±0.031	0.999±0.031	𝑘eff ZPR-3/54	1.008±0.002	1.000±0.001

Isotope A/B atom density ratio at the end of irradiation of a sample of isotope A.
^aIsotope atom density at the end of irradiation of TRAPU fuel pins with different initial Pu vectors.
^bNormalized fission rates and 𝑘_eff in the COSMO critical experiment at MASURCA.
^cJEZEBEL9: Pu-239 Sphere.
^dJEZEBEL0: Pu-239 Sphere with high Pu-240 content.
^e𝑘_eff of the critical experiment CIRANO (high Pu content) at MASURCA.