Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments

Figures & data

Figure 1. Experimental setups for HTC critical experiment series: Phases 1 and 2 (upper), Phase 3 (center), and Phase 4 (bottom).

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Table 1. Averaged k_eff values and standard deviations for each phase

Item		MVP-II/JENDL-4.0	MVP-II/ENDF/B-7.1	MVP-II/JEFF-3.2	SCALE-6.2/ENDF/B-VII.1
Phase 1	Average	1.0003	0.9997	0.9981	1.0001
	1σ [-]	0.0008	0.0007	0.0010	0.0007
Phase 2	Average	1.0012	0.9998	0.9990	0.9973
(Gd solution)	1σ [-]	0.0009	0.0011	0.0009	0.0012
Phase 2	Average	1.0009	1.0003	0.9989	1.0003
(Boron solution)	1σ [-]	0.0027	0.0027	0.0028	0.0025
Phase 3	Average	1.0000	0.9993	0.9976	0.9998
	1σ [-]	0.0015	0.0017	0.0015	0.0018
Phase 4	Average	1.0013	0.9997	0.9986	0.9999
(Lead screen)	1σ [-]	0.0018	0.0017	0.0017	0.0017
Phase 4	Average	0.9993	0.9985	0.9972	0.9984
(SS screen)	1σ [-]	0.0018	0.0019	0.0019	0.0019

Figure 2. Calculated k_eff values for Phase 1 as a function of fuel rod pitch.

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 3. Calculated k_eff values for Phase 2 as a function of fuel rod pitch: Gadolinium (upper) and boron (bottom).

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 4. Calculated k_eff values for Phase 2 as a function of concentration: Gadolinium (upper) and boron (bottom).

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 5. Calculated k_eff values for Phase 3 as a function of case number.

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 6. Calculated k_eff values for Phase 4 as a function of case number: Lead (upper) and Steel (bottom).

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 7. Averaged biases and standard deviations (1σ) as a function of phase.

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 8. Microscopic production and capture reaction rates of JENDL-4.0 as a function of fuel rod pitch in Phase 1.

S. Shiba: Validation of MVP-II with JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2 through HTC critical experiments.

Figure 9. Difference of microscopic reaction rates as a function of fuel rod pitch in Phase 1. (JEFF-3.2–JENDL-4.0).

Figure 10. Difference of microscopic reaction rates as a function of fuel rod pitch in Phase 1 (ENDF/B-VII.1–JENDL-4.0).