Appendix A2: 235 U-Fueled and Pb–Bi–Zoned ADS Core
277
Fig. A2.19 Foil
arrangement at a gap
between Pb-Bi target and
fuel rod in position (15, M)
shown in Fig. A2.18 (Refs.
[1, 3])
100.0 mm
Au-Cd
Axial center
position
Al
54.3 mm
Fe
14.0 mm
In
40.0 mm
Ni
Au
A2.3.2 Reaction Rate Distributions
See (Fig. A2.20).
Fig. A2.20 Comparison
between measured and
calculated 115 In(n, γ) 116m In
reaction rate distributions
along (14-13, P-A) region
shown in Fig. A2.18 (Refs.
[1, 3])
(a) Case II-3
-50
-40
-30
-20
-10
0
10
0
50
100
150
200
Distance from location of Pb-Bi target [cm]
Normalized reaction rate [Arbitrary units]
Polyethylene
region
Normal fuel region
Pb-Bi-zoned
fuel region
Normal
fuel region
Calculation
Experiment
-50
-40
-30
-20
-10
0
10
0
50
100
150
200
Distance from Pb-Bi target [cm]
Normalized reaction rate [Arbitrary units]
Polyethylene
region
Normal
fuel
region
Pb-Bi zoned
fuel region
Normal
fuel region
Calculation
Experiment
(b) Case II-4