Appendix A3: 235 U-Fueled and Pb-Zoned ADS Core
309
A3.3.2 Reaction Rate Distribution
See (Tables A3.57, A3.58 and A3.59, Fig. A3.9).
Table A3.57 Specification of measurement of reaction rate distribution in Fig. A3.8 (Ref. [1])
Reaction
Location
Foil/Wire
115 In(n, n ) 115m In
Target (15, D; Fig. A3.8)
10 × 10 × 1 mm (Foil)
115 In(n, γ) 116 In
Core (13-14, A-P; Fig. A3.8)
1 mm diameter, 800 mm long (Wire)
Table A3.58 Core condition in all the cores shown in Fig. A3.8 (Ref. [1])
Case
# of HEU plates
Positions of rods
k eff
F3
4320
C1, C2, A3: 1200.00 [mm]
S4, S5, S6: 1200.00 [mm]
0.98004
F4
4200
C1, C2, A3: 1200.00 [mm]
S4, S5, S6: 1200.00 [mm]
0.96603
F5
4080
C1, C2, A3: 1200.00 [mm]
S4, S5, S6: 1200.00 [mm]
0.95560
F6
3960
C1, C2, A3: 1200.00 [mm]
S4, S5, S6: 1200.00 [mm]
0.95047
Table A3.59 Measured reaction rates of In foil at (15, D) in Cases F3 through F6 (Ref. [1])
Measured reaction rate [s −1 cm −3 ]
Reaction
Case F3
Case F4
Case F5
Case F-6
115 In(n, n ) 115m In (1.970 ± 0.045)E+04 (1.320 ± 0.035)E+04 (2.385 ± 0.020)E+04 (3.482 ± 0.009)E+04