268
Appendix A2: 235 U-Fueled and Pb–Bi–Zoned ADS Core
A2.2 Subcriticality Measurements
A2.2.1 Core Configurations
See (Figs. A2.11, A2.12, A2.13, A2.14, A2.15 and A2.16).
2 6 2 5 2 4 2 3
2 2 2 1 2 0 1 9 1 8 1 7
1 6 1 5 1 4
1 3 1 2 1 1 1 0
9
8
7
6
5
4
Z
F
Normal fuel rod (3/8"p36EU)
Y
X
16 Partial fuel rod (3/8"p16EU)
W
V
f
Pb-Bi loaded fuel rod
U
p
p
p
p
p
p
p
p
p
p
p
T
p
p
p
p
p
p
p
p
p
p
p
P o l y e t h y l e n e m o d e r a t o r
R
p
p
p
p
p
p
p
p
p
p
p
Q
p
pF
F
F
F
F
p
p
Polyethylene reflector
P
p
p
p
F
F
F
F
F
p
p
p
O
p
p
p
F
f
f
f
F
p
p
p
Aluminum sheath
M
p
pF
f
f
f
F
p
p
L
p
p
p
F
f
F
f
F
p
p
p
Control rod
K
p
p
p
F
F
F
F
p
p
p
J
p
pF
F
F
F
p
p
Safety rod
I
p
p
p
F
F
F
F
p
p
p
H
p
p
p
F
F
F
F
p
p
p
Neutron source (Am-Be)
G
p
p
p
F
F
F
F
p
p
p
E
p
p
p
p
16
16
p
p
p
p
Fission chamber
D
p
p
p
p
p
p
p
p
p
p
B
p
p
p
p
p
p
p
p
p
p
Uncompensated ionization chamber
A
A'
Pb-Bi target
BF3 detector (1/2" diameter)
Optional fiber detector (LiF+ZnS)
Proton beams
C
S
N
UIC
FC
FC#1
UIC#5
FC#3
N
C2
S6
UIC#5
C1
S4
FC#2
C3
S5
UIC#6
Optical fiber #1
Optical fiber #2
Optical fiber #3
Fig. A2.11 Core configuration of ADS with 100 MeV protons (in case of the subcriticality
measurements) (Refs. [1, 3])