Appendix A4: 235 U-Fueled ADS Core in Medium-Fast Spectrum
319
4
5
6
7
8
9
10 11 12 13
14 15 16
17 18 19 20 21 22
23 24 25 26
A
G r G r G r G r
G r G r G r G r G r G r
G r G r G r G r G r G r
G r G r G r G r
F
B
G r
G r
G r
G r
D
G r
G r
G r
G r
4
E
G r
G r
G r
G r
G Gr
p
p
Gr
Gr
p
p
p
Gr
p
H
Gr
p
p
p
Gr
Gr
p
p
p
Gr
I
G r
p
p
p
p
p
p
p
p
p
p
p
G r
J
G r
p
p
p
p
p
p
p
p
p
p
p
G r
K
G r
p
p
p
p
4
p
p
p
p
Gr
Gr
L
G r
p
p
p
F
F
F
F
F
p
p
p
G r
M G r
p
p
F
F
F
F
F
p
p
G r
O G r
p
p
F
F
F
F
F
p
p
p
G r
Q G r
p
p
p
F
F
F
F
F
p
p
p
G r
R
G r
p
p
F
F
F
F
F
p
p
G r
S
G r
p
p
p
p
p
p
p
p
p
p
p
G r
T
G r
p
p
p
p
p
p
p
p
p
p
G r
U
G r
p
p
p
p
p
p
p
p
p
p
G r
V
G r
Gr
W G r
Gr
X
G r
Gr
Y
G r
Gr
Z
G r G r G r G r
G r G r G r G r G r G r
G r G r G r
G r G r G r G r G r G r
G r G r G r G r
Optical fiber
Neutron source (Am-Be)
Fission chamber
Uncompensted ionization chamber
1"φ hole polyethylene
Aluminum sheath
Polyethylene moderator
Polyethylene reflector
Control rod
Safety rod
Pb-Bi target
Normal fuel (1/8"p60EUEU)
Graphite
Partial fuel (1/8"p4EUEU)
N
FC
UIC
S
C
C3
S5
S4
C1
C2
S6
N
FC#1
UIC#4
FC#2
UIC#5
UIC#6
Optical fiber #1
Optical fiber #2
Optical fiber #3
BF-3 detector #1
BF-3 detector #2
BF-3 detector #3
BF-3 detector #4
FC#3
Fig. A4.4 Core configuration (EE1 core) of ADS with 100 MeV protons. (Case 1-F: Critical core;
3008 HEU plates) (Refs. [1–2])
Fuel (1”)
(Unit cell 12 times)
Polyethylene
(10”p+1/2”PE
17+1/4”PE)
(18.75”)
Al plate
(20.00 mm)
Al cells: (1/16”Al 2+1/8”p) 28
(7”) +Gr (2”)
Gr (2”) + Void (1.7”)
(1/16”HEU 2 + 1/8”p) 4
(1”)
Reflector (28.54”)
(Lower)
Reflector (30.45”)
(Upper)
Al cell
28
times
Al cell
28
times
Polyethylene
(10”p+1/2”PE
19+1/4”PE)
(19.75”)
Al cells: (1/16”Al 2+1/8”p) 24
(7”)
Fig. A4.5 Fall sideway view of fuel rod “4” shown in Fig. A4.4 (Ref. [1])