Appendix A2: 235 U-Fueled and Pb–Bi–Zoned ADS Core
273
Table A2.14 Positions of
control and safety rods at
critical state in Fig. A2.11
(Ref. [1])
Rod
Rod position (mm)
C1
1200.00
C2
525.39
A3
1200.00
S4
1200.00
S5
1200.00
S6
1200.00
Excess reactivity [pcm]
149 ± 3
Table A2.15 Control rod
worth (Ref. [1])
Rod
Rod worth [pcm]
C1 (S4)
549 ± 3
C2 (S6)
194 ± 1
A3 (S5)
483 ± 2
(β eff = 781 ± 4 [pcm] by MCNP6.1 with ENDF/B-VII.0)
Table A2.16 Effective
multiplication factor in Cases
II-1 through II-6 (Ref. [1])
Case
k eff (MCNP6.1 with ENDF/B-VII.0)
Critical state
1.00378 ± 0.0004
Case II-1
0.99219 ± 0.0004
Case II-2
0.98723 ± 0.0004
Case II-3
0.97950 ± 0.0004
Case II-4
0.95784 ± 0.0004
Case II-5
0.91355 ± 0.0004
Case II-6
0.90006 ± 0.0004
Table A2.17 Beam
characteristics of 100 MeV
protons (Ref. [1])
Case
100 MeV protons
Repetition (Hz)
Width (ns)
Case II-1
20
50
Case II-2
20
50
Case II-3
20
50
Case II-4
20
50
Case II-5
20
50
Case II-6
20
50
Proton beam intensity was 1 nA; Spot size of proton beams: 40
mm.