Appendix A5: 232 Th-Fueled ADS Core
351
Table A5.2 Beam characteristics of 14 MeV neutrons and 100 MeV protons in thorium-fueled
cores (Ref. [1])
Core
14 MeV neutrons
100 MeV protons
Repetition (Hz)
Width (μs)
Repetition (Hz)
Width (ns)
Th–PE
100
10
–
–
Th–Gr
100
10
–
–
Th–Be
100
10
–
–
Th–HEU–PE
100
10
20
100
NU–PE
100
10
–
–
Th–HEU–5PE
10
10
20
100
Th–HEU–Gr–PE
10
10
20
100
Table A5.3 Measured results in prompt neutron decay constant deduced by least-squared fitting
in PNS method (Refs. [1–2])
Core
Prompt neutron decay constant α [s −1 ]
14 MeV neutrons
3 He #1
3 He #2
3 He #3
Th–PE
6642 ± 11
6224 ± 27
5751 ± 25
Th–Gr
6451 ± 12
5945 ± 15
5701 ± 17
Th–Be
6515 ± 8
6111 ± 17
5746 ± 20
Th–HEU–PE
5692 ± 11
5275 ± 7
5231 ± 9
NU–PE
5748 ± 11
6592 ± 15
5010 ± 11
Th–HEU–5PE
3110 ± 11
3104 ± 10
–
Th–HEU–Gr–PE
4980 ± 40
4939 ± 50
–
Core
Prompt neutron decay constant α [s −1 ]
100 MeV protons
3 He #1
3 He #2
3 He #3
Th–PE
–
–
–
Th–Gr
–
–
–
Th–Be
–
–
–
Th–HEU–PE
5777 ± 11
5527 ± 35
5236 ± 37
NU–PE
–
–
–
Th–HEU–5PE
2776 ± 17
2917 ± 8
–
Th–HEU–Gr–PE
3186 ± 72
4656 ± 12
–