334
Appendix A4: 235 U-Fueled ADS Core in Medium-Fast Spectrum
Table A4.38 Measured prompt neutron decay constants α [s −1 ] deduced by PNS and Feynman-α
methods and subcriticality [$] in dollar units (Ref. [1])
Case 1-F-4 (FFAG acc.) (ρ pcm, exp = 2806.8 ± 54.9 [pcm])
Detector PNS method
Feynman-α method Area ρ $ [$]
Extended area ρ $ [$]
Fiber #1 1414.12 ± 9.70
1401.96 ± 5.90
3.53790 ± 0.03099 4.16379 ± 0.06793
Fiber #2 1474.29 ± 11.38 1439.92 ± 5.86
3.99097 ± 0.03643 4.72086 ± 0.08298
Fiber #3 1406.26 ± 13.80 1312.41 ± 4.50
3.88047 ± 0.02472 6.25959 ± 0.09960
BF-3 #1 1305.18 ± 6.34
1217.98 ± 4.13
3.06990 ± 0.02139 4.82552 ± 0.05332
BF-3 #2 1353.00 ± 7.60
1290.21 ± 5.22
3.49983 ± 0.02819 5.35192 ± 0.06915
BF-3 #3 1318.24 ± 7.39
1229.44 ± 4.19
3.31538 ± 0.02579 4.66721 ± 0.05952
Table A4.39 Measured prompt neutron decay constants α [s −1 ] deduced by PNS and Feynman-α
methods and subcriticality [$] in dollar units (Ref. [1])
Case 1-F-5 (FFAG acc.) (ρ pcm, exp = 13254.0 ± 6.1 [pcm])
Detector PNS method
Feynman-α
method
Area ρ $ [$]
Extended area ρ $ [$]
Fiber #1 2735.11 ± 70.62 2972.19 ± 36.03 14.70001 ± 0.47413 14.48612 ± 1.29327
Fiber #2 2548.37 ± 50.17 2375.37 ± 22.69 16.34603 ± 0.53004 22.42986 ± 1.45658
Fiber #3 2549.58 ± 67.04 2357.45 ± 16.72 18.24909 ± 0.50873 30.52158 ± 2.27163
BF-3 #1 2564.35 ± 22.04 2302.49 ± 9.52
11.86773 ± 0.16154 19.42186 ± 0.55781
BF-3 #2 2691.01 ± 45.25 2356.44 ± 21.71 15.75499 ± 0.47618 31.82251 ± 1.82153
BF-3 #3 2844.46 ± 42.48 2455.13 ± 18.55 16.94683 ± 0.45601 31.19015 ± 1.64630
Table A4.40 Measured prompt neutron decay constants α [s −1 ] deduced by PNS and Feynman-α
methods and subcriticality [$] in dollar units (Ref. [1])
Case 3-F-1 (FFAG acc.) (ρ pcm, MCNP = 1512.9 ± 5.7 [pcm])
Detector PNS method
Feynman-α method Area ρ $ [$]
Extended area ρ $ [$]
Fiber #1 705.96 ± 14.85 719.22 ± 1.29
1.82259 ± 0.00572
2.26361 ± 0.10200
Fiber #2 780.71 ± 27.33 900.39 ± 2.40
5.61627 ± 0.03135 10.24823 ± 0.75562
Fiber #3 800.02 ± 22.21 785.59 ± 2.43
5.76963 ± 0.02645
5.49433 ± 0.37515
BF-3 #1 620.25 ± 2.32
613.23 ± 1.34
1.43617 ± 0.00456
1.75078 ± 0.01056
BF-3 #2 689.60 ± 1.66
675.45 ± 1.39
1.77703 ± 0.00601
2.21869 ± 0.01243
BF-3 #3 579.38 ± 3.13
576.62 ± 1.44
1.32787 ± 0.00428
1.56141 ± 0.01104
Appendix A4: 235 U-Fueled ADS Core in Medium-Fast Spectrum
Table A4.38 Measured prompt neutron decay constants α [s −1 ] deduced by PNS and Feynman-α
methods and subcriticality [$] in dollar units (Ref. [1])
Case 1-F-4 (FFAG acc.) (ρ pcm, exp = 2806.8 ± 54.9 [pcm])
Detector PNS method
Feynman-α method Area ρ $ [$]
Extended area ρ $ [$]
Fiber #1 1414.12 ± 9.70
1401.96 ± 5.90
3.53790 ± 0.03099 4.16379 ± 0.06793
Fiber #2 1474.29 ± 11.38 1439.92 ± 5.86
3.99097 ± 0.03643 4.72086 ± 0.08298
Fiber #3 1406.26 ± 13.80 1312.41 ± 4.50
3.88047 ± 0.02472 6.25959 ± 0.09960
BF-3 #1 1305.18 ± 6.34
1217.98 ± 4.13
3.06990 ± 0.02139 4.82552 ± 0.05332
BF-3 #2 1353.00 ± 7.60
1290.21 ± 5.22
3.49983 ± 0.02819 5.35192 ± 0.06915
BF-3 #3 1318.24 ± 7.39
1229.44 ± 4.19
3.31538 ± 0.02579 4.66721 ± 0.05952
Table A4.39 Measured prompt neutron decay constants α [s −1 ] deduced by PNS and Feynman-α
methods and subcriticality [$] in dollar units (Ref. [1])
Case 1-F-5 (FFAG acc.) (ρ pcm, exp = 13254.0 ± 6.1 [pcm])
Detector PNS method
Feynman-α
method
Area ρ $ [$]
Extended area ρ $ [$]
Fiber #1 2735.11 ± 70.62 2972.19 ± 36.03 14.70001 ± 0.47413 14.48612 ± 1.29327
Fiber #2 2548.37 ± 50.17 2375.37 ± 22.69 16.34603 ± 0.53004 22.42986 ± 1.45658
Fiber #3 2549.58 ± 67.04 2357.45 ± 16.72 18.24909 ± 0.50873 30.52158 ± 2.27163
BF-3 #1 2564.35 ± 22.04 2302.49 ± 9.52
11.86773 ± 0.16154 19.42186 ± 0.55781
BF-3 #2 2691.01 ± 45.25 2356.44 ± 21.71 15.75499 ± 0.47618 31.82251 ± 1.82153
BF-3 #3 2844.46 ± 42.48 2455.13 ± 18.55 16.94683 ± 0.45601 31.19015 ± 1.64630
Table A4.40 Measured prompt neutron decay constants α [s −1 ] deduced by PNS and Feynman-α
methods and subcriticality [$] in dollar units (Ref. [1])
Case 3-F-1 (FFAG acc.) (ρ pcm, MCNP = 1512.9 ± 5.7 [pcm])
Detector PNS method
Feynman-α method Area ρ $ [$]
Extended area ρ $ [$]
Fiber #1 705.96 ± 14.85 719.22 ± 1.29
1.82259 ± 0.00572
2.26361 ± 0.10200
Fiber #2 780.71 ± 27.33 900.39 ± 2.40
5.61627 ± 0.03135 10.24823 ± 0.75562
Fiber #3 800.02 ± 22.21 785.59 ± 2.43
5.76963 ± 0.02645
5.49433 ± 0.37515
BF-3 #1 620.25 ± 2.32
613.23 ± 1.34
1.43617 ± 0.00456
1.75078 ± 0.01056
BF-3 #2 689.60 ± 1.66
675.45 ± 1.39
1.77703 ± 0.00601
2.21869 ± 0.01243
BF-3 #3 579.38 ± 3.13
576.62 ± 1.44
1.32787 ± 0.00428
1.56141 ± 0.01104