High Power Laser and Particle Beams, Volume. 36, Issue 9, 096001(2024)
Quantification of calculated effective multiplication factor uncertainty caused by nuclear data in research reactor
Figures & Tables(9)
Fig. 4. Core cross-sections under three operating conditions of control rods
Fig. 6. Comparison of absorption cross-sections of hafnium in TENDL-2021 library
Table 1. Comparison of disturbance results of single group elastic scattering cross section of sodium
View tableView in ArticleTable 1. Comparison of disturbance results of single group elastic scattering cross section of sodium
mean stdev/% Fiorito L[ 3 ]MacFarlane[ 10 ]this article Fiorito L[ 3 ]MacFarlane[ 10 ]this article ENDF/B-VII.1 7.94 7.94 7.95 2.44 2.46 2.52 JEFF-3.2 7.89 7.89 7.90 2.10 2.09 2.15
Table 2. Contribution of uncertainty of each nuclide under three working conditions
View tableView in ArticleTable 2. Contribution of uncertainty of each nuclide under three working conditions
working condition keff uncertainty caused by fuel nuclides/10−5 uncertainty caused by coolant and moderator/10−5 uncertainty caused by control rod material/10−5 total/10−5 27Al 238U 235U total 1H 2H 16O 9Be total 174Hf 176Hf 177Hf 178Hf 179Hf 180Hf total critical condition 1.00457 ±0.00008 309.5 67.6 417.0 523.7 346.6 41.6 107.1 59.9 370.0 15.0 15.1 154.7 15.4 22.9 17.3 156.5 660.8 control rod fully inserted 1.00457 ±0.00008 247.5 57.5 309.8 400.7 250.0 46.1 96.4 60.2 278.5 13.9 17.3 324.7 17.6 40.1 20.9 329.1 588.5 control rod fully withdrawn 1.00457 ±0.00008 366.7 83.2 454.5 589.9 367.4 44.3 100.4 75.0 390.7 13.2 13.8 13.8 13.5 14.0 14.3 33.7 708.4
Table 3. Quantitative results of uncertainty for each reaction channel under different operating conditions
(10−5) View tableView in ArticleTable 3. Quantitative results of uncertainty for each reaction channel under different operating conditions
(10−5) nuclide reaction channel critical condition control rod fully inserted control rod fully withdrawn 235U capture 181.5 154.4 237.0 fission 115.9 99.5 132.4 inelastic scattering 8.3 7.2 8.9 elastic scattering 8.9 8.7 8.2 prompt multiplicity 131.6 116.8 163.9 energy distribution 331.8 220.1 325.4 238U capture 51.9 46.2 68.8 fission 8.3 7.8 8.2 inelastic scattering 36.9 27.1 39.7 elastic scattering 17.0 15.0 20.0 prompt multiplicity 10.1 9.6 9.4 energy distribution 7.8 8.0 8.0 27Al capture 168.3 143.6 219.0 elastic scattering 130.9 98.3 127.1 inelastic scattering 224.3 176.0 265.3 9Be elastic scattering 42.5 42.8 52.8 inelastic scattering 42.2 42.3 53.2 16O elastic scattering 106.7 96.1 100.0 capture 8.8 7.6 8.8 1H elastic scattering 188.2 136.6 184.3 capture 291.1 209.4 317.8 2H elastic scattering 40.6 45.2 43.6 capture 9.2 9.0 7.9 174Hf capture 8.8 8.3 7.6 elastic scattering 8.2 7.5 7.7 inelastic scattering 8.9 8.2 7.6 176Hf capture 9.5 13.3 8.0 elastic scattering 8.4 7.8 8.0 inelastic scattering 8.2 7.8 7.8 177Hf capture 154.0 323.9 8.3 elastic scattering 12.1 21.6 7.7 inelastic scattering 8.4 7.7 7.9 178Hf capture 9.2 13.4 7.6 elastic scattering 8.9 8.1 8.0 inelastic scattering 8.6 8.0 7.8 179Hf capture 19.6 38.3 8.3 elastic scattering 8.4 9.2 8.0 inelastic scattering 8.3 7.4 7.9 180Hf capture 12.3 17.0 8.3 elastic scattering 8.9 8.8 8.4 inelastic scattering 8.3 8.4 8.1
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Jingyu Sun, Jimin Ma. Quantification of calculated effective multiplication factor uncertainty caused by nuclear data in research reactor[J]. High Power Laser and Particle Beams, 2024, 36(9): 096001
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Received: Jan. 18, 2024
Accepted: May. 13, 2024
Published Online: Oct. 15, 2024
The Author Email: Ma Jimin (majm03@yeah.net)
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