JAEA-Conf 2011-002 - 日本原子力研究開発機構

More documents

Recommendations

Info

A modified SRAC library was prepared where a correction factor 0.89 was applied to infinite dilution capture cross of 157Gd in SRAC public thermal library prepared for the energy range below 1.8554eV. In the preparation of the modified cross section library, total cross sections were also adjusted corresponding to the correction of the capture cross sections, however, the shielding factors of capture cross sections of 157Gd were not changed. 4 SRAC Burnup Calculation Burnup calculations were performed with SRAC-Pij module using both the original and the modified JENDL-3.3 libraries. A 2D-infinite assembly model was applied as the burnup calculation model. Rated power histories of BWR fuel assembly were used, whose power density, pellet/moderator temperatures and in-channel void fraction were 50.4 kW/, 520/286 and 40%, respectively. Control blade was withdrawn in all the irradiation period and cooling period was not set up. The comparisons of neutron multiplication factors and fission rate distributions between the burnup calculations using the modified and the original libraries were performed and showed in Figs. 3 and 4, respectively. JAEA-Conf 2011-002 Figure 3 Comparison of Infinite Multiplication Factors The differences in the infinite multiplication factors of the fuel assemblies between modified and original cross section library are 0.35%k in the UO2 fuel assembly and 0.30%k in the MOX fuel assembly at the beginning of life (BOL), and they decrease with burnup and finally extinguish at 15GWd/t.
Figure 4 Comparison of Fission Rate Distribution Peaking factors in Gd rods reach equilibrium state at 12GWd/t. Effect on fission rate distribution reveals mainly at the BOL and extinguishes at 15GWd/t. The comparison of fission rate distributions at the BOL is shown in Figure 5. MOX UO 2 Max = 1.404Min 1.404Min = 0.412 Max = 1.254Min 1.254Min = 0.338 : Gd rod, Max Max rod JAEA-Conf 2011-002 %-RMS1.02/ %-RMS1.02/ 0.50 for Gd/Average Rod Relative Fission Distribution at BOL Relative Difference at BOL (Original Library) (Modified/Original-) Figure 5 Comparison of Fission Rate Distributions at BOL The fission rates of Gd rods at the BOL increase by 1.1% and 1.5% in MOX and UO2 fuel assemblies, respectively. 5 Conclusion Following conclusions were obtained through the SRAC burnup calculation using the JENDL-3.3 original and modified library corresponding to the new measurement of 157Gd by Leinweber et al. The correction factors for 157Gd capture cross sections for SRAC calculations are
Page 3:
JAEA-Conf 2011-002 Proceedings of t
Page 7:
JAEA-Conf 2011-002 31. Preliminary
Page 12 and 13:
6.2 Measurement of neutron-induced
Page 14 and 15:
This is a blank page.
Page 16 and 17:
JAEA-Conf 2011-002 Table 1 Comparis
Page 18 and 19:
JAEA-Conf 2011-002 (T1/2=8,900,000
Page 20 and 21:
JAEA-Conf 2011-002 Though words too
Page 22 and 23:
JENDL-3.3 showed better applicabili
Page 24 and 25:
ENDF. Thus this cross section store
Page 26 and 27:
Acknowledgement JAEA-Conf 2011-002
Page 28 and 29:
In the MALIBU program, isotope conc
Page 30 and 31:
some minor actinides. For major act
Page 32 and 33:
JAEA-Conf 2011-002 code MVP-BURN an
Page 34 and 35:
JAEA-Conf 2011-002 [3] Measurements
Page 36 and 37:
3.1 Experimental Set up JAEA-Conf 2
Page 38 and 39:
References JAEA-Conf 2011-002 [1] N
Page 40 and 41:
JAEA-Conf 2011-002 was large. The a
Page 42 and 43:
JAEA-Conf 2011-002 4. Results and D
Page 44 and 45:
Acknowledgments Present study inclu
Page 46 and 47:
Fig. 1 A conceptural picture of the
Page 48 and 49:
4. Theoretical studies Theoretical
Page 50 and 51:
JAEA-Conf 2011-002 Fig.9 Comparison
Page 52 and 53:
Ion source JAEA-Conf 2011-002 LE
Page 54 and 55:
JAEA-Conf 2011-002 3. Readiness
Page 56 and 57:
JAEA-Conf 2011-002
Page 58 and 59:
JAEA-Conf 2011-002 Figure 1. An exa
Page 60 and 61:
JAEA-Conf 2011-002 Figure 6. Compar
Page 62 and 63:
JAEA-Conf 2011-002 calculation of d
Page 64 and 65:
JAEA-Conf 2011-002 equilibrium emis
Page 66 and 67:
JAEA-Conf 2011-002 Cowley et al. [1
Page 68 and 69:
4. Conclusions We have compared nuc
Page 70 and 71:
of MeV region with highest cosmic-r
Page 72 and 73:
JAEA-Conf 2011-002 events can be id
Page 74 and 75:
JAEA-Conf 2011-002 models and its p
Page 76 and 77:
JAEA-Conf 2011-002
Page 78 and 79:
JAEA-Conf 2011-002
Page 80 and 81:
JAEA-Conf 2011-002 xx
Page 82 and 83:
JAEA-Conf 2011-002 1. The recent ac
Page 84 and 85:
JAEA-Conf 2011-002 4. Conceptual de
Page 86 and 87:
Page 88 and 89:
The Institute's staff of about 280
Page 90 and 91:
3. Nuclear Theory Laboratory JAEA-C
Page 92 and 93:
JAEA-Conf 2011-002 References [1] P
Page 94 and 95:
JAEA-Conf 2011-002 reaction 6 Li +
Page 96 and 97:
Using the approximated distribution
Page 98 and 99:
Page 100 and 101:
momentum of the constituents of P.
Page 102 and 103:
dσ/dΩ (mb/sr) c.m. scattering ang
Page 104 and 105:
JAEA-Conf 2011-002 [2] N. Austern,
Page 106 and 107:
moderating fast neutrons emitted fr
Page 108 and 109:
JAEA-Conf 2011-002 3. Results and d
Page 110 and 111:
JAEA-Conf 2011-002 the detection de
Page 112 and 113:
Fig.1. Experimental arrangement for
Page 114 and 115:
in this work was confirmed. (2) 153
Page 116 and 117:
Neutron Capture Cross Section of 15
Page 118 and 119:
ENDF resonance parameters are based
Page 120 and 121:
sample changer. The measured flux s
Page 122:
REFERENCES JAEA-Conf 2011-002 [1] W
Page 125 and 126:
JAEA-Conf 2011-002 Fig. 4: The rela
Page 127:
Fig. 10: The PHITS2 calculation geo
Page 130 and 131:
for such a low energy region should
Page 132 and 133:
MCNPX calculation was performed bas
Page 134 and 135:
JAEA-Conf 2011-002 We measured dou
Page 136 and 137:
1mm-thick carbon target 22mm in dia
Page 138 and 139:
JAEA-Conf 2011-002 Figure 2 shows e
Page 140 and 141:
The double-differential (n,xp) and
Page 142 and 143:
JAEA-Conf 2011-002 forward angles.
Page 144 and 145: Fig.3. Two-dimensional plot of PI v
Page 146 and 147: JAEA-Conf 2011-002 Fig. 7. Deuteron
Page 148 and 149: JAEA-Conf 2011-002 The new detector
Page 150 and 151: 4. Off line data analysis Double di
Page 152 and 153: eports of data of carbon-ion incide
Page 154 and 155: Count [-] 4 10 3 10 2 10 10 1 Charg
Page 156 and 157: Acknowledgement We are grateful to
Page 158 and 159: Beam Line BM1 Copper Target BM2 5×
Page 160 and 161: φ = φbm · ρtof · ρmulti (2) E
Page 162 and 163: References [1] K. Ishibashi, H. Tak
Page 164 and 165: JAEA-Conf 2011-002 hint at the orig
Page 166 and 167: Neutron Dose Rate [Sv/hr/src neutro
Page 168 and 169: JAEA-Conf 2011-002 radiation protec
Page 170 and 171: Ztarget, Atarget are the numbers fo
Page 172 and 173: We described our formalism for calc
Page 174 and 175: 2. Model
Page 176 and 177: JAEA-Conf 2011-002
Page 180 and 181: JAEA-Conf 2011-002 reactions. Figur
Page 182 and 183: JAEA-Conf 2011-002 Fig. 3. The angu
Page 184 and 185: This is a blank page.
Page 192 and 193: analysis of integral experiments [6
Page 196 and 197: JAEA-Conf 2011-002 approximately 0.
Page 198 and 199: JAEA-Conf 2011-002 constructing the
Page 200 and 201: Fig.9 Spectrum of gamma-ray followi
Page 204 and 205: JAEA-Conf 2011-002 in the same way
Page 206 and 207: JAEA-Conf 2011-002 [7]. For example
Page 210 and 211: JAEA-Conf 2011-002 For
Page 216 and 217: JAEA-Conf 2011-002 (5.0-9.0MeV), a
Page 218 and 219: components, the 0.56Wt% for hydroge
Page 222 and 223: Sensitivities of curium isotope con
Page 224 and 225: decreases of (n,g) reaction rates,
Page 226 and 227: 5. Conclusion JAEA-Conf 2011-002 Wi
Page 228 and 229: 2. Foundation of sensitivity analys
Page 230 and 231: JAEA-Conf 2011-002 where f g and f
Page 232 and 233: Fig.1 Sensitivity coefficient of th
Page 234 and 235: An outline of core configurations o
Page 236 and 237: 0.010% 0.000% -0.010% -0.020% -0.03
Page 238 and 239: To clarify what nuclides and reacti
Page 240 and 241: Calculation was performed by the MV
Page 242 and 243: among these libraries, and the diff
Page 244 and 245:
Page 246 and 247:
JAEA-Conf 2011-002
Page 248 and 249:
JAEA-Conf 2011-002
Page 250 and 251:
JAEA-Conf 2011-002
show all

JAEA-Conf 2011-002 - 日本原子力研究開発機構

Create successful ePaper yourself

Delete template?

Save as template?