JAEA-Conf 2011-002 - 日本原子力研究開発機構

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JAEA-Conf 2011-002 1. The recent activities under the international collaborations NDEL/KAERI collaborates with the international organizations such as IAEA and OECD/NEA, and the foreign institutes such as ORNL and BNL regarding the evaluation, processing and validation of nuclear data to satisfy present requests and to prepare future latent needs. Below summarizes the recent activities of NDEL/KAERI in collaboration with international organizations and foreign institutes. - Fusion Evaluated Nuclear Data Library (FENDL) CRP of IAEA - Participation in IAEA EXFOR compilations since 2009 - Contribution of group constant libraries to OECD/NEA Data Bank. - Evaluations and uncertainty analysis of Minor actinides with ORNL - Improvements of resonance module ncluding covariances with BNL - Evaluation of neutron cross sections for fast energy region with BNL 2. Production and validation of evaluated nuclear data 1) Developments of nuclear data evaluation methodology Recent evaluations of neutron cross section covariances in the resolved resonance region reveal the need for further research in this area. Major issues include declining uncertainties in multigroup representations and proper treatment of scattering radius uncertainty. A practical method is being investigated for estimating neutron radiative capture and elastic scattering covariances in the resolved resonance region. The method is based on a “kernel approximation” using resonance parameter uncertainties from the Atlas of Neutron Resonances. Suitable analytical expressions were derived from the consideration of cross section sensitivities in order to determine cross section uncertainties. The role of resonance-resonance and bin-bin correlations is specifically studied. 2) New evaluations of charged particle induced nuclear reactions - The evaluations are performing for reactions induced by charged particles including proton, deuteron, and alpha. The considered nuclides are 28-30 Si, 27 Al, 54,56,57,58 Fe, 92,94,95,96,97,98,100 Mo, 58,60,61,62,64 Ni. - Evaluations will go through validations and verifications by FENDL CRP. 3) New evaluations of minor actinides for Advanced Fuel Cycle (AFC) - Producing new evaluations for Advanced Fuel Cycle (AFC) including covariance files. The considered nuclides are 237 Np, 240 Pu, 240-250 Cm - Evaluation, validation and benchmarks are in collaboration with ORNL
JAEA-Conf 2011-002 3. Operation of nuclear data measurement facilities 1) Pohang Neutron Facility of PAL - Specifications: 50- 70 MeV beam energy, 30-70 mA beam current, 10-15Hz, TOF - Measurements of neutron total cross sections of Fe, Ho, Pd, Ni, Dy. - The photo-nuclear reaction for Ti, Nb, Mo, Cd, Pd, Ag, Au, Th, Er, W, Cu by using the Bremsstrahlung radiation by the electron beam with energies of 50, 60, and 70 MeV - BGO detector module was constructed by coupling the BGO crystal and PMT, and tested by using the radiation sources 2) Vand der Graaf of KIGAM - Monoenergetic pulsed neutron beam for energies 500 keV ~ 2.2 MeV with TOF - Measurements of total cross sections of Al and W - Productions of neutron sources with 4 MeV ~ 6.6 MeV using d-d reaction - Design of neutron sources at 14 MeV using d-T reaction 3) MC-50 of KIRAMS - Azimuthally-Varying Field-Type MC-50 cyclotron, Ep: 45 MeV, 50 nA beam current - Measurements of proton c.s. for nat W, nat Sn, nat Cd, 27 Al, nat Zr, nat Ag, nat Pd and nat T
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JAEA-Conf 2011-002 Proceedings of t
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JAEA-Conf 2011-002 31. Preliminary
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6.2 Measurement of neutron-induced
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JAEA-Conf 2011-002 Table 1 Comparis
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JAEA-Conf 2011-002 (T1/2=8,900,000
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JAEA-Conf 2011-002 Though words too
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JENDL-3.3 showed better applicabili
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ENDF. Thus this cross section store
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Acknowledgement JAEA-Conf 2011-002
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In the MALIBU program, isotope conc
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some minor actinides. For major act
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Page 44 and 45: Acknowledgments Present study inclu
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Page 88 and 89: The Institute's staff of about 280
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MCNPX calculation was performed bas
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JAEA-Conf 2011-002 We measured dou
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1mm-thick carbon target 22mm in dia
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JAEA-Conf 2011-002 Figure 2 shows e
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The double-differential (n,xp) and
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JAEA-Conf 2011-002 forward angles.
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Fig.3. Two-dimensional plot of PI v
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JAEA-Conf 2011-002 Fig. 7. Deuteron
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JAEA-Conf 2011-002 The new detector
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4. Off line data analysis Double di
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eports of data of carbon-ion incide
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Count [-] 4 10 3 10 2 10 10 1 Charg
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Acknowledgement We are grateful to
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Beam Line BM1 Copper Target BM2 5×
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φ = φbm · ρtof · ρmulti (2) E
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References [1] K. Ishibashi, H. Tak
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JAEA-Conf 2011-002 hint at the orig
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Neutron Dose Rate [Sv/hr/src neutro
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JAEA-Conf 2011-002 radiation protec
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Ztarget, Atarget are the numbers fo
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We described our formalism for calc
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2. Model
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JAEA-Conf 2011-002
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JAEA-Conf 2011-002
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JAEA-Conf 2011-002 reactions. Figur
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JAEA-Conf 2011-002 Fig. 3. The angu
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JAEA-Conf 2011-002
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analysis of integral experiments [6
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A modified SRAC library was prepare
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JAEA-Conf 2011-002 approximately 0.
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JAEA-Conf 2011-002 constructing the
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Fig.9 Spectrum of gamma-ray followi
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JAEA-Conf 2011-002 in the same way
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JAEA-Conf 2011-002 [7]. For example
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JAEA-Conf 2011-002 For
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JAEA-Conf 2011-002 (5.0-9.0MeV), a
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components, the 0.56Wt% for hydroge
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Sensitivities of curium isotope con
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decreases of (n,g) reaction rates,
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5. Conclusion JAEA-Conf 2011-002 Wi
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2. Foundation of sensitivity analys
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JAEA-Conf 2011-002 where f g and f
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Fig.1 Sensitivity coefficient of th
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An outline of core configurations o
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0.010% 0.000% -0.010% -0.020% -0.03
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To clarify what nuclides and reacti
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Calculation was performed by the MV
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among these libraries, and the diff
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JAEA-Conf 2011-002 - 日本原子力研究開発機構

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