JAEA-Conf 2011-002 - 日本原子力研究開発機構

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JAEA-Conf 2011-002 code MVP-BURN and its application to analysis of post irradiation experiment," J. Nucl. Sci. Technol., , 128 (2000). 9) A. Koning, R. Forrest, M. Kellett et al. (Eds.), The JEFF-3.1 Nuclear Data Library, JEFF Report 21, OECD/NEA (2006). 10) K. Tasaka, J. Katakura, H. Ihara et al., JNDC Nuclear Data Library of Fission ProductsSecond Version, JAERI 1320, Japan Atomic Energy Research Institute (JAERI) (1990). 11) T. Ito, Y. Kanayama, S. Matsuoka, "Burnup determination by using Multiple Burnup Indicators for MALIBU high burnup samples," Proc. of Int. Conf. on the Physics of Reactors "Nuclear Power: A sustainable Resource" (PHYSOR 2008), Interlaken, Switzerland, Sept. 14-19 (2008).
JAEA-Conf 2011-002 5. Measurements of Neutron-Capture Cross Sections at J-PARC/MLF/ANNRI (1) Measurements of Neutron-Capture Cross Sections of Minor Actinides using a high intensity pulsed neutron source A. KIMURA*, T. FUJII1 , S. FUKUTANI1 , K. FURUTAKA, S. GOKO * , H. HARADA, J. HORI1 , M. IGASHIRA2 , T. KAMIYAMA3 , T. KATABUCHI2 , T. KIN, K. KINO3** , F. KITATANI, Y. KIYANAGI 3 , M. KOIZUMI, M. MIZUMOTO2 , S. NAKAMURA, M. OHTA *** , M. OSHIMA, K. TAKAMIYA1 , and Y. TOH Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency 2-4 Shirakata Shirane, Tokai, Naka, Ibaraki 319-1195, Japan 1Research Reactor Institute, Kyoto University 2 Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology 3Graduate School of Engineering, Hokkaido University * Present address: Graduate School of Engineering, Hokkaido University ** Present address: High Energy Accelerator Research Organization *** Present address: Center of Atomic and Molecular Technology, Osaka University Email: Kimura.atsushi04@jaea.go.jp In order to improve data accuracy of neutron-capture cross sections of minor actinides (MAs) and long-lived fission products (LLFPs), a new experimental instrument named “Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI)” has been constructed in the Materials and Life science experimental Facility at the Japan Proton Accelerator Research Complex, and measurements of neutron-capture cross sections of MAs and LLFPs with high intensity pulsed neutrons have been started. Together with a brief view of ANNRI, preliminary neutron-capture cross sections of 244Cm and 246Cm are reported as examples of the measurements of the MAs. 1. Introduction Accurate data of neutron-capture cross sections of minor actinides (MAs) and long-lived fission products (LLFPs) are being required to estimate the production and the transmutation rates in the field of nuclear systems such as transmutation of radioactive waste and various innovative reactor systems[1-2]. However, accurate measurements of these cross sections are very difficult due to high radioactivity of these samples. To satisfy these demands, Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) has been developed by the collaboration of Hokkaido University, Tokyo Institute of Technology and JAEA. ANNRI is located on the Beam Line No. 04 of the Materials and Life science experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC).
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JAEA-Conf 2011-002 1. The recent ac
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JAEA-Conf 2011-002 4. Conceptual de
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The Institute's staff of about 280
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3. Nuclear Theory Laboratory JAEA-C
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JAEA-Conf 2011-002 References [1] P
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JAEA-Conf 2011-002 reaction 6 Li +
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Using the approximated distribution
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momentum of the constituents of P.
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dσ/dΩ (mb/sr) c.m. scattering ang
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JAEA-Conf 2011-002 [2] N. Austern,
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moderating fast neutrons emitted fr
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JAEA-Conf 2011-002 3. Results and d
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JAEA-Conf 2011-002 the detection de
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Fig.1. Experimental arrangement for
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in this work was confirmed. (2) 153
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Neutron Capture Cross Section of 15
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ENDF resonance parameters are based
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sample changer. The measured flux s
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REFERENCES JAEA-Conf 2011-002 [1] W
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JAEA-Conf 2011-002 Fig. 4: The rela
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Fig. 10: The PHITS2 calculation geo
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for such a low energy region should
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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 reactions. Figur
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JAEA-Conf 2011-002 Fig. 3. The angu
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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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