JAEA-Conf 2011-002 - 日本原子力研究開発機構

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JAEA-Conf 2011-002 The new detector system enables nuclear data measurement in a 600-MeV range. It utilizes both the Pulse Height and TOF in proton measurements. The detector concept is illustrated briefly in the Fig.1, it consists from two sections; one is a crystal detector based on the ordinal E-E method, and the other the TOF section following the crystal. The detector proposed presently is expected to offer the best characteristics in fulfilling the required specifications, such as energy resolution and the energy acceptance. Fig.2. Our experimental setup. We used the setup [Fig.2.] for the BGO light output measurement for Proton and Alpha particles. In this case the beam energy is changed using a degrader. The light output response of a BGO crystal was measured using Proton and 4 He ions of energy ranges from 25 MeV up to 100 MeV. Experiments were made at the cyclotron facility National Institute of Radiological Sciences (NIRS), Japan. The energy dependence is found to be interpreted well by the Birks equation [1], consistent with the presented data from Ref. [2]. Fig.3. Light output response of BGO to proton (left) and 4 He (right).
3. Peak efficiency calculation JAEA-Conf 2011-002 The peak efficiency of the BGO detector, which is required for the accurate determination of the DDX (Double Differential Cross Sections), was also investigated in terms of nuclear reactions and multiple Coulomb scattering. Since the yield obtained from the experiments is less than the incident on the detector, the Peak efficiency needs to be corrected; the yield obtained from the experiments is divided on true (total) yield: Were NPeak is the Yield obtained from the experiments and the NTotal is the true yield. Fig. 4. Peak efficiency of the BGO detector. In Fig. 4 are shown the peak efficiency curves of a BGO crystal to charged particles as the function of particle energy. They were calculated by a Monte Carlo procedure, which takes multiple coulomb scattering and nuclear reactions into consideration.
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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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JAEA-Conf 2011-002 code MVP-BURN an
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JAEA-Conf 2011-002 [3] Measurements
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3.1 Experimental Set up JAEA-Conf 2
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References JAEA-Conf 2011-002 [1] N
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JAEA-Conf 2011-002 was large. The a
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JAEA-Conf 2011-002 4. Results and D
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Acknowledgments Present study inclu
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Fig. 1 A conceptural picture of the
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4. Theoretical studies Theoretical
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JAEA-Conf 2011-002 Fig.9 Comparison
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Ion source JAEA-Conf 2011-002 LE
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JAEA-Conf 2011-002 3. Readiness
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JAEA-Conf 2011-002
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JAEA-Conf 2011-002 Figure 1. An exa
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JAEA-Conf 2011-002 Figure 6. Compar
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JAEA-Conf 2011-002 calculation of d
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JAEA-Conf 2011-002 equilibrium emis
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JAEA-Conf 2011-002 Cowley et al. [1
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4. Conclusions We have compared nuc
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of MeV region with highest cosmic-r
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JAEA-Conf 2011-002 events can be id
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JAEA-Conf 2011-002 models and its p
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JAEA-Conf 2011-002 xx
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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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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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