JAEA-Conf 2011-002 - 日本原子力研究開発機構

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JAEA-Conf 2011-002 4. Conceptual design of KAERI photo-neutron source KAERI (Korea Atomic Energy Research Institute) is developing a neutron TOF facility by using KAERIs electron accelerator. KAERI has a superconducting electron accelerator which can produce 17 MeV pulsed electron beams with a pulse width of 20 ps. The pulse current and maximum frequency of the electron accelerator are 20 A and 2 MHz respectively. Fast neutrons with energy of a few hundreds keV and a few MeV can be used for cross-section measurements. A short pulse width can provide a good neutron energy resolution for fast neutrons at relatively short flight lengths. The time resolution related to the neutron source target should be small enough to utilize the short pulse. We adopted the liquid Pb target which was developed by FDZ (Forschungszentrum Dresden-Rossendorf). The first step of the neutron source development is to simulate the neutron production. MCNPX was used to simulate the neutron production when an electron beam irradiates the Pb target. Those simulations were performed by varying the electron beam diameter, beam energy and target size to find out optimal variables related to the beam and target. The dissipated heat information was studied by MCNPX since a proper cooling system should be considered to operate the liquid Pb target safely. The thermal-hydraulic analysis was performed based on the dissipated heat information. The thermal stress calculation of the target wall was also performed from the temperature information obtained by the thermal-hydraulic analysis. The study of the detection system is under progress. The design of experimental hall and collimator is also being progressed with the development of the detection system. We plan to finish the design of the facility by 2011 and start the construction at 2012.
5. Nuclear Data vs. KoRIA JAEA-Conf 2011-002 Conceptual design of Korea Rare Isotope Accelerator (KoRIA) project started as of March 2010. Korean Nuclear data network led by NDEL is proposing a utilization plan of KoRIA for the nuclear data production as follows: -Neutron data for GEN-VI and fusion device using d + light targets and spallation n source, -Nuclear data for waste transmutation using In-flight and ISOL facilities, and -Nuclear data from Surrogate reactions using heavy ion sources. Nuclear data measurements can be performed using beams provided by KoRIA. There are three possible research topics related to the nuclear data measurements at KoRIA. Those three research topics utilize fast neutrons, spallation neutrons and charged particles respectively. Among three research topics, the priority is given to the nuclear data measurements using fast neutrons. Fast neutrons can be produced by proton and deuteron beams coming from the cyclotron of KoRIA. The thin Li target is bombarded by proton beam to produce mono-energy fast neutrons. Fast neutron nuclear data is essential in developing fast reactors, fusion reactors and accelerator-driven systems. At KoRIA, the fast neutron cross sections can be measured for the elements constituting the fuel and structural materials of the above-mentioned systems. The detection system is also being investigated for the measurements of capture, fission, elastic scattering and inelastic scattering cross sections.
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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 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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