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Nakao, Taro; Terada, Kazushi; Kimura, Atsushi; Nakamura, Shoji; Iwamoto, Osamu; Harada, Hideo; Katabuchi, Tatsuya*; Igashira, Masayuki*; Hori, Junichi*
EPJ Web of Conferences, 146, p.03021_1 - 03021_4, 2017/09
Times Cited Count：7 Percentile：96.32(Nuclear Science & Technology)A new data acquisition system (DAQ system) in J-PARC Materials and Life Science Experimental Facility (MLF) ANNRI was developed. Increasing beam power of MLF in recent years allows beam line users to obtain high quantity experimental data yields. Compared to 2008, more than 20 times beam current is achieved in 2015. For the purpose to correspond strong beam power of MLF, a new DAQ system for the array of the Ge detectors in ANNRI is developed. The DAQ system is also going to be used for processing signals from a Li glass detector, which is under development at ANNRI for measurement of total neutron cross sections. Commissioning experiment of a new DAQ system at ANNRI was performed by using 0.1mmt Au sample with 500kW J-PARC proton beam power. An applicability of time-of-flight method for both neutron capture and total cross-sections measurements was checked. ADC and TDC nonlinearity, energy resolution, multi-channel coincidence and dead time performance for the array of the Ge detectors were also evaluated. The dead time value for Ge detectors was successfully decreased to 1/4 from the previous DAQ system with minor deterioration on energy resolution. The author would like to thank the accelerator and technical staff at J-PARC for operation of the accelerator and the neutron production target and for the other experimental supports. Present study includes the result of "Research and Development for accuracy improvement of neutron nuclear data on minor actinides" entrusted to the Japan Atomic Energy Agency by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
*; *
JNC TJ9400 2000-004, 109 Pages, 2000/02
JNC-TJ9400-2000-004.pdf:4.96MB
We estimated covariances of the JENDL-3.2 data on the nuclides and reactions needed to analyze fast-reactor cores for the past three years, and produced covariance files. The present work was undertaken to re-examine the covariance files and to make some improvements. The covariances improved are the ones for the inelastic scattering cross section of 
O, the total cross section of 
Na, the fission cross section of 
U, the capture cross section of 
U, and the resolved resonance parameters for U. Moreover, the covariances of 
U data were newly estimated by the present work. The covariances obtained were compiled in the ENDF-6 format.
Nakamua, Masahiro*; Shibata, Keiichi
JAERI-Research 95-068, 51 Pages, 1995/10
JAERI-Research-95-068.pdf:1.38MB
no abstracts in English
Pufrom transmission measurements in the energy range of 1
500 keVH.Derrien*
Journal of Nuclear Science and Technology, 29(8), p.794 - 804, 1992/08
no abstracts in English
JAERI-M 86-193, 9 Pages, 1987/01
no abstracts in English
*; ;
JAERI-M 8739, 36 Pages, 1980/03
no abstracts in English
*;
JAERI-M 7915, 70 Pages, 1978/10
no abstracts in English
AmNakagawa, Tsuneo; Fuketa, Toyojiro;
JAERI-M 6636, 36 Pages, 1976/06
no abstracts in English
; ; Fuketa, Toyojiro;
JAERI 1218, 56 Pages, 1971/10
no abstracts in English
Np by TOF method at KURRI-LINACHori, Junichi*; Yashima, Hiroshi*; Sano, Tadafumi*; Takahashi, Yoshiyuki*; Harada, Hideo
no journal, ,
Neutron capture and total cross sections of Np have been measured by utilizing neutron time-of-flight method at KURRI-LINAC facility under the frame work of the research project "R&D for accuracy improvement of neutron nuclear data on minor actinides". Obtained results are compared with reported measurement values and evaluated data.
TaEndo, Shunsuke; Kimura, Atsushi; Nakamura, Shoji; Iwamoto, Osamu; Iwamoto, Nobuyuki; Rovira Leveroni, G.
no journal, ,
no abstracts in English
Kimura, Atsushi; Endo, Shunsuke; Nakamura, Shoji; Rovira Leveroni, G.
no journal, ,
no abstracts in English
Kimura, Atsushi; Endo, Shunsuke; Nakamura, Shoji; Rovira Leveroni, G.
no journal, ,
no abstracts in English
