Measurements and Analysis of Neutron Flux Distribution in UTR-KINKI

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概要

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• The neutron flux distributions in UTR-KINKI are comprehensively analyzed in terms of the Au activation reaction rate and compared with those calculated by SRAC-CITATION and MCNP4C. The vertical distribution at the central stringer is found to be a cosine-like one with a smaller FWHM by about 15%, which is in good agreement with both simulation results within an RMS deviation of 2.4% and 2.1%, respectively.However, the CITATION fails to predict the horizontal distribution and humps in the vertical distribution in the fuel tank (FT) just outside the fuel meat due to low energy neutrons moderated in the H2O reflector region. It is suggested that the method of homogenization of the fuel assembly should be optimized to have satisfactory agreement with the measured distributions. On the contrary, the MCNP reproduces well the vertical distribution within the experimental uncertainty of ±3% in the FT and the horizontal distribution within the error of ±10%.From a little asymmetry of the distributions measured in the FT, it is implied that perturbation of the low energy neutron flux due to control rods or voids for them could be appreciable, and should be taken into account in the calculations in order to have even better agreement with the measured distributions.

• 社団法人 日本原子力学会の論文
• 2003-05-25

著者

• Matsumoto Jun

  Department of Geography, University of Tokyo

• Ohsawa Takaaki

  Department Of Nuclear Engineering Kinki University

• Kitamura A

  Department Of Nuclear Engineering Kobe University Of Mercantile Marine

• Kitamura Akira

  Department Of Molecular Cell Dynamics Faculty Of Advanced Life Science Hokkaido University

• FURUYAMA Yuichi

  Department of Nuclear Engineering, Kobe University of Mercantile Marine

• TANIIKE Akira

  Department of Nuclear Engineering, Kobe University of Mercantile Marine

• KUBOTA Naoyoshi

  Department of Nuclear Engineering, Kobe University of Mercantile Marine

• HASHIMOTO Kengo

  Atomic Energy Research Institute, Kinki University

• HORIGUCHI Tetuso

  Atomic Energy Research Institute, Kinki University

• TSURUTA Takao

  Atomic Energy Research Institute, Kinki University

• Matsumoto Jun

  Department Of Cardiovascular Center Toho University Sakura Hospital

• Kitamura Akira

  Tottori University Faculty Of Engineering

• Kitamura Akira

  Department Of Anesthesia Nippon Medical School

• Tsuruta Takao

  Atomic Energy Research Institute Kinki University

• Taniike Akira

  Department Of Nuclear Engineering Kobe University Of Mercantile Marine

• Kitamura A

  Tottori University Faculty Of Engineering

• Hashimoto Kengo

  Atomic Energy Research Institute Kinki University

• Kubota Naoyoshi

  Department Of Nuclear Engineering Kobe University Of Mercantile Marine

• Furuyama Yuichi

  Department Of Nuclear Engineering Kobe University Of Mercantile Marine

• Ohsawa Takaaki

  Department Of Electric And Electronic Engineering School Of Science And Engineering Kinki University

• Matsumoto J

  Department Of Nuclear Engineering Kobe University Of Mercantile Marine

• Matsumoto Jun

  Department Of Biology Keio University

• Horiguchi Tetuso

  Atomic Energy Research Institute Kinki University

• Matsumoto Jun

  Department Of Applied Chemistry Tokyo Metropolitan University

• Furuyama Yuichi

  Graduate School Of Maritime Sciences Kobe University

• Taniike Akira

  Graduate School Of Maritime Sciences Kobe University

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