Static and Kinetic Experiments on Accelerator-Driven System with 14MeV Neutrons in Kyoto University Critical Assembly

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概要

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• In preparation for connecting a Fixed Field Alternating Gradient (FFAG) accelerator at the Kyoto University Critical Assembly (KUCA), static and kinetic experimental and numerical analyses of Accelerator-Driven System (ADS) are envisaged. Improvement of source multiplication by the implementation of a neutron guide is expected to affect the characteristics of the ADS core. The effects on reactivity and neutron flux distribution are investigated by measurements of the subcriticality and the reaction rate distributions of indium wire, respectively, using the KUCA core and the current 14 MeV pulsed neutron generator. A comparison of the results of static measurements with those of calculations provides an estimation of MCNP-4C3 precision with JENDL-3.3 and ENDF/B-VI.2 for the basic research on ADS with 14 MeV neutrons at KUCA. The neutron guide has proved to be experimentally effective in improving external source when it is extended into the fuel region. Since the reactivity range of the actual ADS operation is expected to be around 3%Δk⁄k, the validity of both measurements and calculations has been demonstrated up to 6%Δk⁄k for the current KUCA cores. The prompt neutron decay constant is obtained by the pulsed neutron method, and subcriticality by the area ratio method, using an optical fiber detection system developed at KUCA. The optical fiber detector has been assessed as a promising original tool for the measurements of the subcriticality and prompt neutron decay constant, through ADS kinetic experiments with 14 MeV neutrons.

• 社団法人 日本原子力学会の論文
• 2008-11-01

著者

• 宇根崎 博信

  京大

• IWASAKI Tomohiko

  Department of Quantum Science and Energy Engineering, Tohoku University

• PYEON Cheol

  Nuclear Engineering Science Division, Research Reactor Institute, Kyoto University

• MISAWA Tsuyoshi

  Nuclear Engineering Science Division, Research Reactor Institute, Kyoto University

• Tomohiko Iwasaki

  Department Of Quantum Science And Energy Engineering Graduate School Of Engineering Tohoku Universit

• 宇根崎 博信

  京大 炉

• 三澤 毅

  Nuclear Engineering Science Division Research Reactor Institute Kyoto University

• SHIROYA Seiji

  Research Reactor Institute, Kyoto University

• Shiroya S

  Nuclear Engineering Science Division Research Reactor Institute Kyoto University

• Shiroya S

  Nuclear Energy Science Division Reserch Ractor Institute Kyoto University

• Shiroya S

  Research Reactor Institute Kyoto University

• Shiroya S

  Kyoto Univ.

• Pyeon Cheol

  Nuclear Engineering Sci. Div. Res. Reactor Inst. Kyoto Univ.

• Shiroya S

  Kyoto Univ. Osaka

• Shiroya Seiji

  Nuclear Engineering Science Division Research Reactor Institute Kyoto University

• Shiroya Seiji

  Research Reactor Institute Kyoto University

• Shiroya Seiji

  Nuclear Energy Science Division Research Reactor Institute Kyoto University

• UNESAKI Hironobu

  Nuclear Engineering Science Division, Research Reactor Institute, Kyoto University

• HERVAULT Morgan

  Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University

• Shiroya Seiji

  Nuclear Energy Science Division Reserch Ractor Institute Kyoto University

• Misawa Tsuyoshi

  Nuclear Engineering Science Division Research Reactor Institute Kyoto University

• Unesaki Hironobu

  Nuclear Energy Science Division Research Reactor Institute Kyoto University

• Iwasaki Tomohiko

  Department Of Cardiology Heart Institute Of Japan Tokyo Women's Medical College

• Hervault Morgan

  Department Of Fundamental Energy Science Graduate School Of Energy Science Kyoto University

• Unesaki H

  Nuclear Engineering Science Division Research Reactor Institute Kyoto University

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