A study of reactor neutrino monitoring at the experimental fast reactor JOYO

H. Furuta, Y. Fukuda, T. Hara, T. Haruna, N. Ishihara, M. Ishitsuka, C. Ito, M. Katsumata, T. Kawasaki, T. Konno, M. Kuze, J. Maeda, T. Matsubara, H. Miyata, Y. Nagasaka, K. Nitta, Y. Sakamoto, F. Suekane, T. Sumiyoshi, H. TabataM. Takamatsu, N. Tamura

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11 Citations (Scopus)


We carried out a study of neutrino detection at the experimental fast reactor JOYO using a 0.76 tons gadolinium loaded liquid scintillator detector. The detector was set up on the ground level at 24.3 m from the JOYO reactor core of 140 MW thermal power. The measured neutrino event rate from reactor onoff comparison was 1.11±1.24(stat.)±0.46(syst.) events/day. Although the statistical significance of the measurement was not enough, backgrounds in such a compact detector at the ground level were studied in detail and MC simulations were found to describe the data well. A study for improvement of the detector for future such experiments is also shown.

Original languageEnglish
Pages (from-to)90-100
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
Publication statusPublished - 2012 Jan 11


  • Cosmic ray
  • Low background
  • Neutrino oscillation
  • Radioactivity
  • Reactor neutrino


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