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A study of reactor neutrino monitoring at the experimental fast reactor JOYO |
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| Authors: | H. Furuta Y. FukudaT. Hara T. Haruna N. IshiharaM. Ishitsuka C. ItoM. Katsumata T. KawasakiT. Konno M. KuzeJ. Maeda T. MatsubaraH. Miyata Y. NagasakaK. Nitta Y. SakamotoF. Suekane T. SumiyoshiH. Tabata M. TakamatsuN. Tamura |
| Affiliation: | a Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan b Department of Physics, Miyagi University of Education, Sendai 980-0845, Japan c Department of Physics, Kobe University, Kobe 657-8501, Japan d Department of Physics, Tokyo Metropolitan University, Hachioji 192-0397, Japan e Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan f Experimental Fast Reactor Department, Oarai Research and Development Center, Japan Atomic Energy Agency (JAEA), Oarai 311-1393, Japan g Department of Physics, Niigata University, Niigata 950-2181, Japan h Department of Computer Science, Hiroshima Institute of Technology, Hiroshima 731-5193, Japan i Department of Information Science, Tohoku Gakuin University, Sendai 981-3193, Japan j Department of Physics, Tohoku University, Sendai 980-8578, Japan |
| Abstract: | 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 on-off 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. |
| Keywords: | Reactor neutrino Neutrino oscillation Cosmic ray Radioactivity Low background |
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