Author/Authors :
Furuta، نويسنده , , H. and Fukuda، نويسنده , , Y. and Hara، نويسنده , , T. and Haruna، نويسنده , , John T. and Ishihara، نويسنده , , N. and Ishitsuka، نويسنده , , M. and Ito، نويسنده , , C. and Katsumata، نويسنده , , M. and Kawasaki، نويسنده , , T. and Konno، نويسنده , , T. and Kuze، نويسنده , , M. and Maeda، نويسنده , , J. and Matsubara، نويسنده , , T. and Miyata، نويسنده , , H. and Nagasaka، نويسنده , , Y. and Nitta، نويسنده , , K. and Sakamoto، نويسنده ,
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 , Cosmic ray , RADIOACTIVITY , Neutrino oscillation , Low background
