The purpose of RCNS is to study elementary particle physics, geophysics and astrophysics through detecting low-energy neutrinos and antineutrinos.Neutrinos are fundamental particles of the nature like quarks and charged leptons, but unlike others they are electrically neutral and quite difficult to be detected, and many characteristics of neutrinos have not been known yet. The bubble chamber physics laboratory was established in 1971 for the purpose of elementary particle researches. The laboratory has been reorganized to Research Center for Neutrino Science (RCNS) Graduate School of Science, Tohoku University in April 1998, aiming at evolving neutrino research, neutrino geophysics and neutrino astronomy with the Kamioka liquid scintillator anti-neutrino detector (KamLAND) built at 1000m underground of the Kamioka mine in Hida-city, Gifu-prefecture.