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Pac, P. Gwak, R. Ujiie, S. Ajimura, S. B. Kim, S. Hasegawa, S. Jeon, S. J. M. Peeters, S. K. Kang, S. Meigo, S. Monjushiro, S. Sakamoto, S. Y. Kim, T. Dodo, T. Hiraiwa, T. Kawasaki, T. Konno, T. Maruyama, T. Nakano, T. Shima, W. Kim, Y. Hino, Y. Kasugai, Y. Sugaya","submitted_at":"2020-05-04T16:10:41Z","abstract_excerpt":"The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\\,m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium-loaded liquid scintillator (LS) and both the intermediate $\\gamma$-catcher and the optically separated outer veto are filled with un-loaded LS. Optical photons from scintillation are observed by 120 Photomultiplier Tubes (PMTs). A total of 130 PMTs for the JSNS2 experiment were both donated by other experiments and purchased from Hamamatsu. 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Zohaib, C. D. Shin, C. Rott, D. E. Jung, D. H. Lee, D. H. Moon, E. J. Kim, E. Kwon, E. Marzec, F. Suekane, H. Furuta, H. I. Jang, H. Jeon, H. Ray, H. Seo, I. Stancu, I. T. Lim, I. Yu, J. H. Choi, J. H. Seo, J. R. Jordan, J. S. Jang, J. S. Park, J. Spitz, J. Y. Kim, K. K. Joo, K. Nishikawa, K. Sakai, K. Suzuya, M. Botran, M. Harada, M. Jang, M. K. Cheoun, M. Niiyama, M. Nomachi, M. Taira, M. Yeh, M. Y. Pac, P. Gwak, R. Ujiie, S. Ajimura, S. B. Kim, S. Hasegawa, S. Jeon, S. J. M. Peeters, S. K. Kang, S. Meigo, S. Monjushiro, S. Sakamoto, S. Y. Kim, T. Dodo, T. Hiraiwa, T. Kawasaki, T. Konno, T. Maruyama, T. Nakano, T. Shima, W. Kim, Y. Hino, Y. Kasugai, Y. Sugaya","submitted_at":"2020-05-04T16:10:41Z","abstract_excerpt":"The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\\,m short baseline at J-PARC. 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