Status Report for the 20th J-PARC PAC : A Search for Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2)

M. Harada; S. Hasegawa; Y. Kasugai; S. Meigo; K. Sakai; S. Sakamoto; K. Suzuya; E. Iwai; T. Maruyama; S. Monjushiro; K. Nishikawa; M. Taira; M. Niiyama; S. Ajimura; T. Hiraiwa; T. Nakano; M. Nomachi; T. Shima; T. J. C. Bezerra; E. Chauveau; H. Furuta; F. Suekane; I. Stancu; M. Yeh; H. Ray; G. T. Garvey; C. Mauger; W. C. Louis; G. B. Mills; R. Van de Water; J. Spitz

arXiv · 1507.07076

Status Report for the 20th J-PARC PAC : A Search for Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2)

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Abstract

On April 2015, the J-PARC E56 (JSNS2: J-PARC Sterile Neutrino Search using neutrinos from J-PARC Spallation Neutron Source) experiment officially obtained stage-1 approval from J-PARC. We have since started to perform liquid scintillator R&D for improving energy resolution and fast neutron rejection. Also, we are studying Avalanche Photo-Diodes (SiPM) inside the liquid scintillator. In addition to the R&D work, a background measurement for the proton beam bunch timing using a small liquid scintillator volume was planned, and the safety discussions for the measurement have been done. This report describes the status of the R&D work and the background measurements, in addition to the milestones required before stage-2 approval.

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M. Harada, S. Hasegawa, Y. Kasugai, S. Meigo, K. Sakai, S. Sakamoto, K. Suzuya, E. Iwai, T. Maruyama, S. Monjushiro, K. Nishikawa, M. Taira, M. Niiyama, S. Ajimura, T. Hiraiwa, T. Nakano, M. Nomachi, T. Shima, T. J. C. Bezerra, E. Chauveau, H. Furuta, F. Suekane, I. Stancu, M. Yeh, H. Ray, G. T. Garvey, C. Mauger, W. C. Louis, G. B. Mills, R. Van de Water, J. Spitz. 2015-07-25. Status Report for the 20th J-PARC PAC : A Search for Sterile Neutrino at J-PARC MLF (J-PARC E56, JSNS2). https://arxiv.org/abs/1507.07076

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