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The JSNS2 detector

  • S. Ajimura
  • , M. Botran
  • , J. H. Choi
  • , J. W. Choi
  • , M. K. Cheoun
  • , T. Dodo
  • , H. Furuta
  • , J. Goh
  • , K. Haga
  • , M. Harada
  • , S. Hasegawa
  • , Y. Hino
  • , T. Hiraiwa
  • , H. I. Jang
  • , J. S. Jang
  • , M. C. Jang
  • , H. Jeon
  • , S. Jeon
  • , K. K. Joo
  • , J. R. Jordan
  • D. E. Jung, S. K. Kang, Y. Kasugai, T. Kawasaki, E. J. Kim, J. Y. Kim, S. B. Kim, W. Kim, H. Kinoshita, T. Konno, D. H. Lee, S. Lee, I. T. Lim, E. Marzec, T. Maruyama, S. Masuda, S. Meigo, S. Monjushiro, D. H. Moon, T. Nakano, M. Niiyama, K. Nishikawa, M. Nomachi, M. Y. Pac, J. S. Park, S. J.M. Peeters, H. Ray, G. Roellinghoff, C. Rott, K. Sakai, S. Sakamoto, T. Shima, C. D. Shin, J. Spitz, I. Stancu, Y. Sugaya, F. Suekane, K. Suzuya, M. Taira, R. Ujiie, Y. Yamaguchi, M. Yeh, I. S. Yeo, C. Yoo, I. Yu, A. Zohaib
  • The University of Osaka
  • University of Michigan, Ann Arbor
  • Dongshin University
  • Chonnam National University
  • Soongsil University
  • Tohoku University
  • Kyung Hee University
  • J-PARC Center
  • Japan Atomic Energy Agency
  • Seoyeong University
  • Gwangju Institute of Science and Technology
  • Sungkyunkwan University
  • Kitasato University
  • Jeonbuk National University
  • Kyungpook National University
  • High Energy Accelerator Research Organization, Tsukuba
  • Kyoto Sangyo University
  • University of Sussex
  • University of Florida
  • University of Utah
  • University of Alabama
  • Brookhaven National Laboratory

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The JSNS2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV2 mass-splitting range. The experiment will search for the appearance of electron antineutrinos oscillated from muon antineutrinos. The electron antineutrinos are detected via the inverse beta decay process using a liquid scintillator detector. A 1MW beam of 3GeV protons incident on a spallation neutron target produces an intense and pulsed neutrino source from pion, muon, and kaon decay at rest. The JSNS2 detector is located 24m away from the neutrino source and began operation from June 2020. The detector contains 17 tonnes of gadolinium (Gd) loaded liquid scintillator (LS) in an acrylic vessel, as a neutrino target. It is surrounded by 31 tonnes of unloaded LS in a stainless steel tank. Optical photons produced in LS are viewed by 120 R7081 Hamamatsu 10-inch Photomultiplier Tubes (PMTs). In this paper, we describe the JSNS2 detector design, construction, and operation.

Keywords

  • Liquid scintillator
  • Neutrino detector
  • Neutrino source from decay at rest
  • Sterile neutrino

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