Barrel photon detector of the KEK K L 0 → π 0 ν over(ν, -) experiment

Y. Tajima, J. K. Ahn, Y. Akune, Y. Aruga, M. Doroshenko, Y. B. Hsiung, A. Iijima, Y. Ikemoto, T. Inagaki, S. Ishibashi, N. Ishihara, H. Ishii, M. Itaya, M. Iwai, T. Iwata, S. Kobayashi, S. Komatsu, T. K. Komatsubara, A. S. Kurilin, H. S. LeeS. Y. Lee, G. Y. Lim, T. Matsumura, A. Miura, T. Mizuhashi, H. Morii, T. Morimoto, T. Nomura, N. Nishi, J. Nix, H. Okuno, K. Omata, G. N. Perdue, S. Perov, S. Podolsky, K. Sakashita, H. Sato, T. Sato, M. Sekimoto, T. Shinkawa, Y. Sugaya, T. Sumida, Z. Tsamalaidze, Y. Wah, H. Watanabe, M. Yamaga, T. Yamanaka, H. Y. Yoshida, Y. Yoshimura

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Large lead/scintillator sandwich-type photon detectors, sensitive to visible energy depositions of 1 MeV, have been built for the K L 0 → π 0 ν over(ν, -) experiment at the KEK 12-GeV proton synchrotron. The front barrel (FB) is composed of 16 modules with a length of 2.75 m, forming the 1.5 m-diameter cylinder. The main barrel (MB) is composed of 32 modules with a length of 5.5 m, forming a 3.5 m-diameter cylinder. Scintillation light is read out through wavelength-shifter (WLS) fibers. In this paper, the design, construction and performance of these detectors together with some R&D results are reported.

Original languageEnglish
Pages (from-to)261-272
Number of pages12
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
Publication statusPublished - 2008 Jul 21
Externally publishedYes


  • Kaon rare decay
  • Lead/scintillator sandwich-type photon detector
  • Wavelength-shifter (WLS) fiber readout

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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