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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. Lee
  • S. 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
*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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
Volume592
Issue number3
DOIs
Publication statusPublished - 2008 Jul 21
Externally publishedYes

Bibliographical note

Funding Information:
Construction of these large-scale vetoes within such a short time period would not have been possible without substantial contributions from technical staff members of collaborating institutes and companies. We express our sincere thanks to them. A mechanical design of the calorimeter was made by ENTEK-HTTC, Russia, under the ISTC (International Science Technology Center) program No. 2118. Part of this work was financially supported by a Grant-in-Aid for Scientific Research of the Ministry of Education, Science, Sports and Culture of Japan.

Keywords

  • 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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