A detailed test of a BSO calorimeter with 100-800 MeV positrons

T. Ishikawa, H. Fujimura, R. Hashimoto, S. Kaida, J. Kasagi, R. Kitazawa, S. Kuwasaki, A. Nakamura, K. Nawa, Y. Okada, M. Sato, H. Shimizu, K. Suzuki, Y. Tajima, S. Takahashi, Y. Tsuchikawa, H. Yamazaki, H. Y. Yoshida

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


A performance test has been made for an electro-magnetic calorimeter prototype comprised four identical BSO crystals arranged in a 2×2 matrix by utilizing a positron beam in the energy range from 100 to 800 MeV. The size of each crystal is 40×40×210 mm 3. This is the worlds largest BSO single crystal ever used as a photon detector. The obtained energy resolution is ( σE/E) 2=((1.71%±0.03%)/E) 2(1.12%±0.08%) 2 at room temperature, where E is the incident positron energy given in GeV. A BGO calorimeter having the same geometry has been employed in the performance test for comparison. The basic scintillation characteristics of BSO crystals measured without the beam are also presented.

Original languageEnglish
Pages (from-to)348-360
Number of pages13
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2012 Dec 1


  • BSO
  • Bismuth silicate
  • EM calorimeter

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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