Title of article
A detailed test of a BSO calorimeter with 100–800 MeV positrons
Author/Authors
Ishikawa، نويسنده , , T. and Fujimura، نويسنده , , H. and Hashimoto، نويسنده , , R. and Kaida، نويسنده , , S. and Kasagi، نويسنده , , J. and Kitazawa، نويسنده , , R. and Kuwasaki، نويسنده , , S. and Nakamura، نويسنده , , A. and Nawa، نويسنده , , K. and Okada، نويسنده , , Y. and Sato، نويسنده , , M. and Shimizu، نويسنده , , H. and Suzuki، نويسنده , , Tadasu K. and Tajima، نويسنده , , Y. and Takahashi، نويسنده , , S. and Tsuchikawa، نويسنده , , Y. and ، نويسنده ,
Pages
13
From page
348
To page
360
Abstract
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 mm3. This is the worldʹs largest BSO single crystal ever used as a photon detector. The obtained energy resolution is ( σ E / 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.
Keywords
EM calorimeter , Bismuth silicate , BSO
Journal title
Astroparticle Physics
Record number
2020021
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