TY - JOUR
T1 - First beam test on a BSO electromagnetic calorimeter
AU - Shimizu, Hajime
AU - Miyahara, F.
AU - Hariu, H.
AU - Hayakawa, T.
AU - Ishikawa, T.
AU - Itaya, M.
AU - Iwata, T.
AU - Kinoshita, T.
AU - Moriya, M.
AU - Nakabayashi, T.
AU - Sasaki, T.
AU - Tajima, Y.
AU - Takita, S.
AU - Yamamoto, M.
AU - Yamazaki, Hirohito
AU - Yoshida, H. Y.
AU - Yoshida, Y.
N1 - Funding Information:
The authors would like to thank Prof. M. Ishii and Prof. M. Kobayashi for their help in growing up large BSO crystals. Thanks are also due to Prof. M. Taino and Prof. M. Ieiri for their help in preparation for the present experiment at KEK. This work was supported in part by the Grants-in Aid for Scientific Research of the Japanese Ministry of Education and Science (Nos. 15340069 and 17340063).
PY - 2005/9/11
Y1 - 2005/9/11
N2 - A beam test has been performed on a prototype electromagnetic calorimeter of bismuth silicate BSO crystals for the first time using electrons of 0.5-3.0 GeV. The calorimeter consists of nine BSO crystals, 22mm×22mm×180mm (15.6 radiation lengths), arranged in a 3×3 array. Each crystal is coupled to a small photomultiplier tube of 20 mm in diameter. The obtained energy resolution is σE/E=(0.023±0.003)/E(GeV)⊕(0.017±0.002) for incident electrons of the energy E in GeV. The position information for an electron injected onto the center crystal of the calorimeter array is given with energy deposit signals from nine BSO crystals. The RMS position resolution σx is parameterized as σx=[(3.2±0.1)/E(GeV)⊕(1. 3±0.1)]mm at the center of the crystal. Misidentification probability of pions to electrons is found to be ∼10-3 for the pion momentum ranging from 1.0 to 3.0 GeV/c.
AB - A beam test has been performed on a prototype electromagnetic calorimeter of bismuth silicate BSO crystals for the first time using electrons of 0.5-3.0 GeV. The calorimeter consists of nine BSO crystals, 22mm×22mm×180mm (15.6 radiation lengths), arranged in a 3×3 array. Each crystal is coupled to a small photomultiplier tube of 20 mm in diameter. The obtained energy resolution is σE/E=(0.023±0.003)/E(GeV)⊕(0.017±0.002) for incident electrons of the energy E in GeV. The position information for an electron injected onto the center crystal of the calorimeter array is given with energy deposit signals from nine BSO crystals. The RMS position resolution σx is parameterized as σx=[(3.2±0.1)/E(GeV)⊕(1. 3±0.1)]mm at the center of the crystal. Misidentification probability of pions to electrons is found to be ∼10-3 for the pion momentum ranging from 1.0 to 3.0 GeV/c.
KW - BSO
KW - Bismuth silicate
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U2 - 10.1016/j.nima.2005.06.040
DO - 10.1016/j.nima.2005.06.040
M3 - Article
AN - SCOPUS:24344484075
SN - 0168-9002
VL - 550
SP - 258
EP - 266
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2
ER -