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Study of a BGO calorimeter using electron and hadron beams from 1 to 50 GeV
Authors:JA Bakken  L Barone  D Braun  M Caillat  C Dionisi  C Dor  H Elmamouni  F Ferroni  GL Grazer  JT He  R Herbiet  B Ille  P Lecomte  E Longo  PF Loverre  YS Lu  JP Martin  U Micke  RP Mount  PA Pirou  H-G Sander  D Schmitz  M Schneegans  DP Stickland  RL Sumner  KL Tung  E Valente  M Vivargent
Affiliation:

1)Physikalisches Institut, RWTH, D-5100 Aachen, Fed. Rep. Germany

2)CERN, Geneva, Switzerland

3)California Institute of Technology, Pasadena, CA 91125, USA

4)LAPP, Annecy-le-Vieux, F74019, France

5)Institut de Physique Nucléaire, Université de Lausanne, Switzerland

6)Institut de Physique Nucléaire, IN2P3, Lyon, France

7)Princeton University, Princeton, NJ 08544, USA

8)Dipartimento di Fisica, Universita “la Sapienza”, Rome, and INFN Sezione de Roma, 100185 Rome, Italy

9)ETH Zurich, CH-8093 Zurich, Switzerland

Abstract:A calorimeter of 25 bismuth germanate (BGO) crystals equipped with silicon photodiode readout has been tested at the CERN SPS in the energy range 1–50 GeV. The response for electrons has been shown to be linear in this energy range and the rms resolution obtained (Image ) is approximately 1%, for E > 4 GeV. The electron/pion separation was found to be better than 1:500 in the energy range 1–20 GeV. Data on lateral and longitudinal shower development were compared with the results of a Monte Carlo simulation using the SLAC-EGS program and found to be in good agreement.
Keywords:
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