Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 615, Issue 1, Pages 6-13Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2009.12.061
Keywords
Electromagnetic calorimeter; Sampling calorimeter; Energy resolution; Position resolution; Hadron rejection factor
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Funding
- Helsinki Institute of Physics
- Academy of Finnland
- 'Region Pays de Loire'
- 'Region Alsace'
- 'Region Auvergne'
- CEA, France
- Istituto Nazionale di Fisica Nucleare (INFN) of Italy
- Office of Nuclear Physics
- United States National Science Foundation
- [CNRS/IN2P3/INPG]
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The performance of prototypes for the ALICE electromagnetic sampling calorimeter has been studied in test beam measurements at FNAL and CERN. A 4 x 4 array of final design modules showed an energy resolution of about 11%/root E(GeV) circle plus 1.7% with a uniformity of the response to electrons of 1% and a good linearity in the energy range from 10 to 100 GeV. The electromagnetic shower position resolution was found to be described by 1.5 min circle plus 5.3 mm/root E(GeV). For an electron identification efficiency of 90% a hadron rejection factor of >600 was obtained. (C) 2009 Elsevier B.V. All rights reserved.
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