# Performance of prototypes for the ALICE electromagnetic calorimeter

Abstract : The performance of prototypes for the ALICE electromagnetic sampling calorimeter has been studied in test beam measurements at FNAL and CERN. A $4\times4$ array of final design modules showed an energy resolution of about 11% /$\sqrt{E(\mathrm{GeV})}$ $\oplus$ 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 mm $\oplus$ 5.3 mm /$\sqrt{E \mathrm{(GeV)}}$. For an electron identification efficiency of 90% a hadron rejection factor of $>600$ was obtained.
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Journal articles
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http://hal.in2p3.fr/in2p3-00440515
Contributor : Emmanuelle Vernay <>
Submitted on : Friday, December 11, 2009 - 9:42:54 AM
Last modification on : Thursday, November 19, 2020 - 12:58:48 PM

### Citation

J. Allen, T. Awes, A. Badala, S. Baumgart, R. Bellwied, et al.. Performance of prototypes for the ALICE electromagnetic calorimeter. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2010, 615, pp.6-13. ⟨10.1016/j.nima.2009.12.061⟩. ⟨in2p3-00440515⟩

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