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arXiv · 0912.2005

Performance of prototypes for the ALICE electromagnetic calorimeter

The ALICE EMCal group
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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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The ALICE EMCal group. 2009-12-10. Performance of prototypes for the ALICE electromagnetic calorimeter. https://doi.org/10.1016/j.nima.2009.12.061

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