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Performance of prototypes for the ALICE electromagnetic calorimeter

J. Allen T. Awes A. Badala S. Baumgart R. Bellwied L. Benhabib 1 C. Bernard 2 N. Bianchi F. Blanco Y. Bortoli 1 G. Bourdaud 1 O. Bourrion 2 B. Boyer 2 E. Bruna J. Butterworth H. Caines D. Calvo Diaz Aldagalan G.P. Capitani Y. Carcagno 2 A. Casanova Diaz M. Cherney G. Conesa Balbastre T.M. Cormier L. Cunqueiro Mendez H. Delagrange 1 M. del Franco M. Dialinas 1 P. Di Nezza A. Donoghue M. Elnimr A. Enokizono Magali Estienne 1 J. Faivre 2 A. Fantoni Francesco Fichera B. Foglio 2 S. Fresneau 1 J. Fujita C. Furget 2 S. Gadrat 2 I. Garishvili Marie Germain 1 N. Giudice Y. Gorbunov A. Grimaldi N. Guardone R. Guernane 2 C. Hadjidakis 1 J. Hamblen J.W. Harris D. Hasch M. Heinz P.T. Hille D. Hornback R. Ichou 1 P. Jacobs S. Jangal K. Jayananda J.L. Klay A.G. Knospe S. Kox 2 J. Kral P. Laloux 1 S. Lapointe P. La Rocca S. Lewis Q. Li F. Librizzi D. Madagodahettige Don I. Martashvili B. Mayes T. Milletto 1 V. Muccifora H. Muller J.F. Muraz 2 C. Nattrass F. Noto N. Novitzky G. Odyniec A. Orlandi A. Palmeri G.S. Pappalardo A. Pavlinov W. Pesci V. Petrov C. Petta P. Pichot 1 L. Pinsky M. Ploskon F. Pompei A. Pulvirenti J. Putschke C.A. Pruneau J. Rak J. Rasson K.F. Read J.S. Real 2 A.R. Reolon F. Riggi J. Riso F. Ronchetti C. Roy Daniel Roy 1 M. Salemi S. Salur M. Sharma D. Silvermyr N. Smirnov R. Soltz V. Sparti J.-S. Stutzmann 1 T.J.M. Symons A. Tarazona Martinez L. Tarini R. Thomen A. Timmins M. van Leeuwen R. Vieira A. Viticchié S. Voloshin D. Wang Y. Wang R.M. Ward
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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Submitted on : Friday, December 11, 2009 - 9:42:54 AM
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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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