Performance of prototypes for the ALICE electromagnetic calorimeter

• DOI: 10.1016/j.nima.2009.12.061
• Publication Date: 2010-01-05T09:08:59Z
• Authors: J. Allen; T. Awes; A. Badalá; S. Baumgart; R. Bellwied; L. Benhabib; C. Bernard; N. Bianchi; F. Blanco; Y. Bortoli; G. Bourdaud; O. Bourrion; B. Boyer; E. Bruna; J. Butterworth; H. Caines; D. Calvo Diaz Ald...; G.P. Capitani; Y. Carcagno; A. Casanova Diaz; M. Cherney; G. Conesa Balbastre; T.M. Cormier; L. Cunqueiro Mendez; H. Delagrange; M. Del Franco; M. Dialinas; P. Di Nezza; A. Donoghue; M. Elnimr; A. Enokizono; M. Estienne; J. Faivre; A. Fantoni; F. Fichera; B. Foglio; S. Fresneau; J. Fujita; C. Furget; S. Gadrat; I. Garishvili; M. Germain; N. Giudice; Y. Gorbunov; A. Grimaldi; N. Guardone; R. Guernane; C. Hadjidakis; J. Hamblen; J.W. Harris; D. Hasch; M. Heinz; P.T. Hille; D. Hornback; R. Ichou; P. Jacobs; S. Jangal; K. Jayananda; J.L. Klay; A.G. Knospe; S. Kox; J. Kral; P. Laloux; S. LaPointe; P. La Rocca; S. Lewis; Q. Li; F. Librizzi; D. Madagodahettig...; I. Martashvili; B. Mayes; T. Milletto; V. Muccifora; H. Muller; J.F. Muraz; 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; L. Pinsky; M. Ploskon; F. Pompei; A. Pulvirenti; J. Putschke; C.A. Pruneau; J. Rak; J. Rasson; K.F. Read; J.S. Real; A.R. Reolon; F. Riggi; J. Riso; F. Ronchetti; C. Roy; D. Roy; M. Salemi; S. Salur; M. Sharma; D. Silvermyr; N. Smirnov; R. Soltz; V. Sparti; J.-S. Stutzmann; 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
• Keywords: Calorimeter (particle physics); Linearity

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.<br/>10 pages, 10 figures<br/>