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

1 SUBATECH - Laboratoire SUBATECH Nantes
2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

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.

Domaines: Physique des Hautes Energies - Expérience [hep-ex]; Instrumentations et Détecteurs [physics.ins-det]

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, 2010, 615, pp.6-13. ⟨10.1016/j.nima.2009.12.061⟩. ⟨in2p3-00440515⟩