Performance of prototypes for the ALICE electromagnetic calorimeter

Allen, J. S.; Awes, T. C.; Badalà, A.; Baumgart, Stephen; Bellwied, R.; Benhabib, L.; Bernard, C.; Bianchi, N.; Blanco, F.; Bortoli, Y.; Bourdaud, G.; Bourrion, O.; Boyer, B.; Bruna, E.; Butterworth, J.; Caines, H.; Calvo, D.; Capitani, G. P.; Carcagno, Y.; Díaz, A. Casanova; Cherney, M.; Balbastre, G. Conesa; Cormier, Thomas Michael; Cunqueiro, L.; Delagrange, H.; Franco, M.; Dialinas, M.; Nezza, P. Di; Donoghue, Alexander; Elnimr, M.; Enokizono, A.; Estienne, M.; Faivre, J.; Fantoni, A.; Fichera, F.; Foglio, B.; Fresneau, S.; Fujita, J.; Furget, C.; Gadrat, S.; Garishvili, I.; Germain, M.; Giudice, Nunzio; Gorbunov, Y. G.; Grimaldi, A.; Guardone, Nunzio; Guernane, R.; Hadjidakis, C.; Hamblen, J.; Harris, J. W.; Hasch, D.; Heinz, M.; Hille, P. T.; Hornback, D.; Ichou, R.; Jacobs, P.; Jangal, S.; Jayananda, K.; Klay, J. L.; Knospe, A. G.; Kox, S.; Král, J.; Laloux, P.; LaPointe, S.; Rocca, P. La; Lewis, Sharon L.; Li, Q.; Librizzi, F.; Don, D. M. M. D. Madagodagettige; Martashvili, I.; Mayes, B.; Milletto, T.; Muccifora, V.; Müller, H.; Muraz, J.F.; Nattrass, C.; Noto, F.; Novitzky, N.; Odyniec, G.; Orlandi, Alessio; Palmeri, A.; Pappalardo, G. S.; Pavlinov, A. I.; Pesci, W.; Petrov, V.; Petta, C.; Pichot, P.; Pinsky, L.; Płoskoń, M.; Pompei, F.; Pulvirenti, A.; Putschke, J.; Pruneau, C.; Rak, J.; Rasson, J.; Read, K. F.; Réal, J. S.; Reolon, A. R.; Riggi, F.; Riso, J.; Ronchetti, F.; Roy, C.; Roy, D.; Salemi, M.; Salur, S.; Sharma, Mukesh Kumar; Silvermyr, D.; Smirnov, N.; Soltz, R. A.; Sparti, V.; Stutzmann, J.-S.; Symons, T. J. M.; Martinez, A. Tarazona; Tarini, L. H.; Thomen, Robert P.; Timmins, A. R.; Leeuwen, M. van; Vieira, R.; Viticchié, A.; Voloshin, S. A.; Wang, D.; Wang, Y.; Ward, Rebecca

doi:10.1016/j.nima.2009.12.061

Cited by 23 publications

(22 citation statements)

References 6 publications

(6 reference statements)

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“…The EMCal [40,41] is a lead/scintillator sampling calorimeter covering |η| < 0.7 in pseudorapidity and 100…”

Section: Methodsmentioning

confidence: 99%

Measurement of transverse energy at midrapidity in Pb-Pb collisions atsNN=2.76TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2016

Phys. Rev. C

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We report the transverse energy (E T ) measured with ALICE at midrapidity in Pb-Pb collisions at √ s NN = 2.76 TeV as a function of centrality. The transverse energy was measured using identified single-particle tracks. The measurement was cross checked using the electromagnetic calorimeters and the transverse momentum distributions of identified particles previously reported by ALICE. The results are compared to theoretical models as well as to results from other experiments. The mean E T per unit pseudorapidity (η), dE T /dη , in 0%-5% central collisions is 1737 ± 6(stat.) ± 97(sys.) GeV. We find a similar centrality dependence of the shape of dE T /dη as a function of the number of participating nucleons to that seen at lower energies. The growth in dE T /dη at the LHC energies exceeds extrapolations of low-energy data. We observe a nearly linear scaling of dE T /dη with the number of quark participants. With the canonical assumption of a 1 fm/c formation time, we estimate that the energy density in 0%-5% central Pb-Pb collisions at √ s NN = 2.76 TeV is 12.3 ± 1.0 GeV/fm 3 and that the energy density at the most central 80 fm 2 of the collision is at least 21.5 ± 1.7 GeV/fm 3 . This is roughly 2.3 times that observed in 0%-5% central Au-Au collisions at √ s NN = 200 GeV.

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“…The EMCal [40,41] is a lead/scintillator sampling calorimeter covering |η| < 0.7 in pseudorapidity and 100…”

Section: Methodsmentioning

confidence: 99%

Measurement of transverse energy at midrapidity in Pb-Pb collisions atsNN=2.76TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2016

Phys. Rev. C

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“…Each 2 × 2 group of neighboring EMCal towers forms a trigger elementary patch. The energy resolution was measured to be 1.7 ⨁ 11.1= ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi EðGeVÞ p ⨁ 5.1=EðGeVÞ% [46], where ⨁ indicates a sum in quadrature.…”

Section: Experimental Setup and Data Setmentioning

confidence: 99%

Measurement of electrons from semileptonic heavy-flavor hadron decays inppcollisions ats=2.76 TeV

Abelev¹,

Adam²,

Adamová³

et al. 2015

Phys. Rev. D

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The p T -differential production cross section of electrons from semileptonic decays of heavy-flavor hadrons has been measured at midrapidity in proton-proton collisions at ffiffi ffi s p ¼ 2.76 TeV in the transverse momentum range 0.5 < p T < 12 GeV=c with the ALICE detector at the LHC. The analysis was performed using minimum bias events and events triggered by the electromagnetic calorimeter. Predictions from perturbative QCD calculations agree with the data within the theoretical and experimental uncertainties.

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“…The readout of the front end electronics used the standard ALICE data aquisition system. The final results are fully described in details in [8], showing an average light yield of (4.3±0.3) photoelectrons/MeV, a uniformity of the response within 1% for all towers and configurations; a good linearity of the response to electrons above 20 GeV, an only slightly deteriorated energy resolution when using the EMCAL default shaping time of 200 ns compared to 2 μs for PHOS, a position resolution described by 1.5 mm + 5.3 mm / √E (GeV) and a hadron rejection factor > 600 for an electron identification efficiency of 90%. The energy resolution of σ(E) / E = (1.7 ± 0.3) + (11.1 ± 0.4) / √ + (5.1 ± 0.3) / E (where E is in GeV) is shown in Fig.3 (left panel), together with the x and y position resolution as a function of the energy deposit for electrons (right panel).…”

Section: Results From Test Beamsmentioning

confidence: 99%

The ALICE Electromagnetic Calorimeter: EMCAL

Fantoni¹

2011

J. Phys.: Conf. Ser.

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Performance of prototypes for the ALICE electromagnetic calorimeter

Cited by 23 publications

References 6 publications

Measurement of transverse energy at midrapidity in Pb-Pb collisions atsNN=2.76TeV

Measurement of transverse energy at midrapidity in Pb-Pb collisions atsNN=2.76TeV

Measurement of electrons from semileptonic heavy-flavor hadron decays inppcollisions ats=2.76 TeV

The ALICE Electromagnetic Calorimeter: EMCAL

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