The time reconstruction performance of the ATLAS electromagnetic calorimeter readout is studied. The contribution of the electronics to the time resolution is estimated to be about 20 ps, thus demonstrating the possibility of achieving a small constant term in the time resolution for particles. The resolution to electromagnetic showers produced by an electron beam is also measured. After correction for the effects due to the calorimeter geometry, a 100 ps constant term is found for a typical cell.
Time resolution of the ATLAS barrel liquid argon electromagnetic calorimeter / M. Aharrouchea, J. Colas, L. Di Ciaccio, M. El Kacimia, O. Gaumera, M. Gouanère, D. Goujdami, R. Lafaye, S. Laplace, P. Perrodo, D. Prieur, H. Przysiezniak, G. Sauvage, F. Tarrade, I. Wingerter-Seez, R. Zitoun, F. Lanni, H. Ma, S. Rajagopalan, S. Rescia, H. Takai, A. Belymam, D. Benchekroun, M. Hakimi, A. Hoummada, R. Stroynowski, P. Zarzhitsky, J. Ye, M. Aleksae, J. Beck Hansen, T. Carli, P. Fassnacht, F. Gianotti, L. Hervas, W. Lampl, G. Unal, J. Collot, J.Y. Hostachy, F. Ledroit-Guillon, P. Martin, F. Malek, S. Viret, J. Ban, M. Leltchouk, J.A. Parsons, W. Sippach, D. Banfi, L. Carminati, D. Cavalli, G. Costa, M. Delmastro,M. Fanti, L. Mandelli, M. Mazzanti, G.F. Tartarelli, C. Bourdarios, L. Fayard, D. Fournier, G. Graziani, L. Iconomidou-Fayard, M. Kado, D. Lelas, M. Plamondon, L. Poggioli, P. Puzo, D. Rousseau, R. Sacco, L. Serin, S. Simion, D. Zerwas, A. Camard, D. Lacour, B. Laforge, I. Nikolic-Audit, Ph. Schwemling, W. Cleland, H. Ghazlane, R. Cherkaoui El Moursli, A. Idrissi Fakhr-Eddine, M. Boonekamp, N. Kerschen, B. Mansoulié, J.P. Meyer, J. Schwindling, B. Lund-Jensen. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 597:2-3(2008 Dec), pp. 178-188. [10.1016/j.nima.2008.08.142]
Time resolution of the ATLAS barrel liquid argon electromagnetic calorimeter
D. Banfi;L. Carminati;M. Fanti;L. Mandelli;
2008
Abstract
The time reconstruction performance of the ATLAS electromagnetic calorimeter readout is studied. The contribution of the electronics to the time resolution is estimated to be about 20 ps, thus demonstrating the possibility of achieving a small constant term in the time resolution for particles. The resolution to electromagnetic showers produced by an electron beam is also measured. After correction for the effects due to the calorimeter geometry, a 100 ps constant term is found for a typical cell.
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