Time resolution of the ATLAS barrel liquid argon electromagnetic calorimeter

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...

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Veröffentlicht in:	Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2008, Vol.597 (2), p.178-188
Hauptverfasser:	Aharrouche, M., Colas, J., Di Ciaccio, L., El Kacimi, M., Gaumer, O., Gouanère, M., Goujdami, D., Lafaye, R., Laplace, S., Perrodo, P., Prieur, D., Przysiezniak, H., Sauvage, G., Tarrade, F., Wingerter-Seez, I., Zitoun, R., Lanni, F., Ma, H., Rajagopalan, S., Rescia, S., Takai, H., Belymam, A., Benchekroun, D., Hakimi, M., Hoummada, A., Stroynowski, R., Zarzhitsky, P., Ye, J., Aleksa, M., Beck Hansen, J., Carli, T., Fassnacht, P., Gianotti, F., Hervas, L., Lampl, W., Unal, G., Collot, J., Hostachy, J.Y., Ledroit-Guillon, F., Martin, P., Malek, F., Viret, S., Ban, J., Leltchouk, M., Parsons, J.A., Sippach, W., Banfi, D., Carminati, L., Cavalli, D., Costa, G., Delmastro, M., Fanti, M., Mandelli, L., Mazzanti, M., Tartarelli, G.F., Bourdarios, C., Fayard, L., Fournier, D., Graziani, G., Iconomidou-Fayard, L., Kado, M., Lelas, D., Plamondon, M., Poggioli, L., Puzo, P., Rousseau, D., Sacco, R., Serin, L., Simion, S., Zerwas, D., Camard, A., Lacour, D., Laforge, B., Nikolic-Audit, I., Schwemling, Ph, Cleland, W., Ghazlane, H., Cherkaoui El Moursli, R., Idrissi Fakhr-Eddine, A., Boonekamp, M., Kerschen, N., Mansoulié, B., Meyer, J.P., Schwindling, J., Lund-Jensen, B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Calorimetry particle physics Electromagnetic Instrumentation and Detectors LHC Physics Timing
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Beschreibung
Zusammenfassung:	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.
ISSN:	0168-9002 1872-9576 1872-9576
DOI:	10.1016/j.nima.2008.08.142