CERN Accelerating science

ATLAS Note
Report number	ATL-DAQ-CONF-2007-003 ; ATL-COM-DAQ-2006-033
Title	The ATLAS Barrel Level-1 Muon Trigger Processor Performances
Author(s)	Bocci, V ; Chiodi, G ; Ciapetti, G ; De Pedis, D ; Di Girolamo, A ; Di Mattia, A ; Gennari, E ; Luci, C ; Nisati, A ; Pasqualucci, E ; Pastore, F ; Petrolo, E ; Spila, F ; Vari,, R ; Veneziano, S ; Zanelli, L ; Aielli, G ; Cardarelli, R ; Di Ciaccio, A ; Di Simone, A ; Di Stante, L ; Salamon, A ; Santonico, R ; Aloisio, A ; Alviggi, M G ; Canale, V ; Carlino, G ; Conventi, F ; De Asmundis, R ; Della Pietra, M ; Delle Volpe, D ; Iengo, P ; Izzo, V ; Migliaccio, A (University of Napoli, Frederico II, and INFN Napoli) ; Patricelli, S ; Sekhniaidze, G ; Brambilla, Elena ; Cataldi, G ; Gorini, E ; Grancagnolo, F ; Perrino, R ; Primavera, M ; Spagnolo, S ; Aprodo, V ; Bartos, D ; Buda, S ; Constantin, S ; Dogaru, M ; Magureanu, C ; Pectu, M ; Prodan, L ; Rusu, A ; Uroseviteanu, C
Publication	2005
Imprint	12 Jan 2005
Number of pages	5
In:	9th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, Como, Italy, 17 - 21 Oct 2005
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	RPC trigger lvl1 performance muon
Abstract	The ATLAS level-1 muon trigger will select events with high transverse momentum and tag them to the correct machine bunch-crossing number with high efficiency. Three stations of dedicated fast detectors provide a coarse pT measurement, with tracking capability on bending and non-bending pro jections. In the Barrel region, hits from doublets of Resistive Plate Chambers are processed by custom ASIC, the Coincidence Matrices, which performs almost all the functionalities required by the trigger algorithm and the readout. In this paper we present the performance of the level-1 trigger system studied on a cosmic test stand at CERN, concerning studies on expected trigger rates and efficiencies.
Copyright/License	Preprint: (License: CC-BY-4.0)

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