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Ahn, S.; Arnaldi, R.; Baek, Y.; Baldit, A.; Barret, V.; Bastid, N.; Batigne, G.; Béney, J.L.; Berny, R.; Bianchi, L.; Blanc, A.; Blanchard, G.; Bossù, F.; Chiavassa, E.; Cortese, P.; Crochet, P.; Dellacasa, G.; De Marco, N.; Dupieux, P.; Ferretti, A.; Gagliardi, M.; Gallio, M.; Insa, C.; Jouve, F.; Lopez, X.; Luparello, G.; Manceau, L.; Manso, F.; Mereu, P.; Musso, A.; Oppedisano, C.; Picotti, A.; Renard, C.; Rosnet, P.; Roy, D.; Royer, L.; Saturnini, P.; Scomparin, E.; Stocco, D.; Vercellin, E.; Vulpescu, B.; Zhang, X.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 01/2012, Letnik: 661Journal Article
ALICE (a large ion collider experiment) is the LHC experiment dedicated to the study of ultra-relativistic heavy ion collisions. The ALICE muon spectrometer covers a large range in pseudo-rapidity and is designed to study quarkonia and heavy flavours decaying into (di-)muons. The high particle multiplicities environment in such collisions require a specific, fast and efficient trigger system, the muon trigger. It consists of four planes of RPC detectors, covering an area of 36 m 2 each, 21k front-end channels and a fast-decision electronics. The muon trigger is designed to reconstruct (muon) tracks and deliver a trigger signal each 25 ns (40 MHz) with a total latency of 800 ns. The hit position on the RPC is measured in two orthogonal directions with an accuracy of about 1 cm. The performance measured with the first p–p collisions at ( s ) = 900 GeV carried out in December 2009 is reported.
