The BaBar experiment uses a big system based on RPC detectors to discriminate muons from pions and to identify neutral hadrons. About 2000 m(2) of RPC chambers have been working at SLAC since the end of 1998. We report on the performances of the RPC chambers focusing on new problems discovered in the RPC behaviour. These problems started very soon after the installation of the chambers on the detector when the high-ambient temperature triggered an increase of dark currents inside the chambers and a reduction of the efficiency. Careful analysis of the BaBar data and dedicated R&D efforts in the laboratory have helped to identify the main source of the trouble in the linseed oil varnish on the bakelite electrodes. (C) 2003 Elsevier B.V. All rights reserved.

Performances of RPCs in the BaBar experiment

CARPINELLI, MASSIMO;FORTI, FRANCESCO;NERI, NICOLA;PAOLONI, EUGENIO;
2003-01-01

Abstract

The BaBar experiment uses a big system based on RPC detectors to discriminate muons from pions and to identify neutral hadrons. About 2000 m(2) of RPC chambers have been working at SLAC since the end of 1998. We report on the performances of the RPC chambers focusing on new problems discovered in the RPC behaviour. These problems started very soon after the installation of the chambers on the detector when the high-ambient temperature triggered an increase of dark currents inside the chambers and a reduction of the efficiency. Careful analysis of the BaBar data and dedicated R&D efforts in the laboratory have helped to identify the main source of the trouble in the linseed oil varnish on the bakelite electrodes. (C) 2003 Elsevier B.V. All rights reserved.
2003
Anulli, F; Baldini, R; Band, H; Bionta, R; Brau, J; Brigljevic, V; Buzzo, A; Calcaterra, A; Carpinelli, Massimo; Cartaro, T; Cavallo, N; Crosetti, G; De Nardo, G; De Sangro, R; Eichenbaum, A; Falciai, D; Fabozzi, F; Ferroni, F; Finocchiaro, G; Forti, Francesco; Frey, R; Johnson, J; Gatto, C; Grauges Pous, E; Iwasaki, M; Lange, D; Lista, L; Lo Vetere, M; Lu, C; Neal, H; Neri, Nicola; Macri, M; Messener, B; Monge, Mr; Moore, T; Morganti, S; Palano, A; Paoloni, Eugenio; Paolucci, P; Passaggio, S; Pastore, F; Patrignani, C; Patteri, P; Peruzzi, I; Piccolo, D; Piccolo, M; Piredda, G; Pompili, A; Robutti, E; Roodman, A; Santroni, A; Sciacca, C; Sinev, N; Soha, A; Storm, D; Tosi, S; Va'Vra, J; Xie, Y; Wright, D; Wisniewski, W; RI Patrignani Claudia/C 5223 2009 Lista Luca/C 5719 2008 Forti Francesco/H 3035 2011 Neri Nicola/G 3991 2012 Monge Maria Roberta/G 9127, 2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/81602
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