CERN Accelerating science

Article
Title	Operational experience of the gas gain monitoring system of the CMS RPC muon detectors
Author(s)	Colafranceschi, S (Frascati) ; Benussi, L (Frascati) ; Bianco, S (Frascati) ; Fabbri, L (Frascati) ; Giardoni, M (Frascati) ; Ortenzi, B (Frascati) ; Paolozzi, A (Rome U.) ; Passamonti, L (Frascati) ; Piccolo, D (Frascati) ; Pierluigi, D (Frascati) ; Ponzio, B (Frascati) ; Russo, A (Frascati) ; Colaleo, A (INFN, Bari) ; Loddo, F (INFN, Bari) ; Maggi, M (INFN, Bari) ; Ranieri, A (INFN, Bari) ; Abbrescia, M (INFN, Bari) ; Iaselli, G (INFN, Bari) ; Marangelli, B (INFN, Bari) ; Natali, S (INFN, Bari) ; Nuzzo, S (INFN, Bari) ; Pugliese, G (INFN, Bari) ; Romano, F (INFN, Bari) ; Roselli, G (INFN, Bari) ; Trentadue, R (INFN, Bari) ; Tupputi, S (INFN, Bari) ; Guida, R (Bari U.) ; Polese, G (Lappeenranta U. Tech.) ; Sharma, A (CERN) ; Cimmino, A (INFN, Naples) ; Lomidze, D (Naples U.) ; Paolucci, D (Naples U.) ; Baesso, P (INFN, Pavia ; Pavia U.) ; Necchi, M (INFN, Pavia ; Pavia U.) ; Pagano, D (INFN, Pavia ; Pavia U.) ; Ratti, S P (INFN, Pavia ; Pavia U.) ; Vitulo, P (INFN, Pavia ; Pavia U.) ; Viviani, C (INFN, Pavia ; Pavia U.)
Publication	2010
Number of pages	2
In:	Nucl. Instrum. Methods Phys. Res., A 617 (2010) 146-147
In:	11th Pisa Meeting on Advanced Detectors on Frontier Detectors For Frontier Physics, La Biodola, Italy, 24 - 30 May 2009, pp.146-147
DOI	10.1016/j.nima.2009.06.095
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	Performances of the Gas Gain Monitoring system of the CMS RPC muon detectors after one year of operation at the scaled down closed loop recirculation gas system are presented. The GGM is made of 12 single-gap RPC's arranged in a cosmic ray telescope, with charge readout for online monitoring of working point. Preliminary results on sensitivity to gas changes and to environmental variables will be reported on.

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