The CMS RPC gas gain monitoring system: an overview and preliminary   results

L. Benussi (1); S. Bianco (1); S. Colafranceschi (1,2,3); D. Colonna; (1); L. Daniello (1); F. L. Fabbri (1); M. Giardoni (1); B. Ortenzi (1); A.; Paolozzi (1,2); L. Passamonti (1); D. Pierluigi (1); B. Ponzio (1); C. Pucci; (1); A. Russo (1); G. Roselli (5); A. Colaleo (4); F. Loddo (4); M. Maggi; (4); A. Ranieri (4); M. Abbrescia (4,5); G. Iaselli (4,5); B. Marangelli; (4,5); S. Natali (4,5); S. Nuzzo (4,5); G. Pugliese (4,5); F. Romano (4,5),; R. Trentadue (4,5); S. Tupputi (4,5); R. Guida (3); G. Polese (3,6); N.; Cavallo (7); A. Cimmino (7,8); D. Lomidze (8); P. Noli (7,8); D. Paolucci; (8); P. Piccolo (8); C. Sciacca (7,8); P. Baesso (9); M. Necchi (9); D.; Pagano (9); S. P. Ratti (9); P. Vitulo (9); C. Viviani (9)

arXiv:0812.1108·physics.ins-det·May 12, 2010

The CMS RPC gas gain monitoring system: an overview and preliminary results

L. Benussi (1), S. Bianco (1), S. Colafranceschi (1,2,3), D. Colonna, (1), L. Daniello (1), F. L. Fabbri (1), M. Giardoni (1), B. Ortenzi (1), A., Paolozzi (1,2), L. Passamonti (1), D. Pierluigi (1), B. Ponzio (1), C. Pucci, (1), A. Russo (1), G. Roselli (5), A. Colaleo (4)

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TL;DR

The paper presents the development and initial results of the CMS RPC Gas Gain Monitoring system, a cosmic ray telescope that continuously tracks RPC detector performance to ensure optimal operation in the CMS experiment.

Contribution

It introduces a novel gas gain monitoring system for CMS RPC detectors, detailing its construction and initial commissioning results.

Findings

01

GGM system successfully monitors RPC gain and efficiency in real-time.

02

First commissioning results demonstrate system effectiveness.

03

Provides a fast method for detecting shifts in detector working conditions.

Abstract

The status of the CMS RPC Gas Gain Monitoring (GGM) system developed at the Frascati Laboratory of INFN (Istituto Nazionale di Fisica Nucleare) is reported on. The GGM system is a cosmic ray telescope based on small RPC detectors operated with the same gas mixture used by the CMS RPC system. The GGM gain and efficiency are continuously monitored on-line, thus providing a fast and accurate determination of any shift in working point conditions. The construction details and the first result of GGM commissioning are described.

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