Study of gas purifiers for the CMS RPC detector
L. Benussi (1), S. Bianco (1), S.Colafranceschi (1, 2 and3), F.L., Fabbri (1), F. Felli (1, 2), M. Ferrini (1, 2), M. Giardoni (1), T., Greci (1, 2), A. Paolozzi (1, 2), L. Passamonti (1), D. Piccolo (1), D., Pierluigi (1), A. Russo (1), G. Saviano (1, 2), S. Buontempo (4), A.
TL;DR
This study systematically investigates the effectiveness and chemistry of gas purifiers used in the CMS RPC muon detector's closed loop system over 400 days, focusing on pollutant presence, purifier performance, and regeneration.
Contribution
It provides a detailed analysis of purifier contaminants, chemistry, and regeneration procedures, enhancing understanding of gas recirculation system maintenance in high-energy physics detectors.
Findings
Identification of pollutants released by purifiers
Characterization of purifier chemistry and performance
Insights into purifier regeneration procedures
Abstract
The CMS RPC muon detector utilizes a gas recirculation system called closed loop (CL) to cope with large gas mixture volumes and costs. A systematic study of CL gas purifiers has been carried out over 400 days between July 2008 and August 2009 at CERN in a low-radiation test area, with the use of RPC chambers with currents monitoring, and gas analysis sampling points. The study aimed to fully clarify the presence of pollutants, the chemistry of purifiers used in the CL, and the regeneration procedure. Preliminary results on contaminants release and purifier characterization are reported.
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