Performance Study of the CMS Barrel Resistive Plate Chambers with Cosmic Rays

TL;DR

This paper reports on the performance of the CMS barrel Resistive Plate Chambers during cosmic ray data taking, highlighting high operational efficiency and detection performance in a large-scale experimental setup.

Contribution

It provides the first comprehensive performance analysis of the CMS RPC system during cosmic ray runs, demonstrating operational stability and efficiency.

Findings

Over 98% of channels operational

Detection efficiency of about 90%

Successful operation in full barrel configuration

Abstract

In October and November 2008, the CMS collaboration conducted a programme of cosmic ray data taking, which has recorded about 270 million events. The Resistive Plate Chamber system, which is part of the CMS muon detection system, was successfully operated in the full barrel. More than 98% of the channels were operational during the exercise with typical detection efficiency of 90%. In this paper, the performance of the detector during these dedicated runs is reported.