  The muon spectrometer of the CMS (Compact Muon Solenoid) experiment at the
Large Hadron Collider (LHC) is equipped with a redundant system made of
Resistive Plate Chambers (RPCs) and Drift Tube (DT) chambers in the barrel, RPC
and Cathode Strip Chambers (CSCs) in the endcap region. In this paper, the
first results of the performance of the RPC system during 2015 with the LHC
running at 13 TeV is presented. The stability of the RPC performance, in terms
of efficiency, cluster size and noise, is reported.

Instrumentation and Detectors;High Energy Physics - Experiment