By Mehar Ali Shah - The installation of a new prototype of CMS muon chambers was completed last December. With these installations, the CMS detector is taking further steps towards the HL-LHC era at CERN, CMS News.
Improved resistive plate chambers demonstrator - A step towards HL-LHC
Improved resistive plate chambers demonstrator - A step towards HL-LHC
Improved resistive plate chambers demonstrator - A step towards HL-LHC

RPC team showing a demonstrator chamber before installation (Image: CERN)