Aging studies of Triple-GEM detectors for future upgrades of the CMS endcap muon system at the HL-LHC

Concurrently with the high-luminosity LHC (HL-LHC) upgrade, the Compact Muon Solenoid (CMS) experiment is renovating some of its subsystems. In particular, in the muon spectrometer region, Triple-GEM detectors will be installed to cope with the high-rate environment and to maintain the actual performance of the detector. In this work we summarize the aging tests performed to validate the Triple-GEM technology for the CMS purpose. Furthermore the tests and results completed to amplify the knowledge of the aging issue in Triple-GEMs and gaseous detectors in general are presented, with some hint for future test to perform.