A new generation of gaseous detectors for the CMS experiment

Dr. Ilaria Vai, CERN & University of Bergamo, Italy

The future of gaseous detectors technology relies on Micropattern Gaseous Detectors (MPGDs): they can reach extreme rate capabilities, space resolutions and are resistant to radiations, fundamental characteristics for nowadays high energy physics experiments. Gas Electron Multipliers in particular have gone through a 20-year-long R&D phase that led them to become a mature technology, ready for operation in large experiments.

In this seminar I will focus on the R&D that the CMS collaboration has been doing on Triple-GEM detectors: we will look at the rationale behind the choice of this technology for the upgrade of the muon system. I will then describe the performance achieved in test beams and in laboratory qualification. Finally, I will outline how the Triple-GEM detectors were installed in the experiment and focus on the results obtained during commissioning and in the early stages of data taking with cosmic rays and beam.

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