Institut de recherche sur les lois fondamentales de l'Univers

In this seminar I will first review the physics case for a hermetic timing detector for charge particles to be installed in CMS in the years 2024-25 in preparation of the High Luminosity upgrade of the LHC accelerator (HL-LHC). Then I will present the possible technologies currently under studies for the timing detector, specifically I will concentrate on explaining the basics principles of Ultra-fast Silicon Detectors and their performances.

I will conclude with a brief outline of the future research and development steps for the construction of the timing detector.