The CMS pixel detector for the High Luminosity LHC

Abstract

Abstract The LHC machine will be upgraded to increase its peak luminosity to 5–7.5 × 1034 cm−2 s−1 and to possibly reach an integrated luminosity of 3000–4000 fb−1, with an average number of pileup events of 140–200. The CMS experiment needs to be upgraded to keep up with the new challenges: the unprecedented radiation environment translates to the detector requirement of high resilience, while the increased number of events per bunch crossing requires higher detector granularity. Thus a completely new Inner Tracker will be installed. Design choices for the Inner Tracker Phase-2 upgrade, highlighting R&D activities and technological approaches, will be presented.