Speakers
Description
The CMS Inner Tracker (IT) is a key component of the Phase-2 upgrade of the CMS detector, designed to operate under the extreme radiation conditions of the High-Luminosity LHC, while maintaining and extending current tracking performance. The new system, featuring increased granularity, enhanced radiation tolerance, extended geometrical coverage, and higher readout rates capability, will replace the existing pixel detector, ensuring precise vertex reconstruction in the dense HL-LHC environment. This contribution presents an overview of the Inner Tracker, including its layout, detector concept, and key technological advancements. The stringent requirements imposed by the HL-LHC have driven developments in silicon sensor technologies, front-end electronics, cooling systems, low-material-budget mechanics, and powering schemes; the adopted solutions are presented, with emphasis on the overall design strategy. The current status of the project is discussed, with a focus on ongoing production of pixel modules, including assembly procedures and quality assurance protocols, supported by results from extensive testing campaigns. Progress in large-scale integration and detector construction is also discussed, addressing the challenges of assembling modules with lightweight mechanical structures while integrating cooling and powering. The contribution aims to provide a global overview of the system, assessing the readiness of the detector for installation and commissioning at the HL-LHC.