The CMS Outer Tracker for the High Luminosity LHC upgrade
Alessandro La Rosa (on behalf of CMS Tracker Collaboration)

TL;DR
The paper discusses the design and technological choices for the upgraded CMS Outer Tracker system, essential for handling the high luminosity and pileup conditions of the HL-LHC, enabling effective tracking and triggering.
Contribution
It introduces the new layout and technological innovations of the CMS Outer Tracker for the HL-LHC upgrade, highlighting module assembly and quality assurance methods.
Findings
New tracker layout designed for high luminosity conditions
Technological choices optimize robustness and performance
Assembly and quality assurance processes ensure reliability
Abstract
The High Luminosity Large Hadron Collider (HL-LHC) at CERN is expected to collide protons at a centre-of-mass energy of 14\,TeV and to reach the unprecedented peak instantaneous luminosity of 5\,\,7.5\,x\,\,cms with an average number of pileup events of 140\,\,200. This will allow the ATLAS and CMS experiments to collect integrated luminosities up to 3000\,\,4000\,fb during the project lifetime. To cope with this extreme scenario the CMS detector will be substantially upgraded before starting the HL-LHC, with a plan known as CMS Phase-2 upgrade. The CMS Tracker detector will have to be replaced in order to fully exploit the delivered luminosity and cope with the demanding operating conditions. The new detector will provide robust tracking as well as input for the first level trigger. This paper is focused on the replacement of the CMS Outer Tracker…
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