Design and construction of the CMS Outer Tracker for the HL-LHC Upgrade

Dec 4, 2023, 5:40 PM
20m
Conference room (Wosk Centre)

Conference room

Wosk Centre

Oral Detector concepts Day 1 - Session 4

Speaker

Nicolas Maximilian Roewert (RWTH Aachen University (DE))

Description

The High Luminosity LHC (HL-LHC) is expected to deliver an integrated luminosity of $3000-4000\;$fb$^{-1}$ by the end of 2039 with peak instantaneous luminosity reaching to about $5-7.5\times10^{34}$cm$^{-2}$s$^{-1}$. During the Long Shutdown 3 period, several components of the CMS detector will undergo major changes, called Phase-2 upgrades, to be able to operate in the challenging environment of the HL-LHC. The current silicon outer tracker has to be replaced with a new one for operating in the HL-LHC period. The Phase-2 Outer Tracker (OT) will have high radiation tolerance, higher granularity and capability to handle higher data rates. Another key feature of the OT will be to provide tracking information to the Level-1 trigger, allowing trigger rates to be kept at a sustainable level without sacrificing physics potential. For this, the OT will be made out of modules which have two closely spaced sensors read-out by a common front-end ASIC, which can correlate hits in the two sensors creating short track segments called "stubs". The stubs will be used for tracking in the L1 trigger stage. In this contribution, the design of the CMS Phase-2 OT, the technological choices and first results with pre-production devices will be reported.

Submission declaration Original and unplublished

Primary author

Nicolas Maximilian Roewert (RWTH Aachen University (DE))

Co-author

Karl Ecklund (Rice University (US))

Presentation materials