Speaker
Description
The High-Luminosity LHC (HL-LHC) will operate with up to 200 simultaneous proton–proton interactions per bunch crossing, requiring upgraded detector readout, triggering, and data acquisition systems. The Phase-2 CMS Outer Tracker introduces new detector modules and a trigger architecture designed to contribute to online trigger decisions within 12.5 $\mu$s. Demonstrating the performance and operational behaviour of this system prior to HL-LHC data taking is an important step toward operational readiness.
A CMS Tracker Phase-2 Cosmic Rack setup has been assembled, consisting of a vertical array of Outer Tracker ladders, each instrumented with twelve Outer Tracker modules. The system is integrated using a readout and processing architecture based on ATCA electronics and prerequisite firmware and software. The rack is operated with cosmic-ray muons, with the ability for self-triggering in addition to the provision of an independent trigger based on scintillator tiles instrumented with photomultiplier tubes.
The primary goals of this system are to exercise the integration of a full trigger and DAQ chain and to develop and validate commissioning procedures for CMS operation at the HL-LHC. The setup also provides a platform for detector backend system development, studying detector synchronisation, online control and offline reconstruction. The status and performance of these components within the integrated system will be presented.