Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 33: Silicon Detectors IV

T 33.4: Talk

Tuesday, March 17, 2026, 17:00–17:15, KH 01.022

Integration Test with 2S Modules for the CMS Phase-2 Outer Tracker Upgrade — Max Beckers², Lutz Feld¹, Nina Höflich², Katja Klein¹, Martin Lipinski¹, •Vanessa Oppenländer¹, and Oliver Pooth² — ¹1. Physikalisches Institut B, RWTH Aachen — ²3. Physikalisches Institut B, RWTH Aachen

The new operating conditions of the future HL-LHC require a replacement of the complete silicon tracking system of the CMS experiment as part of the CMS Phase-2 Upgrade. For the Phase-2 Outer Tracker new silicon strip modules, so-called 2S modules, have been developed that consist of two silicon sensors stacked on top of each other. By correlating the measured hits of both sensors, this module design enables the inclusion of tracking information in the Level-1 trigger at CMS for the first time. For the new Phase-2 tracker the endcap region is known as the Tracker Endcap Double-Disks (TEDD) and is composed of five double-disks on each detector side that feature PS modules at smaller radii as well as 2S modules at larger radii. Each disk will be composed of two half disks that are called dee. After the careful assembly of the modules they are integrated onto the dees, which serve as the cooling and support structure for the modules. In this talk measurements and results from a dee integration test at DESY with 8 of the first pre-production 2S Modules built at RWTH Aachen will be shown.

Keywords: Silicon; CMS; Module