Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 90: Silicon Detectors VII (ATLAS + CMS phase-2)

T 90.3: Vortrag

Freitag, 4. April 2025, 09:30–09:45, VG 0.111

Assembly and test procedures of silicon detector modules for the Phase-2 Upgrade of the CMS Outer Tracker and the current status of production — •Stefan Maier, Tobias Barvich, Bernd Berger, Alexander Dierlamm, Ulrich Husemann, Markus Klute, Kai Kraemer, Waldemar Rehm, Hans Jürgen Simonis, and Lea Stockmeier — Institute of Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT)

In preparation for the High Luminosity LHC, the entire tracker of the CMS experiment will be exchanged within the Phase-2 Upgrade until 2029. The new outer tracker will be made of approximately 13000 silicon sensor modules which come in two types: 2S modules (consisting of two parallel silicon strip sensors) and PS modules (one pixel and one strip sensor combined in a module). With these modules the tracker provides tracking information to the Level-1 trigger. By correlating the hit information of both sensor layers in the magnetic field of CMS and, thus, allowing to suppress charged particles with low transverse momentum (<2GeV/c), the corresponding hit data can be read out every 25 ns. To guarantee successful operation of the CMS detector at the HL-LHC, the production of the outer tracker modules has to fulfil strict requirements. The production is distributed among several institutes all around the world to achieve the required module assembly rates. The talk will shortly explain the assembly and test procedures of 2S modules at KIT and summarize the status of the production which started recently.

Keywords: silicon; module; assembly; testing; production