Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Instrumentation XIII

HK 58.4: Vortrag

Donnerstag, 13. März 2025, 18:30–18:45, SR Exp1A Chemie

Commissioning of a telescope with babyMOSS reference layers for the testing of MAPS chips for ALICE — •Georgios Mantzaridis for the ALICE Germany collaboration — Technische Universität München, München, Germany

Monolithic Active Pixel Sensors (MAPS) provide the basis for the next generation of tracking and vertex detectors for the ALICE experiment at CERN. Both the next upgrade of the inner tracking system, ITS3, and the upcoming Outer Tracker for the planned ALICE3 detector will employ this technology. For that, the ALICE Collaboration is developing new sensor prototypes for which an extensive R&D program is conducted to assess the performance and operating parameters. For this purpose, we constructed a testbeam telescope at TUM. It uses six babyMOSS chips as reference planes in addition to the device under test (DUT). This contribution presents the commissioning of the telescope using the 3.2 GeV/c electron beam of the ELSA facility in Bonn. An analogue prototype test structure (APTS) is used as the DUT of which the spatial resolution and efficiency have been measured. This testbeam serves also as a preparation for testing larger pitch APTS, which are prototype sensors for the ALICE3 Outer Tracker and will be available next summer.

This research was supported by the Excellence Cluster ORIGINS funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy EXC-2094-390783311 and the DFG through the Grant SFB 1258 "Neutrinos and Dark Matter in Astro and Particle Physics".