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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Instrumentation III

HK 16.4: Talk

Tuesday, March 12, 2024, 16:45–17:00, HBR 19: C 1

Characterizing the analog signal behavior of APTS chips for ALICE ITS3 Upgrade at the LHC — •Alexander Musta for the ALICE Germany collaboration — Technische Universität München, Munich, Germany

This presentation will discuss the Analog Pixel Testing Structure (APTS) used to test different pixel designs for the upcoming new Inner Tracking System (ITS3) for the ALICE experiment. The underlying motivation for testing these pixel technologies is to find the most suitable silicon detector that minimizes charge sharing, power consumption, and data output. For the ITS3, Monolithic Active Pixel Sensor (MAPS) detectors are envisioned. Different doping structures and pixel sizes are currently under investigation. In this presentation, the most promising doping layout for different pixel sizes called the modified process with a gap, has been investigated. Properties such as capacitance, charge collection efficiency (CCE), mean cluster sizes, and the behavior under different bias voltages for these chips have been studied.

Keywords: Monolithic Active Pixel Sensor (MAPS); Silicon Detector; ITS 3; ALICE