PID with MAPS Trackers and Prospects for ALICE 3

by Henrik Fribert (TUM)

Wednesday 18 Jun 2025, 11:00 → 12:00 Europe/Berlin

5101.EG.024 (Seminar Room)

Zoom Room:

https://cern.zoom.us/j/62412236769?pwd=Dl6UCAc4008Wtx9LDBTSSOrj99FJlA.1
Meeting ID: 624 1223 6769
Passcode: 294336

Abstract:

Monolithic Active Pixel Sensors (MAPS) are playing an increasingly important role in modern high-energy physics experiments due to their excellent spatial resolution, scalability, and low material budget. In the upcoming ALICE 3 upgrade, the entire detector system will be built using silicon detectors, with MAPS being employed as the inner and outer tracker.
This presentation explores whether MAPS detectors could also contribute to PID for ALICE 3 by measuring energy loss through the Time-over-Threshold (ToT) method. This idea is studied using BabyMOSS sensors, developed as part of the ITS3 (Inner Tracking System) upgrade testing campaign. The performance is evaluated using simulations based on Pythia and Geant4, focusing on the achievable performance and particle separation. Finally, the potential of including this approach in the fast simulation framework is discussed, with an outlook on its possible integration into ALICE 3.

Slides