Characterisation of a High-Voltage Monolithic Active Pixel Sensor as a Timing and ROI Triggering Plane for the DESY II Test Beam Facility
Year: 2026
Type: dissertation
Abstract: TelePix2 is a High-Voltage Monolithic Active Pixel Sensor (HV-MAPS) to serve as both a timing and ROI-triggering plane. This thesis evaluates the performance and suitability of TelePix2, with a focus on deployment at the DESYII Test Beam Facility. Test-beam measurements show a TelePix2 hit-efficiency above 99.9% at a noise rate below 5 Hz/cm2. The time resolution of the timestamped hits is better than 4 ns, more than sufficient to separate particle tracks from different DESY II revolutions. The time resolution of the TelePix2 trigger signal, the Fast Hit-OR, is better than 3 ns. Measurements of the Fast Hit-OR are synchronised with the hit data stream to investigate the effects of hit position and rate on Fast Hit-OR timing. The efficiency of the Fast Hit-OR signal is validated across different particle rates. These results also evidence the suitability of HV-MAPS for applications such as the upgrade of the LHCb detector. The successful integration of TelePix2 into both DAQ systems used by the ADENIUM telescope at the DESY~II Test Beam Facility and the Timepix4 telescope at the SPS H8 beam line is demonstrated.
Author: Wintle, Arianna Nicole
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7167709251