Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 115: Detectors 10 (semiconductors)
T 115.2: Vortrag
Freitag, 8. März 2024, 09:15–09:30, Geb. 30.23: 2/1
Simulation of Hexagonal Pixel Configurations in Monolithic Active Pixel Sensors — •Larissa Mendes1, Simon Spannagel1, Manuel Alejandro del Rio Viera1, Lennart Huth1, Ingrid-Maria Gregor1,2, Håkan Wennlöf1, Anastasiia Velyka1, and Adriana Simancas1 — 1Deutsches Elektronen-Synchrotron DESY, Germany — 2Universität Bonn, Germany
The Tangerine Project is investigating monolithic active pixel sensors (MAPS) fabricated using the 65 nm CMOS imaging process with a small collection electrode. The complex interplay between different doping regions in the silicon sensor and the resulting non-linear electric field configuration makes it challenging to predict sensor behavior accurately. Therefore, precise simulations are essential for describing and predicting the key performance parameters of the sensor, thereby contributing to an optimized performance.
A simulation approach for achieving this type of characterization may involve a combination of electrostatic field simulations and Monte Carlo techniques. This study explores a hexagonal pixel grid to enhance sensor performance as an alternative to conventional square or rectangular pixel layouts. The layouts are evaluated based on efficiency, cluster size, and spatial resolution, and a comparison is made between square and hexagonal pixel geometries. Transient simulations in detectors were also executed to model the time-dependent behavior of detectors in response to incident particles of hexagonal pixels. These investigations underscore the potential of the hexagonal pixel grid to improve the performance of MAPS in high-energy physics experiments.
Keywords: MAPS; monolithic active pixel sensors; silicon; hexagonal pixels