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SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 21: Si-Strips/CMS, Pixel/Sensor

T 21.4: Talk

Monday, March 20, 2023, 17:15–17:30, WIL/C307

Investigations of a BiCOMS Pixel SensorAndré Schöning1, Heiko Augustin1, Ivan Peric2, and •Benjamin Weinläder11Physikalisches Institut, Universität Heidelberg — 2IPE, Karlsruher Institut für Technologie

In the field of particle physics, High Voltage Monolithic Active Pixel Sensors (HV-MAPS) are promising candidates to fulfil the high demands on spatial and time resolution of modern detectors. A new generation of sensors, which combines the HV-MAPS architecture with a BiCMOS technology, opens new possibilities for faster timing in the sub-nanosecond regime.

The BeBiPix is a small test chip to investigate the aforementioned potentials. It is a fully analog sensor featuring two 3×3 pixel matrices with pixel sizes of 41× 41 µm2 and 81× 81  µ m2. During the ongoing testing phase several problems occurred, making an in-depth characterisation difficult. Identified problems such as an early break down at ∼10 V and a weak amplifier feedback are isolated and reproduced in simulations.

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