Dortmund 2021 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 14: Pixel detectors I
T 14.2: Vortrag
Montag, 15. März 2021, 16:15–16:30, Tn
Development of a Monolithic Pixel Sensor with sub-nanosecond Time Resolution in BiCMOS — Heiko Augustin1, Ivan Peric2, André Schöning1, and •Benjamin Weinläder1 — 1Physikalisches 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. The Mu3e experiment with its development of the MuPix sensor has strongly driven this technology in recent years. By using a 180 nm HV-CMOS technology, a typical time resolution in the order of 5 ns was achieved. To improve this further, the combination of HV-MAPS with a BiCMOS process opens up further possibilities, which was proven in the scope of the TT-PET project at the university of Geneva (Y. Bandi et al. 2018 JINST 13 C01007).
Following this concept and based on the experience with developing the MuPix a subsequent R&D project was started, with the ambition to achieve a time resolution in the sub-nanosecond regime. For this purpose the BiCMOS technology SG13S from IHP is used, which offers great advantages for high-frequency circuits. Using Cadence Virtuoso® a small pixel layout with a size of 25× 25 µm2 was designed. Simulations with a signal corresponding to a MIP showed high performance with a ToA Jitter of σToA = 86 ps and an ENC = 205 e−.