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T: Fachverband Teilchenphysik

T 90: Silicon trackers 4

T 90.2: Vortrag

Donnerstag, 7. März 2024, 16:15–16:30, Geb. 30.22: kl. HS B

Test beam characterization of the H2M chip designed in a 65 nm CMOS imaging process — •Sara Ruiz Daza^1,3, Rafael Ballabriga², Eric Buschmann², Michael Campbell², Raimon Casanova Mohr², Dominik Dannheim², Ana Dorda², Finn Feindt¹, Philipp Gadow², Ingrid-Maria Gregor^1,3, Karsten Hansen², Lennart Huth¹, Iraklis Kremastiotis², Stefano Maffessanti¹, Younes Otarid², Christian Reckleben¹, Judith Schlaadt¹, Simon Spannagel¹, Tomas Vanat¹, Gianpiero Vignola^1,3, and Håkan Wennlöf¹ — ¹DESY, Hamburg, Germany — ²CERN, Geneva, Switzerland — ³University of Bonn, Bonn, Germany

The Tangerine project is studying monolithic active pixel sensors (MAPS) that are manufactured using a 65 nm CMOS imaging process. To investigate this technology and explore the design challenges of porting a hybrid pixel de- tector architecture into a monolithic chip, the H2M (Hybrid-to-Monolithic) test chip has been developed. The chip matrix consists of 64x16 square pixels with a size of 35x35 μm2. The sensor is designed in the so-called n-gap layout to enhance fast charge collection. The H2M chip can operate in four different acquisition modes: ToT, ToA, Photon Counting, and Triggered mode. The characterization of these modes provides a fundamental understanding of the analog/digital front-end designs. This contribution presents the validation and characterization of all four readout modes in the laboratory. It also presents first results on detection efficiency, spatial resolution, and time resolution obtained in test beam campaigns.

Keywords: H2M; Pixel; Monolithic; CMOS; Testbeam