Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 90: Silicon trackers 4

T 90.1: Talk

Thursday, March 7, 2024, 16:00–16:15, Geb. 30.22: kl. HS B

Laboratory Characterization of an H2M Monolithic Pixel Detector Prototype — Rafael Ballabriga³, Eric Buschmann³, Michael Campbell³, Raimon Casanova Mohr³, Dominik Dannheim³, Ana Dorda³, Finn Feindt², Philipp Gadow³, Ingrid-Maria Gregor², Karsten Hansen², Lennart Huth², Iraklis Kremastiotis³, Stefano Maffessanti³, Lucia Masetti¹, Younes Otarid³, Christian Reckleben², Sara Ruiz Daza², •Judith Schlaadt^1,2, Simon Spannagel², Tomas Vanat², Gianpiero Vignola², and Haakan Wennloef² — ¹JGU, Mainz, Germany — ²DESY, Hamburg, Germany — ³CERN, Meyrin, Schweiz

In the context of developing monolithic active pixel sensors (MAPS), the H2M (hybrid-to-monolithic) project represents the joint effort of CERN, DESY and IFAE to design and test a monolithic chip with an integrated hybrid pixel detector architecture. This pixel sensor was designed and fabricated in a 65nm CMOS imaging process and consists of 64 x 16 square pixels with a 35um pitch. It makes use of the so-called n-gap layout which improves the charge collection from pixel edges and corners. The laboratory characterization of the first prototypes started in August 2023 with a particular focus on the trimming DAC as it allows for threshold adjustment for each individual pixel with a 4-bit resolution. On this basis, a procedure was implemented to determine the optimal setting for each pixel and eventually minimize the threshold dispersion for the whole matrix. This contribution presents preliminary results of the described measurements.

Keywords: hybrid-to-monolithic; MAPS; CMOS; Tangerine