Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 90: Silicon trackers 4
T 90.1: Vortrag
Donnerstag, 7. März 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 Schlaadt1,2, 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