Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 112: Silicon trackers 5

T 112.1: Vortrag

Freitag, 8. März 2024, 09:00–09:15, Geb. 30.22: kl. HS A

Timing studies of a depleted monolithic pixel sensor in 180 nm technology — Christian Bespin, Ivan Caicedo, Jochen Dingfelder, Hans Krüger, •Lars Schall, and Norbert Wermes — Physikalisches Institut, Universität Bonn, Deutschland

The increasing availability of commercial CMOS processes with high-resistivity wafers has fueled the R&D of depleted monolithic active pixel sensors (DMAPS) for usage in high energy physics experiments. One of these developments is a series of monolithic pixel detectors with column-drain readout architecture aiming to meet ATLAS ITk outer pixel layer requirements. The TJ-Monopix series features a small collection electrode and is fabricated in a 180 nm CMOS imaging process.

The latest iteration, TJ-Monopix2, features a pixel size of 33 um x 33 um and 25 ns time-stamping capabilities. The front-end aims at a low power consumption (1 uW per pixel) while maintaining high signal-to-noise ratio and time resolution. This talk presents recent results of timing studies on non-irradiated devices in the laboratory and in particle beams, evaluating their time efficiency and resolution.

Keywords: monolithic; depleted; cmos; timing