Study of prototypes of LFoundry active and monolithic CMOS pixels sensors for the ATLAS detector

TL;DR

This paper discusses recent developments in CMOS pixel sensors for the ATLAS detector, focusing on prototypes from LFoundry, aiming to provide a lower-cost alternative to traditional hybrid silicon detectors in high-energy physics experiments.

Contribution

It presents new active and monolithic CMOS sensor prototypes developed for the ATLAS experiment, demonstrating progress in integrated detector technology.

Findings

Successful development of LFoundry CCPD_LF and LFCPIX sensors

First fully monolithic prototype MONOPIX tested

Potential for reduced cost and complexity in detector design

Abstract

High Energy Particle Physics experiments at the LHC use hybrid silicon detectors, in both pixel and strip geometry, for their inner trackers. These detectors have proven to be very reliable and performant. Nevertheless, there is great interest in the development of depleted CMOS silicon detectors, which could achieve similar performances at lower cost of production and complexity. We present recent developments of this technology in the framework of the ATLAS CMOS demonstrator project. In particular, studies of two active sensors from LFoundry, CCPD_LF and LFCPIX, and the first fully monolithic prototype MONOPIX will be shown.