Development of depleted monolithic pixel sensors in 150 nm CMOS technology for the ATLAS Inner Tracker upgrade

TL;DR

This paper introduces LF-Monopix, a monolithic pixel sensor in 150 nm CMOS technology, designed for the HL-LHC ATLAS upgrade, demonstrating potential for cost-effective, low-material detectors with promising simulation and measurement results.

Contribution

The paper presents a novel fully monolithic DMAPS prototype in 150 nm CMOS for HL-LHC, showing feasibility and advantages over hybrid designs.

Findings

Successful design and simulation of LF-Monopix sensor

Measurement results validate sensor performance

Potential for reduced cost and material in detector modules

Abstract

This work presents a depleted monolithic active pixel sensor (DMAPS) prototype manufactured in the LFoundry 150 nm CMOS process. The described device, named LF-Monopix, was designed as a proof of concept of a fully monolithic sensor capable of operating in the environment of outer layers of the ATLAS Inner Tracker upgrade for the High Luminosity Large Hadron Collider (HL-LHC). Implementing such a device in the detector module will result in a lower production cost and lower material budget compared to the presently used hybrid designs. In this paper the chip architecture will be described followed by the simulation and measurement results.