CERN Accelerating science

Article
Title	The ALICE Pixel Readout Upgrade
Author(s)	Sarritzu, Valerio (INFN, Cagliari ; Cagliari U.)
Collaboration	ALICE Collaboration
Publication	2023
Number of pages	13
In:	PoS Pixel2022 (2023) 027
In:	10th International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging (PIXEL 2022), Santa Fe, USA, 11 - 16 Dec 2022, pp.027
DOI	10.22323/1.420.0027
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ALICE
Project	CERN-EP-RDET
Abstract	The ALICE experiment at CERN is developing an upgrade of the three innermost layers of the Inner Tracking System (ITS3) to be installed during the Long Shutdown 3 of the LHC (2026–28). Based on a commercial 65 nm CMOS imaging technology for monolithic active pixel sensors, it consists of truly cylindrical wafer-scale bent stitched detectors that can be installed as close as 18 mm to the interaction point and will dramatically reduce the material budget in the region close to the interaction point to 0.05% X0 per layer. This contribution provides an overview on the development of sensor readout for prototypes based on the 65 nm technology within the context of the ITS3 upgrade R&D;, as well as an outlook on the final readout system, including requirements, plans, and current advancements.
Copyright/License	© 2023-2024 The author(s) (License: CC-BY-NC-ND-4.0)

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