CERN Accelerating science

ATLAS Note
Report number	ATL-ITK-PROC-2024-038
Title	ATLAS ITk Pixel Detector Overview
Author(s)	Munoz Sanchez, Francisca (Manchester U.)
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	2024
Imprint	18 Oct 2024
Number of pages	6
In:	PoS ICHEP2024 (2025) 878
In:	42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.878
DOI	10.22323/1.476.0878
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Pixel detector, radiatin hardnes, silicon detectors
Abstract	To cope with the resulting increase in occupancy, bandwidth and radiation damage at the HL- LHC, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost part will consist of a pixel detector with an active area of about 13 m2. Several silicon sensor technologies will be employed. The pixel modules equipped with RD53B readout chips have been built and irradiation campaigns were done to evaluate their thermal and electrical performance before and after irradiation. This paper describes the most critical components of the detector and presents the status of the ITk-pixel project focusing on the lessons learned and the biggest challenges towards production, from mechanics structures to sensors, and it will forecast some of the challenges expected ahead.

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