Up-to-date test beam results of ATLAS ITk pixel sensors and modules
Year: 2026
Type: article
Abstract: The ATLAS Inner Detector will be replaced by a new all-silicon Inner Tracker (ITk) in 2029 to meet the challenges of the High Luminosity LHC (HL-LHC). The ITk pixel system combines 3D sensors at the innermost layer, operating after exposure to fluences of up to 2 × 10 16 n eq /cm 2 , with thin n-in-p planar modules in the outer layers. Beam tests are essential for qualifying these sensors and modules before and after irradiation. Recent test beam campaigns in 2024 evaluated new fabrication techniques, thick planar sensors, and modules with the latest ITkPixV2 readout chip, while the 2025 program introduces novel 3D triplet and planar quad configurations. Recent test beam results will be presented here, highlighting sensor performance and readiness of the ITk pixel detectors for HL-LHC operation.
Source: Journal of Instrumentation
Institutions: European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, University of Genoa, University of Glasgow, University of Chicago, Czech Technical University in Prague, University of Udine, Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, University of Göttingen, University of Bergen, TU Dortmund University, Lawrence Berkeley National Laboratory, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Lancaster University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,290
Funder: CERN
OpenAlex ID: W7119744163