ATLAS ITk strip sensor quality control procedures and testing site qualification

Abstract The high-luminosity upgrade of the Large Hadron Collider, scheduled to become operational in 2029, requires replacement ATLAS Inner Detector with a new all-silicon Tracker. Radiation hard n + -in-p micro-strip silicon sensors were developed by Tracker strip collaboration and are produced Hamamatsu Photonics K.K. Production total amount 22000 has started 2020 will continue until 2025. sensor responsibility monitor quality fabricated devices performing detailed measurements individual characteristics comparing obtained results tests done manufacturer. Dedicated Quality Control procedures check whether delivered large-format adhere specifications. institutes testing pre-production production ITk had initially be qualified for multiple high-throughput successfully completing Site Qualification process. qualification process described this paper.