The ATLAS ITk Detector System for the Phase-II LHC Upgrade

The ATLAS experiment is preparing for the HL-LHC upgrade an all-silicon Inner Tracker (ITk) that will replace the current Inner Detector. The ITk is under development with a pixel detector surrounded by a strip detector, covering a total area of almost 180m2. The ITk design provides large acceptance for tracking with at least nine points per track, high granularity and radiation hardness, combined with a low material budget. Both strips and pixels technologies have demonstrated the required tracking efficiency up to end-of-life dose. The talk will give an overview of the ITk design and performance and present the current status of the development of the strip and pixel detectors, summarising results achieved during prototyping and the current status of pre-production on various detector components.