Strip detector for the ATLAS detector upgrade for the high — luminosity LHC

The planned HL-LHC (High Luminosity LHC) expected to start in 2025 is being designed to maximise the physics potential of the LHC through a sizeable increase in the luminosity, reaching 1–10³⁵ cm²s⁻¹ after 10 years of operation [1]. A consequence of this increased luminosity is the expected radiation damage at an integrated luminosity of 3000 fb⁻¹, requiring the strip part of the tracking detectors to withstand hadron fluencies of up to 1.2–10¹⁵ MeV neutron equivalent per cm² and ionising doses of up to 50.4MRad. With the addition of increased readout rates, a complete re-design of the current ATLAS Inner Detector (ID) [2] is being developed as the Inner Tracker (ITk)[1], which will consist of both strip and pixelated silicon detectors.