Abstract
| The new ATLAS Inner Tracker (ITk) will replace the current tracking system in ATLAS to cope with the challenging conditions during the high-luminosity phase of the Large Hadron Collider (HL-LHC). The ITk is an all-silicon detector consisting of a pixel inner tracker and a silicon microstrip outer tracker. This contribution focuses on the full system tests of the strip sub-detector that are being developed to verify the design and evaluate the performance of detector components prior to production. Moreover, important lessons are learned on these large-scale system tests for the detector integration as well as operation of the full detector. Two setups at CERN and at DESY (Hamburg/Germany) target the design verification of the central barrel section around the interaction point and the end-cap section covering the forward region. In both setups, silicon sensors mounted on local support structures are connected to electrical, optical and cooling services. As such it is possible to validate the detector design, verify the detector DAQ and perform tests with the services, e.g. concerning the dual-phase CO2 cooling. In this contribution, we will give a general overview of the developed system tests for the ITk strip detector and will present a selection of results from performance measurements. |