Development of a Standardised Readout System for Active Pixel Sensors in HV/HR-CMOS Technologies for ATLAS Inner Detector Upgrades

The LHC Phase-II Upgrade results in new challenges for tracking detectors for example in terms of cost effectiveness, resolution and radiation hardness. Active Pixel Sensors in HV/HR-CMOS technologies show promising results coping with these challenges. In order to demonstrate the feasibility of hybrid modules with active CMOS sensors and readout chips for the future ATLAS Inner Tracker, ATLAS R&D; activities have started. After introducing the basic concepts and the demonstrator program, the development of an ATLAS compatible readout system will be presented as well as tuning procedures and measurements with demonstrator modules to test the readout system.