ATLAS DEMO Inheritance commissioning and performance testing using SCADA and PLC based automatized procedures

By the end of 2024, to cope with needs of future ATLAS tracking detector (ITk), surface integration and testing facility at CERN was fully equipped with a new large power and low temperature cooling system nick-named “DEMO Inheritance” based on the 2PACL technique. This paper will discuss implemented control system solutions for both the cooling plant and the distribution system installed in the detector proximity at the assembly clean room. The PLC and SCADA software has been fully deployed, following CERN UNICOS framework and allowed for successful and rapid initial performance test with 50kW dummy load. In this paper we will describe in details SCADA and PLC based procedures used for automatic system performance tests with no operator attendance as the first step in future commissioning of the final detector cooling systems of ATLAS and CMS detectors at the High Luminosity era of the Large Hadron Collider at CERN. These procedures running unattended allow for significant commissioning time reduction which is a key requirement for very challenging schedule.