Speaker
Description
The ATLAS and CMS Phase 2 upgrade presents multiple challenges, one of which is the need to test the 2PACL based CO2 detector cooling system’s performance of multiple units in a short time frame with a limited team.
To address this requirement, various solutions were explored in the development of 2PACL control systems, ultimately leading to the implementation of a feature called Autoscan. This approach enables the automatic operation of different actuators, allowing them to follow multiple predefined test scenarios within a set time frame. Test requests are queued to facilitate continuous, large-scale testing, and the system can initiate tests outside of standard working hours, thereby extending the overall available testing time.
The development process ensured that the Autoscan implementation remains independent of PLC development, making it easily adaptable to different subsystems without requiring tracking of multiple PLC code versions. In its current state, the feature fully leverages the UNICOS control framework, simulating manual operations from the SCADA interface to the PLC. The PLC retains its independent development strategy, unaffected by the Autoscan feature, and remains the primary system for interlocking in case of issues.
Each subsystem hosts its own Autoscan functionality, ensuring that systems operate independently during scans. This feature allows cooling experts to focus on data analysis and provides a streamlined process for performing all necessary tests before the start of Long Shutdown 3 (LS3).