Abstract
During the second long shutdown (LS2) of the CERN Large Hadron Collider (LHC), the Detector Control System (DCS) of the Compact Muon Solenoid (CMS) Electromagnetic Calorimeter (ECAL) is undergoing a large software upgrade at various levels. The ECAL DCS supervisory system has been reviewed and extended to migrate the underlying software toolkits and platform technologies to the latest versions. The resulting software will run on top of a new computing infrastructure, using the WinCC Open Architecture (OA) version 3.16 and newly developed communication drivers for some of the hardware. The ECAL DCS has been configured and managed from a different control version system and stored with more modern encoding and file formats. A new set of development guidelines has been prepared for this purpose, including conventions and recommendations from the CMS Central DCS and CERN Joint Controls Project (JCOP) framework groups. The large list of modifications also motivated the revision and reorganization of the software architecture, which is needed to resolve and satisfy additional software dependencies. Many modifications also aimed to improve the installation process, anticipating in some cases works for the next long shutdown upgrade.
Highlights
The Electromagnetic Calorimeter [1] is one of the detectors of the Compact Muon Solenoid (CMS) experiment, sitting at the CERN Large Hadron Collider (LHC)
We present in this document the main software updates, focusing on the migration of different software toolkits and platforms in terms of maintainability, compatibility and their impact in the existing architecture
In parallel to the tasks foreseen for the LS2, the Electromagnetic Calorimeter (ECAL) Detector Control System (DCS) team had to accommodate a large portion of time to migrate the existing architecture to run in newer platform versions
Summary
The Electromagnetic Calorimeter [1] is one of the detectors of the CMS experiment, sitting at the CERN LHC. The DCS software of the ECAL detector monitors and controls a large. During the LHC long shutdowns, the architecture is typically reviewed and extended to include features that require extensive testing and long validation periods. The second long shutdown (LS2) has been extended by one year. This extension allowed us to implement large software updates, as described in the CMS ECAL DCS upgrade plan [3], as well as to carry out software migrations to bring the systems up to date, in line with the latest versions of the control platform and frameworks. We present in this document the main software updates, focusing on the migration of different software toolkits and platforms in terms of maintainability, compatibility and their impact in the existing architecture
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