A Web-based control and monitoring system for DAQ applications

A comprehensive and efficient environment and data monitoring system is a vital part of any HEP experiment. In this paper we describe the software web-based framework which is currently used by the CMD-3 Collaboration at the VEPP-2000 Collider and partially by the Muon g-2 experiment at Fermilab to monitor the status of data acquisition and the quality of data taken by the experiments. The system is designed to meet typical requirements and cover various use-cases of DAQ applications, starting from the central configuration, slow control data monitoring, data quality monitoring, user-oriented visualization, control of the hardware and DAQ processes, etc. Being an intermediate middleware between the front-end electronics and the DAQ applications the system is focused to provide a high-level coherent view for shifters and experts for robust operations. In particular, it is used to integrate various experiment dependent monitoring modules and tools into a unified Web oriented portal with appropriate access control policy. The paper describes the design and overall architecture of the system, recent developments and the most important aspects of the framework implementation.