A facility and a web application for real-time monitoring of the TTC backbone status

Abstract

The Timing Trigger and Control (TTC) system distributes timing signals from the LHC Radio Frequency (RF) source to the four experiments (ATLAS, ALICE, CMS and LHCb). A copy of these signals is also transmitted to a monitoring system, installed in the CERN Control Centre, which provides continuous measurement of selected parameters. A web application has been designed to ensure real time remote monitoring and post-mortem analysis of these data. The implemented system is aimed at providing a tool for a fast detection of TTC signal abnormality and unavailability which results in reliability improvement of the whole TTC dependent infrastructure. The paper discusses the architecture of the monitoring system including measurement setup as well as various concerns of data acquisition, storage and visualization.