Speaker
Description
Nuclotron-based Ion Collider fAcility (NICA) experiments at the Joint Institute for Nuclear Research have already generated substantial volumes of simulated and experimental (BM@N facility) data, and it is expected that the overall number of collected events will increase from the current value of hundreds of millions to expected several billion events per year. An information system based on the event database (Event Catalogue) used in modern high-energy physics experiments is required to store and index information on events obtained at the NICA's facilities, allowing to quickly search and use only necessary physics events based on various criteria for further processing and analysis. The main goal of the information system described in the report is to improve the performance of physics analyses and data quality checks. The Event Metadata System implemented for the NICA experiments is integrated with other experiment systems and software, in particular, the ROOT-based frameworks. The access to the Event Catalogue is provided via several developed interfaces, such as the Web application, REST API, and dedicated C++ interface. The design and details of the realization of the system are presented.
