Abstract
A new generation of experiments on relativistic nuclear physics is planned to be started in the nearest years at the Nuclotron-based Ion Collider facility (NICA) under construction at the Joint Institute for Nuclear Research in Dubna. The fixed target experiment BM@N (Baryonic Matter at Nuclotron) is considered as a first stage towards the implementation of the physics program available at NICA. For a successful accomplishment of the BM@N physics program, a well-developed and tested software package for simulation, digitization, reconstruction and analysis of collision events and other supporting tasks is of utmost importance. The data flow scheme of the experiment is shown. Offine and online software systems, such as the main BmnRoot framework, databases of the experiment, data monitoring and others providing information support for the experiment are presented. The implementation of the software systems is a necessary stage for the successful operation of the BM@N experiment.
Highlights
The raw data are converted to the ROOT [4] format (hierarchical ROOT trees), and event reconstruction and physics analysis are performed at Nuclotron-based Ion Collider facility (NICA) distributed systems
According to the programme of the Joint Institute for Nuclear Research, a flagship project for the years is the construction of an accelerator-accumulator complex and experimental facilities for the study of hot and dense baryonic matter at the energy range of maximum baryon density and study of nucleon spin structure and polarization phenomena
The data stream from the detector readout systems, which include the detector readout electronics (DRE) and local data collectors (LDC), up to the data storage of the BM@N experiment is organized as a sequential data-driven pipeline
Summary
The raw data are converted to the ROOT [4] format (hierarchical ROOT trees), and event reconstruction and physics analysis are performed at NICA distributed systems. A RFBR grant has been assigned for the development of the following set of information systems designed for online and offline processing of experiment data: online electronic logbook, geometry information system, condition database, configuration database and event indexing system.
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