Domain-Oriented Services for High Energy Physics in Polish Computing Centers

The large amounts of data collected by the High Energy Physics (HEP) experiments require intensive data processing on a large scale in order to extract their final physics results. In an extreme case – the experiments performed on the Large Hadron Collider at CERN – even a dedicated computational grid, Worldwide LHC Computing Grid (WLCG), had to be developed for the purpose of processing their data. The central processing tasks, such as event reconstruction and selection, are included in the computing models and managed by the central teams. However, there is no uniform framework dedicated to final data analyses carried out by research groups at the level of individual institutes. One of the goals of the PLGrid Plus project was to provide such an analysis framework for Polish scientific groups involved in HEP experiments. The framework is based on a set of services dedicated to data analysis, data access and software distribution constituting an efficient environment built on top of distributed resources of the Polish computing centers.