Lhcmaster - a system for storage and analysis of data coming from the ATLAS simulations

This paper presents the Lhcmaster system designed to aid the physicist in the work of organizing and managing the large number of files that are produced by simulations of high energy physics experiments. The implemented system stores and manages data files produced by the simulations of the ATLAS detector, making them available for physicists. We present an outline of the Lhcmaster-G, a Grid version of the system, that may be implemented in the future in order to substitute the Lhcmaster for a more effective and powerful tool.