The experimental activities of the Department are currently concentrated on the ATLAS experiment at the LHC collider at CERN. LHC started to provide sizable amounts of experimental data at highest energies ever only during the present year 2010. The collider is still under development, its parameters being tuned. The amount of collected data will increase with the optimization of the LHC performance. Discoveries reached by LHC experiments can thus be expected only in the next few years. Significant results reached by the Department members are thus connected with the previous era of CERN experiments – the DELPHI experiment at the electron-positron collider LEP.
