The activity of the Colliding Beams Department is mainly concentrated on preparation and conduct of collider experiments aimed at studying fundamental problems of high-energy elementary particle physics. Fixed-target accelerator experiments and R&D are also carried out to develop research techniques, equipment, and data processing methods and to train specialists.

The Colliding Beams Department was established in 1987 by merging the groups that participated in the RISK and SIGMA–AYAKS experiments at IHEP (Serpukhov). The underlying idea was to set up a team that would take part in construction of the facility and implementation of the research programme in the scope of the DELPHI experiment at the LEP (CERN).

Since 1992 the CBD scientists have been participating in the ATLAS experiment at the LHC (CERN). During the preparation of the experiment, a shop was established at the CBD for manufacturing large-area coordinate detectors for the ATLAS muon spectrometer. Now the CBD scientists take part in analysis of experimental data within the ATLAS working group on the search for the Higgs boson.

Since 1992 the CBD scientists have been participating in the D0 experiments at the Tevatron (FNAL). Their work was to construct and maintain the small-aperture muon tracker of the D0 facility. Now the CBD scientists take part in analysis of experimental data within the working group on the study of processing involving the b quark.

Since 2005 the CBD scientists have been participating in the BES–3 experiment at the BEPC–II electron–positron collider at IHEP (Beijing, China). They are involved in development of software for the experiment and take part in data analysis. The main scientific goals are to study properties of the charmonium, charmed particles, and tau leptons and to carry on spectroscopy of light hadrons.

The research group led by D. Yu. Bardin carries out theoretical studies and precision calculations of complex processes at colliders.

The CBD scientists participate in the fixed-target experiment COMPASS at the SPS (CERN). Now analysis of the data from the HARP experiment, in which they have been taking part since 1999, is coming to the end.

The CBD carries our methodological studies on development and application of new types of semiconductor detectors for elementary particle, such as micropixel avalanche photodiodes (MAPD) and pixel detectors based on gallium arsenide.

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