The experiment investigates properties of electron/positron collisions with protons on the HERA collider at DESY Hamburg at the centre of mass energy 920 GeV. Parton distribution functions of proton, discovery of hard diffraction in ep collisions, investigation of virtual photon structure, jet physics and neutral current properties, are the main topics of the experiment. Since HERA was stopped in the middle of 2007, the data analysis and publishing of physical results are the main activities of the experiment now.
Our group contributed to the hardware of calorimeter subdetectors – read-out boards in the liquid argon calorimeters and mechanical construction and electronics of the scintillation fibre calorimeter Spacal. We had been for a long time responsible for Spacal energy calibration, performed data analysis on deep inelastic scattering and low Q2 jet production sensitive to the structure of virtual photon. At present we participate in reviewing papers prepared for publication.
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