Simulations of the EAS Development in the Atmosphere and Detectors for Experiments with the High-Altitude Ionization Calorimeter ADRON-55

To study EAS cores (beams of most energetic particles near the shower axis) at E0 ≳ 1015 eV (√s ≳ 2 TeV), which carry the most valuable information about the types of primary particles and the characteristics of their interactions in the atmosphere, a new set of detectors has been developed, including a high-altitude ionization calorimeter “ADRON-55”, located at a high-altitude scientific station on the Tien Shan. The first results of modeling the development of EAS from primary protons, main groups of nuclei and hypothetical strangelets at various energies, related to measurements with the “ADRON-55” calorimeter, are presented.