Abstract
The article discusses the astrophysical motivation for creating a large-scale facility with an area of 100 km \({}^{2}\) , designed for research in the field of PeV-range gamma-ray astronomy and ultra-high-energy cosmic ray physics. As a possible experimental implementation of such a facility, the project of the astrophysical complex TAIGA-100 is considered. Its key elements are wide-angle atmospheric Cherenkov modules with a field of view of \({\sim}1\) sr and water Cherenkov detectors with an area of \({\sim}40\) m \({}^{2}\) . Additionally, the complex is expected to include imaging atmospheric Cherenkov telescopes for sub-PeV gamma-ray astronomy, as well as scintillation counters, fluorescence detectors, and radio antennas for studying the flux of ultra-high-energy cosmic rays. To demonstrate the future facility’s effectiveness in addressing fundamental astrophysical tasks, it is planned to create a prototype with an area of \({\sim}0.5\) km \({}^{2}\) .
