TAIGA stands for “Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy” and is a complex, hybrid detector system for ground-based gamma-ray astronomy from a few TeV to several PeV, and for cosmic ray studies from 100 TeV to 1000′s of PeV. TAIGA will search for ”Pevatrons” (ultra-high energy gamma-ray sources) and measure the composition and spectrum of cosmic rays in the transition region from Galactic to Extragalactic origin. TAIGA includes TAIGA-HiSCORE – an array of wide-angle integrating air Cherenkov stations, TAIGA-IACT – an array of Imaging Atmospheric Cherenkov Telescopes – an array of particle detectors, both on the surface and underground, Tunka-133 – an integrating air Cherenkov array and scintillation facilities – TAIGA-Grande and TAIGA-Muon.

This multi-component detector is aimed for cosmic and gamma rays studies within five orders of magnitude in energy and will become one of the main detectors in the TeV till 1000’s of PeV energy range.

• studying of known local galactic and extragalactic sources of
  gamma-rays with energies higher than 2-10^13 eV
• searching for astrophysical objects accelerating galactic CRs to energies higher than 10^15 eV
• searching for new extragalactic sources of gamma rays with energies above 2-10^13 eV
• searching for diffuse gamma rays in the energy region above 10^14 eV
• studying of the energy spectrum and mass composition of CR in the energy region of 10^14-10^18 eV
• searching for astrophysical nanosecond optical transients

The unique feature of the complex is the integration into a single system of installations with detectors of different types.