Design and Performance of the GAMMA-400 Gamma-Ray Telescope for the Dark Matter Searches

TL;DR

The GAMMA-400 telescope is a high-resolution gamma-ray instrument designed to detect signals from dark matter interactions and study various gamma-ray sources across a broad energy range from space.

Contribution

This paper details the design specifications and expected performance of the GAMMA-400 telescope for dark matter searches and gamma-ray astronomy.

Findings

Energy range from 100 MeV to 3000 GeV

Angular resolution ~0.01 degrees at >100 GeV

Energy resolution ~1% at >10 GeV

Abstract

The GAMMA-400 gamma-ray telescope is designed to measure the fluxes of gamma rays and cosmic-ray electrons + positrons, which can be produced by annihilation or decay of the dark matter particles, as well as to survey the celestial sphere in order to study point and extended sources of gamma rays, measure energy spectra of Galactic and extragalactic diffuse gamma-ray emission, gamma-ray bursts, and gamma-ray emission from the Sun. The GAMMA-400 covers the energy range from 100 MeV to 3000 GeV. Its angular resolution is ~0.01 deg (E{\gamma} > 100 GeV), the energy resolution ~1% (E{\gamma} > 10 GeV), and the proton rejection factor ~10E6. GAMMA-400 will be installed on the Russian space platform Navigator. The beginning of observations is planned for 2018.