THOR-SR: TGF and High-energy astrophysics Observatory for gamma-Rays on board the Space Rider

THOR-SR (TGF and High-energy astrophysics Observatory for gamma-Rays on board the Space Rider) mission is a high-energy astrophysics pathfinder mission designed to explore a range of phenomena that includes gamma-ray astrophysics’ emissions, space weather and terrestrial gamma-ray flashes (TGFs). The mission’s scientific payload is based on CdTe and Si detectors with a large field of view (up to 2π sr) provided by a four-layer CdTe stack detector. The detector operates in the 0.1-10 MeV energy range and will be used to perform spectroscopy, imaging, time variability, and polarimetry. THOR prototype performance tests will be performed, presented and discussed. In particular, tests under ESRF polarized beam and ICNAS proton beam facilities, that will allow to validate THOR operation and performance potential during the Space Rider two months flight.