Fermi Gamma-ray Space Telescope

A thin homogeneous telescope and polarimeter as the post-Fermi mission ?

Philippe Gros


High performance (angular resolution, sensitivity) MeV - GeV gamma telescope and polarimeter. I will present the power laws that describe the angular resolution and the point-like source differential sensitivity for a homogenous detector in the pair creation regime in the gamma energy range dominated by multiple scattering, under the hypothesis that optimal fits are used for the tracking. I will present the characterization of the dilution of the effective polarization asymmetry and the polarimetry performance under the same assumptions. Last, I will describe the HARPO project, aimed at validating these considerations experimentally.