Fermi Gamma-ray Space Telescope

LAT On-Orbit Performance at 10 Years

Robert Cameron


The Fermi observatory, and the Large Area Telescope (LAT) on Fermi were designed and built with an operating lifetime goal of 10 years. The Fermi Large Area Telescope (LAT) has been successfully operating in low Earth orbit almost continuously since its initial turn-on on 24 June 2008, for over 10 years now. We present details of the past and current performance of the LAT detector and data acquisition sub-systems, together with long-term trends of key performance measures, and assess the expected performance in continued future operation. We also describe the future of the ground-based operations and support for the LAT.