8th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors, Taipei, Taiwan

The Silicon Strip Tracker of the Fermi Large Area Telescope: performance after three years of operation in space

8 Dec 2011, 11:30

20m

Activity Center (Academia Sinica)

ORAL Applications in Space, Medical, Biology, Material Sciences Applications in Space, Medical, Biology, Material Sciences

Speaker

Dr Luca Baldini (INFN Pisa)

Description

Title: The Silicon Strip Tracker of the Fermi Large Area Telescope: performance after three years of operation in space Author: L.Baldini, INFN Pisa The Large Area Telescope (LAT) is the main instrument onboard the Fermi Gamma-ray Space Telescope, an orbital observatory launched in low-Earth orbit on June 11 2008 to survey the high-energy gamma-ray sky. The LAT tracker/converter serves the twofold purpose of converting the incoming gamma-ray into an electron-positron pair and tracking the latter in order to measure the original photon direction. With its 73 square meters of single-sided silicon-strip detectors, read out by some 900,000 independent electronics channel, it is the largest solid-state tracker ever built for a space application. The tracker system operates on 160 W of conditioned power while achieving a single-plane hit efficiency in excess of 99% and a noise occupancy at the level of 1 channel per million. We describe the basic tracker design and the performance throughout the first three years of operation in orbit.

Presentation materials

Slides

1208_Baldini_lbaldini_hstd8_v1.pdf