Translator Disclaimer
29 July 2010 The tracker of the Fermi Large Area Telescope
Author Affiliations +
The Large Area Telescope (LAT) is the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi), an orbital astronomical observatory that was launched on 11 June 2008. Its tracker is a solid-state instrument that converts the gamma rays into electron-positron pairs which it then tracks in order to measure the incoming gamma-ray direction. The tracker comprises 36 planes of single-sided silicon strip detectors, for a total of 73 square meters of silicon, read out by nearly 900,000 amplifier-discriminator channels. The system operates on only 160 W of conditioned power while achieving > 99% single-plane efficiency within its active area and better than 1 channel per million noise occupancy. We describe the tracker's design and performance, and discuss in particular the excellent stability of the hardware response during the first two years of operation on orbit.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Bregeon and L. Baldini "The tracker of the Fermi Large Area Telescope", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77320I (29 July 2010);


PACT a sensitive 100 keV 10 MeV all sky...
Proceedings of SPIE (July 24 2014)
GAMCOTE: a prototype for an advanced Compton Telescope
Proceedings of SPIE (July 11 2016)
Versatile scheduler for automatic telescopes
Proceedings of SPIE (January 02 2002)
GBM: a gamma-ray burst monitor for GLAST
Proceedings of SPIE (March 11 2003)

Back to Top