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Comptes Rendus Physique
Volume 16, n° 6-7
pages 600-609 (août 2015)
Doi : 10.1016/j.crhy.2015.07.002
Space detectors for gamma rays (100 MeV–100 GeV): From EGRET to Fermi LAT
Détecteurs spatiaux de rayons gamma (100 MeV–100 GeV) : Depuis EGRET jusqu'à Fermi-LAT
 

David J. Thompson
 Astroparticle Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA 

Abstract

The design of spaceborne high-energy ( ) γ -ray detectors depends on two principal factors: (1) the basic physics of detecting and measuring the properties of the γ rays; and (2) the constraints of operating such a detector in space for an extended period. Improvements in technology have enabled major advances in detector performance, as illustrated by two successful instruments, EGRET on the Compton Gamma Ray Observatory and LAT on the Fermi Gamma-ray Space Telescope.

The full text of this article is available in PDF format.
Résumé

L'architecture des détecteurs spatiaux de rayons gamma de hautes énergies ( ) dépend de deux facteurs principaux : (1) les principes physiques de base permettant la détection et la mesure des propriétés des rayons gamma et (2) les contraintes de fonctionnement de tels détecteurs dans l'espace sur de longues durées. Les progrès techniques ont permis des avancées majeures concernant les performances des détecteurs telles qu'illustrées par les deux instruments que sont EGRET à bord du Compton Gamma Ray Observatory et LAT à bord du Fermi Gamma-ray Space Telescope.

The full text of this article is available in PDF format.

Keywords : Gamma rays, Detectors, Space

Mots-clés : Rayons gamma, Détecteur spatiaux, Espace, Production de paires




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