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Proceedings Paper

Gamma-ray lens development status for a European Gamma-Ray Imager
Author(s): F. Frontera; A. Pisa; V. Carassiti; F. Evangelisti; G. Loffredo; D. Pellicciotta; K. H. Andersen; P. Courtois; L. Amati; E. Caroli; T. Franceschini; G. Landini; S. Silvestri; J. B. Stephen
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Paper Abstract

A breakthrough in the sensitivity level of the hard X-/gamma-ray telescopes, which today are based on detectors that view the sky through (or not) coded masks, is expected when focusing optics will be available also in this energy range. Focusing techniques are now in an advanced stage of development. To date the most efficient technique to focus hard X-rays with energies above 100 keV appears to be the Bragg diffraction from crystals in transmission configuration (Laue lenses). Crystals with mosaic structure appear to be the most suitable to build a Laue lens with a broad passband, even though other alternative structures are being investigated. The goal of our project is the development of a broad band focusing telescope based on gamma-ray lenses for the study of the continuum emission of celestial sources from 60 keV up to >600 keV. We will report details of our project, its development status and results of our assessment study of a lens configuration for the European Gamma Ray Imager (GRI) mission now under study for the ESA plan Cosmic Vision 2015-2025.

Paper Details

Date Published: 13 June 2006
PDF: 12 pages
Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 626627 (13 June 2006); doi: 10.1117/12.672993
Show Author Affiliations
F. Frontera, Univ. of Ferrara (Italy)
INAF - IASF (Italy)
A. Pisa, Univ. of Ferrara (Italy)
V. Carassiti, Istituto Nazionale Fisica Nucleare (Italy)
F. Evangelisti, Istituto Nazionale Fisica Nucleare (Italy)
G. Loffredo, Univ. of Ferrara (Italy)
D. Pellicciotta, Univ. of Ferrara (Italy)
K. H. Andersen, Institute Laue-Langevin (France)
P. Courtois, Institute Laue-Langevin (France)
L. Amati, INAF - IASF (Italy)
E. Caroli, INAF - IASF (Italy)
T. Franceschini, INAF - IASF (Italy)
G. Landini, INAF - IASF (Italy)
S. Silvestri, INAF - IASF (Italy)
J. B. Stephen, INAF - IASF (Italy)

Published in SPIE Proceedings Vol. 6266:
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Martin J. L. Turner; Günther Hasinger, Editor(s)

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