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Proceedings Paper • Open Access

Laue lens: the challenge of focusing gamma rays
Author(s): N. Barrière; P. von Ballmoos; L. Natalucci; G. Roudil; P. Bastie; P. Courtois; M. Jentschel; N. V. Abrosimov; J. Rousselle

Paper Abstract

The development of a Laue lens to focus soft gamma rays appears today as the only solution to improve significantly telescopes’ sensitivity and angular resolution in the 100 keV – 1 MeV domain. A Laue lens makes use of diffraction in the volume of a large number of crystal tiles carefully orientated to concentrate incident radiations from a large collecting area in a small focal spot. Various type of crystal have been measured and show excellent results, with angular spread of diffracting planes in the range 15-45 arcsec, and reflectivities up to 31 % at 600 keV. Precision of orientation of crystals is demanding because of the long focal length involved by small angles of diffraction. A prototype currently being built by a French collaboration including the CESR, the CNES and Thales Alenia Space aims to achieve 10 arcsec of tolerance.

Paper Details

Date Published: 21 November 2017
PDF: 7 pages
Proc. SPIE 10566, International Conference on Space Optics — ICSO 2008, 1056603 (21 November 2017); doi: 10.1117/12.2308289
Show Author Affiliations
N. Barrière, INAF - IASF Roma (Italy)
P. von Ballmoos, CESR (France)
L. Natalucci, INAF - IASF Roma (Italy)
G. Roudil, CESR (France)
P. Bastie, LSP (France)
P. Courtois, ILL (France)
M. Jentschel, ILL (France)
N. V. Abrosimov, IKZ (Germany)
J. Rousselle, CESR (France)

Published in SPIE Proceedings Vol. 10566:
International Conference on Space Optics — ICSO 2008
Josiane Costeraste; Errico Armandillo; Nikos Karafolas, Editor(s)

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