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26 April 2024 |
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Hard x-ray broad band Laue lenses (80 - 600 keV): building methods and performances | | E. Virgilli
; F. Frontera
; P. Rosati
; V. Liccardo
; S. Squerzanti
; V. Carassiti
; E. Caroli
; N. Auricchio
; J.B. Stephen
; | | Date: |
11 Sep 2015 | | Abstract: | We present the status of the laue project devoted to develop a technology for
building a 20 meter long focal length Laue lens for hard x-/soft gamma-ray
astronomy (80 - 600 keV). The Laue lens is composed of bent crystals of Gallium
Arsenide (GaAs, 220) and Germanium (Ge, 111), and, for the first time, the
focusing property of bent crystals has been exploited for this field of
applications. We show the preliminary results concerning the adhesive employed
to fix the crystal tiles over the lens support, the positioning accuracy
obtained and possible further improvements. The Laue lens petal that will be
completed in a few months has a pass band of 80 - 300 keV and is a fraction of
an entire Laue lens capable of focusing X-rays up to 600 keV, possibly
extendable down to 20 - 30 keV with suitable low absorption crystal materials
and focal length. The final goal is to develop a focusing optics that can
improve the sensitivity over current telescopes in this energy band by 2 orders
of magnitude. | | Source: | arXiv, 1509.3416 | | Services: | Forum | Review | PDF | Favorites | |
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