The LAUE project for broadband gamma-ray focusing lenses

Virgilli, Enrico; Frontera, F.; Valsan, Vineeth; Liccardo, Vincenzo; Caroli, E.; Stephen, J. B.; Cassese, Francesco Peluso; Recanatesi, L.; Pecora, M.; Mottini, Sergio; Attinà, Primo; Negri, B.

doi:10.1117/12.895236

Cited by 12 publications

(8 citation statements)

References 8 publications

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“…We have already reported on the LAUE project last year 4 . It is the follow-up of an initial development project (HAXTEL), also supported by ASI, that allowed to implement a concept of assembling technique for Laue lenses 5,6 , to significantly shorten the time needed to build a lens.…”

Section: Introductionmentioning

confidence: 99%

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Development status of the LAUE project

et al. 2012

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We present the status of LAUE, a project supported by the Italian Space Agency (ASI), and devoted to develop Laue lenses with long focal length (from 10–15 meters up to 100 meters), for hard X–/soft gamma–ray astronomy (80-600 keV). Thanks to their focusing capability, the design goal is to improve the sensitivity of the current instrumention in the above energy band by 2 orders of magnitude, down to a few times 10−8 photons/(cm2 s keV). © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

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Section: Introductionmentioning

confidence: 99%

“…These reasons led the birth of a new project named LAUE, that was preliminary discussed in Ref. [4]. Now the project is definitive and it can be better described.…”

Section: Introductionmentioning

confidence: 99%

Development status of the LAUE project

et al. 2012

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“…The laue project, 5,6 funded by the Italian Space Agency, is currently running in the larix laboratory of the Physics and Earth Sciences Department of Ferrara University (Italy). The main objective of the project is to develop a technology for building a Laue lens with a broad energy band (70/100-600 keV) and long focal length (20 m), for astrophysics observations.…”

Section: The Laue Project: An Overviewmentioning

confidence: 99%

Hard x-ray broad band Laue lenses (80-600 keV): building methods and performances

et al. 2015

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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.

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“…The correct fixing of the crystal tiles to the lens frame is ensured by gluing them to the frame kept in the same position during the assembling phase. 4 Given this assempling strategy, both the X-ray source and the collimator have to be moved together in order that the beam axis is parallel to the lens axis and all crystal tiles can be properly fixed to lens frame. Such a procedure ensures that each crystal focuses the incident photons in the lens focus, within the equipment uncertanties.…”

Section: The Laue Projectmentioning

confidence: 99%

Characterization of bent crystals for Laue lenses

et al. 2012

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In the context of the LAUE project devoted to build a long focal-length focusing optics for soft γ-ray astronomy (80 -600 keV), we present the results of reflectivity measurements of bent crystals in different configurations, obtained by bending perfect or mosaic flat crystals. We also compare these results with those obtained using flat crystals. The measurements were performed using the Kα line of the Tungsten anode of the X-ray tube used in the LARIX facility of the University of Ferrara.These results are finalized to select the best materials and to optimize the thickness of the crystal tiles that will be used for building a Laue lens petal which is a part of an entire Laue lens, with 20 m focal length and 100-300 keV passband. The final goal of the LAUE project is overcome, by at least 2 orders of magnitude, the sensitivity limits of the current generation of γ-ray telescopes, and to improve the current γ-ray imaging capability.

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The LAUE project for broadband gamma-ray focusing lenses

Cited by 12 publications

References 8 publications

Development status of the LAUE project

Development status of the LAUE project

Hard x-ray broad band Laue lenses (80-600 keV): building methods and performances

Characterization of bent crystals for Laue lenses

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