Development status of a Laue lens project for gamma-ray astronomy - art. no. 66880N

Proceedings of SPIE - The International Society for Optical Engineering (Impact Factor: 0.2). 12/2007; 6688. DOI: 10.1117/12.736038
Source: arXiv


We report the status of the HAXTEL project, devoted to perform a design study and the development of a Laue lens prototype. After a summary of the major results of the design study, the approach adopted to develop a Demonstration Model of a Laue lens is discussed, the set up described, and some results presented. Comment: 11 pages, 11 figures, 2007 SPIE Conference on Optics for EUV, X-Ray, and Gamma-Ray Astronomy III

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Available from: Vittore Carassiti, Nov 06, 2012
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    ABSTRACT: The future of the soft gamma--ray astronomy (>100 keV) is connected with the development of focusing instruments. Laue lenses are the best candidate instruments. We propose a balloon experiment in order to test for the first time a new concept of focusing gamma-ray telescope that makes use of Laue lenses made of mosaic crystals in transmission configuration, now developed in our institutes. We discuss here the features and requirements of this balloon experiment. In 10000 s of observing time per each source at 3 mbars we expect to reach the sufficient sensitivity to demonstrate the spectral and imaging capabilities of the lens we propose to test.
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    ABSTRACT: We report on the first results obtained from our development project of focusing gamma-rays ($>$60 keV) by using Laue lenses. The first lens prototype model has been assembled and tested. We describe the technique adopted and the lens focusing capabilities at about 100 keV. Comment: 8 pages 9 figures, to be published in SPIE Procs. 7011, 2008
    Proceedings of SPIE - The International Society for Optical Engineering 07/2008; 7011. DOI:10.1117/12.790484 · 0.20 Impact Factor
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    ABSTRACT: Observations of the gamma-ray sky reveal the most powerful sources and the most violent events in the Universe. While at lower wavebands the observed emission is generally dominated by thermal processes, the gamma-ray sky provides us with a view on the non-thermal Universe. Here particles are accelerated to extreme relativistic energies by mechanisms which are still poorly understood, and nuclear reactions are synthesizing the basic constituents of our world. Cosmic accelerators and cosmic explosions are major science themes that are addressed in the gamma-ray regime. While Fermi will take the next step in surveying the high-energy (~GeV) sky, and NuSTAR will pioneer focusing observations at hard X-ray energies (to ~80 keV), there is currently no successor mission planned to ESA's INTEGRAL observatory which currently provides important new insights into the MeV sky, albeit at much more modest sensitivities. There will be clearly a growing need to perform deeper, more focused investigations of gamma-ray sources in the 100-keV to MeV regime. Recent technological advances in the domain of gamma-ray focusing using Laue diffraction and multilayer-coated mirror techniques have paved the way towards a gamma-ray mission, providing major improvements compared to past missions regarding sensitivity and angular resolution. Such a future Gamma-Ray Imager will allow the study of particle acceleration processes and explosion physics in unprecedented detail, providing essential clues on the innermost nature of the most violent and most energetic processes in the Universe.
    IEEE Transactions on Nuclear Science 07/2009; 56(3-56):1242 - 1249. DOI:10.1109/TNS.2009.2013855 · 1.28 Impact Factor
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