Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-06-11
Proceedings of the 44th Recontres de Moriond on "Very High Energy Phenomena in the Universe", 1st-8th February 2009, La Thuile
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
4 pages, 5 figures, conference 44th Recontres de Moriond on "Very High Energy Phenomena in the Universe", 1st-8th February 200
Scientific paper
GAW (Gamma Air Watch) is a pathfinder experiment in the TeV range to test the feasibility of a new generation of Imaging Atmospheric Cherenkov Telescopes (IACT). It combines high flux sensitivity with large field-of-view (FoV=24deg x 24deg) using Fresnel lenses, stereoscopic observational approach and single-photon counting mode. This particular counting mode, in comparison with the usual charge integration one, allows the triggering of events with a smaller number of collected Cherenkov photons keeping a good signal/background separation. GAW is conceived as an array of three identical imaging telescopes with 2.13 m diameter placed at the vertices of an equilateral triangle of 80 m side. The telescope will be built at the Calar Alto Observatory site (Sierra de Los Filabres - Almeria Spain, 2168 m a.s.l.) and is a joint effort of research institutes in Italy, Portugal and Spain. The main characteristics of the experiment will be reported.
Arruda Luisa
collaboration GAW
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