CLAIRE - towards the first light for a gamma-ray lens

Details CLAIRE - towards the first light for a gamma-ray lens CLAIRE - towards the first light for a gamma-ray lens

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000nimpa.442..438l&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 442, Issue 1-3, p. 438-442.

Physics

5

Scientific paper

The CLAIRE collaboration is presently preparing the first astronomical observation of a gamma-ray lens. In June 2000, the instrument is to be flown on a stratospheric balloon by the French Space Agency CNES. CLAIRE features a Laue diffraction lens, a detector module with a /3×3 germanium array, and a balloon gondola stabilized to /15'' pointing accuracy. The instruments lens focuses gamma-ray photons from its 526cm2 area onto a small solid-state detector, with only 18cm3 equivalent volume for background noise. Hence, for the first time in gamma-ray astronomy, the statistics will be dominated by the signal. Besides its excellent sensitivity, the telescope has outstanding angular and spectral resolution. The primary objective for the first balloon flight of CLAIRE is to detect the Crab nebula and measure its extend at 170 keV with an angular resolution of about 1 arcmin. Scientific objectives for further flights include collapsed objects, SNRs, and broad class annihilators.

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