Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..587..821d&link_type=abstract
GAMMA 2001: Gamma-Ray Astrophysics 2001. AIP Conference Proceedings, Volume 587, pp. 821-825 (2001).
Astronomy and Astrophysics
Astrophysics
X- And Gamma-Ray Telescopes And Instrumentation, Spectroscopy And Spectrophotometry, Gamma-Ray Sources, Gamma-Ray Bursts, X-Ray Sources, X-Ray Bursts, Spaceborne And Space Research Instruments, Apparatus, And Components
Scientific paper
IBIS, the imager on board the INTEGRAL satellite, is a coded mask telescope for X and gamma-ray astronomy with imaging and spectroscopy capabilities from 15 keV to 10 MeV. In order to cover this energy range, IBIS uses two position sensitive detectors: the low energy detector layer ISGRI and the high energy detector layer PICsIT. The sensitivity of a coded mask instrument depends on the detectors efficiencies, imaging efficiency, and on the diffuse photons and particles background count-rate. In the IBIS energy range, also the opacity at low energies of the open mask elements and the transparency of the closed elements at high energies give a significant effect on the sensitivities curves. In this work we present a Monte Carlo evaluation of the IBIS detectors efficiencies. The mask transparency data from the Flight Model (FM) are also presented. .
Ciocca C.
de Cesare Giampiero
Del Santo Melania
Di Cocco Guido
Laurent Pascal
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