Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991itns...38..553e&link_type=abstract
(1990 Nuclear Science Symposium, Arlington, VA, Oct. 23-26, 1990, Proceedings. A91-42475 17-35) IEEE Transactions on Nuclear Sci
Astronomy and Astrophysics
Astronomy
Background Radiation, Cosmic Rays, Gamma Ray Spectra, Gamma Ray Telescopes, Cos-B Satellite, External Tanks, Gamma Ray Astronomy, Monte Carlo Method, Protons
Scientific paper
A calculational method of estimating instrumental background in high-energy gamma-ray telescopes, using the hadronic Monte Carlo code FLUKA87, is presented. The method is applied to the SAS-2 and EGRET telescope designs and is also used to explore the level of background to be expected for alternative configurations of the proposed GRITS telescope, which adapts the external fuel tank of a Space Shuttle as a gamma-ray telescope with a very large collecting area. The background produced in proton-beam tests of EGRET is much less than the predicted level. This discrepancy appears to be due to the FLUKA87 inability to transport evaporation nucleons. It is predicted that the background in EGRET will be no more than 4-10 percent of the extragalactic diffuse gamma radiation.
Bertsch David L.
Edwards H. L.
Fichtel Carl E.
Hartman Robert C.
Hughes Barrie E.
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