1 November 1990 Optimum shields for spaceborne gamma-ray spectrometers
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Abstract
The optimum choice of a shield for space-borne gamma-ray spectrometers is investigated using Monte Carlo simulations. The results demonstrate that, for a given spectrometer configuration, a 'best' shield thickness exists which optimizes the spectrometer's background noise and increases its sensitivity. Such an optimization is achieved by a good understanding of the background sources of the spectrometer, and it varies from detector to detector and orbit to orbit. In general, a highly eccentric orbit is consistently better than LEO with regard to the leakage photon background. BGO seems to be a better shield material than CsI if multiple site events selection is applied.
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Fan Lei, Fan Lei, P. J. Knight, P. J. Knight, Anthony J. Dean, Anthony J. Dean, Philippe Durouchoux, Philippe Durouchoux, Pierre Wallyn, Pierre Wallyn, } "Optimum shields for spaceborne gamma-ray spectrometers", Proc. SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy, (1 November 1990); doi: 10.1117/12.23279; https://doi.org/10.1117/12.23279
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