Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..nef.e1007w&link_type=abstract
American Physical Society, Joint Fall 2009 Meeting of the New England Section of the APS and AAPT, October 16-17, 2009, abstract
Physics
Scientific paper
We report on the characterization, modeling, and algorithm development for FNIT -- a Fast Neutron Imaging Telescope. Initially designed to measure solar neutrons in the inner heliosphere, it was later tailored to detect and measure clandestine special nuclear material (SNM) with unique spectral and directional information. To make such measurements, a double scatter telescope is needed. Laboratory testing with a FNIT prototype has been performed in order to characterize such instrumental parameters as time-of-flight, spatial, energy and angular resolutions. Extensive GEANT4 modeling has been performed in an effort to fully characterize the instrument response. These simulations, along with the tests performed with a strong Cf-252 fission neutron source, will allow us to develop efficient, on-line spectral de-convolution and imaging algorithms for a scaled-up, field ready portable neutron telescope. We will present the most recent analysis results.
Bloser Peter
Bravar Ulisse
Legere Jason
Macri John
Mallik Procheta
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