Title

Calibration of the Fast Neutron Imaging Telescope (FNIT) Prototype Detector

Abstract

The paper describes a novel detector for neutrons in the 1 to 20-MeV energy range with combinedimaging and spectroscopic capabilities. The Fast Neutron Imaging Telescope (FNIT) was designed to detect solar neutrons from spacecraft deployed to the inner heliosphere. However, the potential application of this instrument to Special Nuclear Material (SNM) identification was also examined. In either case, neutron detection relies on double elastic neutron-proton (n-p) scattering in liquid scintillator. We optimized the design of FNIT through a combination of Monte Carlo simulations and lab measurements. We then assembled a scaled-down version of the full detector and assessed its performance by exposing it to a neutron beam and an SNM source. The results from these tests, which were used to characterize the response of the complete FNIT detector to fast neutrons, are presented herein.

Publication Date

10-2009

Journal Title

IEEE Transactions on Nuclear Science

Publisher

IEEE

Digital Object Identifier (DOI)

10.1109/TNS.2009.2028025

Document Type

Article

Rights

© 2009 IEEE