Spatial response characterization of He-4 scintillation detectors

Ryan P. Kelley; Noah Steinberg; David Murer; Heather Ray; Kelly A. Jordan

doi:10.1117/12.2188121

27 August 2015 Spatial response characterization of He-4 scintillation detectors

Ryan P. Kelley, Noah Steinberg, David Murer, Heather Ray, Kelly A. Jordan

Proceedings Volume 9595, Radiation Detectors: Systems and Applications XVI; 95950G (2015) https://doi.org/10.1117/12.2188121
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The spatial response of pressurized helium-4 fast neutron scintillation detectors is characterized using collimated neutron source measurements and MCNPX-PoliMi simulations. A method for localizing the position of each detected event is also demonstrated using the two-sided photomultiplier readout. Results show that the position of particle interaction along the axis of the active volume has a measurable effect on the scintillation light response of the detector. An algorithm is presented that uses the probability distribution of relative interaction positions to perform source localization, further demonstrating the applicability of these detectors as tools for the detector of hidden shielded nuclear material.

Citation Download Citation

Ryan P. Kelley, Noah Steinberg, David Murer, Heather Ray, and Kelly A. Jordan "Spatial response characterization of He-4 scintillation detectors", Proc. SPIE 9595, Radiation Detectors: Systems and Applications XVI, 95950G (27 August 2015); https://doi.org/10.1117/12.2188121

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