1-D Fast Neutron Source Localization Using Digital Pixelated 3-D Position-Sensitive CdZnTe Detectors

Recoil of constituent nuclei from neutron elastic scatter in pixelated, 3-D CdZnTe gamma-ray detectors is detectable given current low energy thresholds. Fast neutrons are attenuated by CdZnTe detectors via outscatter and measured gradients in neutron interaction rates across detector pixels that en...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2017-09, Vol.64 (9), p.2531-2535
Main Authors: Goodman, David, Streicher, Michael, Yuefeng Zhu, Brown, Steven, Zhong He
Format: Article
Language:English
Subjects:
3-D CdZnTe
Attenuation
Cadmium zinc tellurides
Crystals
Detectors
Deuterium
digital ASIC
Elastic scattering
fast neutron detection
fast neutron localization
Fast neutrons
Field of view
Gamma ray detectors
Gamma rays
Generators
Localization
Maximum likelihood estimators
Neutrons
Nuclei
Nuclei (nuclear physics)
Position (location)
Recoil
Sensitivity
Sensors
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Description
Summary:Recoil of constituent nuclei from neutron elastic scatter in pixelated, 3-D CdZnTe gamma-ray detectors is detectable given current low energy thresholds. Fast neutrons are attenuated by CdZnTe detectors via outscatter and measured gradients in neutron interaction rates across detector pixels that enables 1-D fast neutron source localization through a maximum likelihood estimator. Experimental results using an MP320 deuterium-deuterium neutron generator with the four detector crystal Orion prototype successfully localize four different source locations across a 1-D field of view to within absolute measurement errors between 2.5° and 14.0°.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2017.2729942