Design optimization for a wearable, gamma-ray and neutron sensitive, detector array with directionality estimation
| Autor: | Birsen Ayaz-Maierhafer, Jason P. Hayward, Carl G. Britt, Andrew J. August, Carolyn E. Seifert, Hairong Qi |
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| Rok vydání: | 2017 |
| Předmět: |
Coupling
Physics Nuclear and High Energy Physics Physics::Instrumentation and Detectors 010308 nuclear & particles physics business.industry Astrophysics::High Energy Astrophysical Phenomena Detector Gamma ray Constrained optimization Scintillator 01 natural sciences 030218 nuclear medicine & medical imaging 03 medical and health sciences Neutron capture 0302 clinical medicine Optics 0103 physical sciences Neutron detection Neutron business Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 870:131-139 |
| ISSN: | 0168-9002 |
| Popis: | In this study, we report on a constrained optimization and tradeoff study of a hybrid, wearable detector array having directional sensing based upon gamma-ray occlusion. One resulting design uses CLYC detectors while the second feasibility design involves the coupling of gamma-ray-sensitive CsI scintillators and a rubber LiCaAlF 6 (LiCAF) neutron detector. The detector systems’ responses were investigated through simulation as a function of angle in a two-dimensional plane. The expected total counts, peak-to-total ratio, directionality performance, and detection of 40 K for accurate gain stabilization were considered in the optimization. Source directionality estimation was investigated using Bayesian algorithms. Gamma-ray energies of 122 keV, 662 keV, and 1332 keV were considered. The equivalent neutron capture response compared with 3 He was also investigated for both designs. |
| Databáze: | OpenAIRE |
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