Design of the explosion-proof detection integrated system based on PGNAA technology
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In the present study, the explosion-proof detection integrated system (EPDS) is designed for social security. With the D-T neutron generator and BGO detector as the core components, the hardware modules in EPDS are optimized based on SNR evaluation in MCNP simulation. With the 50 MPa load on the internal surface in ANSYS software, the small deformation of wall (6.0354 mm) shows the good explosion-proof performance of EPDS. Furthermore, 6 kinds of explosives with 5 ordinary goods are measured, and the results shows the good resolution capability based on the element ratio method. Finally, with the investigation of detection results under different time gradient, the minimum detection time is discussed as 600 s.
KeywordsExplosion-proof PGNAA System optimization Signal-to-noise ratio (SNR) Explosive detection
This work was a project funded by National Natural Science Foundation of China (Grant Nos. 11505097 and 11775113), the National Key Research and Development Program of China (Grant No. 2017YFF0104200), Nanjing University of Aeronautics and Astronautics Ph.D. short-term visiting scholar project (Grant No. 190607DF06), the Fundamental Research Funds for the Nanjing University of Aeronautics and Astronautics (kfjj20180607) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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