Xian GUAN, Xing WEI, Zikun LI, Haijun FAN, Jipeng ZHANG, Tao SUN. Fast localization of radiation sources based on Support Vector Machine[J]. NUCLEAR TECHNIQUES, 2023, 46(9): 090202
- NUCLEAR TECHNIQUES
- Vol. 46, Issue 9, 090202 (2023)
Fig. 1. Structure diagram of array NaI (Tl) detector device for radiation source location
Fig. 2. Diagram of Monte Caro simulation model with parallel beam γ-ray
Fig. 3. Collision distribution of particles in array detector (a) θ = 60°，(b) θ = 210°
Fig. 4. Distribution curves of MC simulation gross counts with γ-ray incidence angles
Fig. 5. Physical photos of array NaI(Tl) detector radiation source location device (a) Array NaI(Tl) detector, (b) Array rotation platform
Fig. 6. Physical diagram of linear orbits (a) Orbits, (b) Radioactive source bracket platform
Fig. 7. Diagram of radioactive angle response experiment
Fig. 8. Experiment results of radioactive angle response
Fig. 9. Proportions of gross count from energy spectra of radioactive angle response experiment
Fig. 10. Diagram of radioactive location response experiment
Fig. 11. Results of location response experiment (a) S=1 m, (b) S=2 m, (c) S=3 m, (d) S=4 m, (e) S=5 m
Fig. 12. Predicted mean angle deviation of location response experiment
Fig. 13. Results of relative height response experiment(a) Relative height 0.3 m, (b) Relative height 0.4 m, (c) Relative height 0.5 m, (d) Relative height 0.6 m
Fig. 14. Predicted mean angle deviation of relative height response experiment
Fig. 15. Predicted mean angle deviation with various energy γ-ray
Fig. 16. Varition of mean localization deviation with the primary γ-ray intensity
Fig. 17. Minimum localizable intensity of radiation source
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Table 1. Angle predictions of MC simulation radioactive source
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Table 2. Prediction of angle response experiment results
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Table 3. Results of relative height response experiment
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