Performance Evaluation of an Imaging Radiation Portal Monitor System
Abstract
:1. Introduction
2. Materials and Methods
2.1. Detection System
2.2. NGET Method
3. RPM Detection Performance Results
3.1. Background Evaluation
3.2. False Alarm Rate Tests
3.3. Radiation Source Tests
3.3.1.
3.3.2. Ba and Cs
4. 3D Localization of SNM
5. Discussion
6. Patents
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Counts/s | |
---|---|
Single -rays | 5189.0 ± 0.2 |
Single neutrons | 1.000 ± 0.002 |
–neutron coinc. | 0.0030 ± 0.0002 |
– coinc. | 63.00 ± 0.02 |
Neutron-neutron coinc. | 0.0021 ± 0.0001 |
Detection Mode | Threshold (Counts/s) | Threshold () |
---|---|---|
Single -rays | 5477 | 4 |
Single neutrons | 5 | 4 |
-neutron coinc. | 1 | 18 |
- coinc. | 95 | 4 |
Neutron-neutron coinc. | 1 | 21 |
Source Type | Neutrons/s | Single Neutrons | -Neutron Coinc. | Neutron- Neutron Coinc. |
---|---|---|---|---|
lab source | 5400 | 30/ | 38/0.13 | 4/0.84 |
ANSI N42.35-2016 | 20,000 | 112/ | 140/ | 14/0.53 |
Source Type | Activity (kBq) | Sigma Multiplier Factor N | Probability of False Negative |
---|---|---|---|
Ba lab source | 44 | 8 | 3 |
Ba ANSI N42.35-2016 | 518 | 865 | 0 |
Cs lab source | 184 | 28 | 0 |
Cs ANSI N42.35-2016 | 592 | 249 | 0 |
bare Cf | 2.09 ± 0.04 | 2.16 ± 0.04 | 2.89 ± 0.05 |
Cf + PE1000 | 3.20 ± 0.07 | 2.65 ± 0.05 | 3.97 ± 0.08 |
Cf + lead | 4.8 ± 0.2 | 4.76 ± 0.09 | 6.2 ± 0.2 |
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Vasiljević, J.; Cederwall, B. Performance Evaluation of an Imaging Radiation Portal Monitor System. Appl. Sci. 2022, 12, 9001. https://doi.org/10.3390/app12189001
Vasiljević J, Cederwall B. Performance Evaluation of an Imaging Radiation Portal Monitor System. Applied Sciences. 2022; 12(18):9001. https://doi.org/10.3390/app12189001
Chicago/Turabian StyleVasiljević, Jana, and Bo Cederwall. 2022. "Performance Evaluation of an Imaging Radiation Portal Monitor System" Applied Sciences 12, no. 18: 9001. https://doi.org/10.3390/app12189001
APA StyleVasiljević, J., & Cederwall, B. (2022). Performance Evaluation of an Imaging Radiation Portal Monitor System. Applied Sciences, 12(18), 9001. https://doi.org/10.3390/app12189001