Photon-induced positron annihilation for standoff bomb detection
We describe an approach to detect improvised explosive devices (IEDs) by using photon-induced positron annihilation radiation (PIPAR). This system relies on back-scattered ? photons from the target and surrounding objects following exposure to high energy X-rays from a betatron. In this work we simu...
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| Format: | Article |
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Elsevier
2010
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| _version_ | 1796855293503602688 |
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| author | Bradley, D. A. Hashim, S. Cabello, J. Wells, K. Dunn, W. L. |
| author_facet | Bradley, D. A. Hashim, S. Cabello, J. Wells, K. Dunn, W. L. |
| author_sort | Bradley, D. A. |
| collection | ePrints |
| description | We describe an approach to detect improvised explosive devices (IEDs) by using photon-induced positron annihilation radiation (PIPAR). This system relies on back-scattered ? photons from the target and surrounding objects following exposure to high energy X-rays from a betatron. In this work we simulate the use of Bremsstrahlung source operating at 3.5 MeV, with a scintillation detector, working in PIPAR mode, in order to reduce noise produced by undesired back-scattering from the surrounding objects. In this paper, we describe the basic imaging method and preliminary results on simulating a suitable betatron source. Two types of X-ray filters copper (Cu) and aluminium (Al), have been used in the simulation to observe their differences in the deposited energy spectrum in the iron target. It was found that the use of iron target in conjunction with 2 mm Al filter is capable of detecting annihilation ? photons. An initiated experiment with an interlaced source also shows promise. |
| first_indexed | 2024-03-05T18:26:29Z |
| format | Article |
| id | utm.eprints-13725 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:26:29Z |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | utm.eprints-137252011-08-12T02:10:41Z http://eprints.utm.my/13725/ Photon-induced positron annihilation for standoff bomb detection Bradley, D. A. Hashim, S. Cabello, J. Wells, K. Dunn, W. L. QC Physics We describe an approach to detect improvised explosive devices (IEDs) by using photon-induced positron annihilation radiation (PIPAR). This system relies on back-scattered ? photons from the target and surrounding objects following exposure to high energy X-rays from a betatron. In this work we simulate the use of Bremsstrahlung source operating at 3.5 MeV, with a scintillation detector, working in PIPAR mode, in order to reduce noise produced by undesired back-scattering from the surrounding objects. In this paper, we describe the basic imaging method and preliminary results on simulating a suitable betatron source. Two types of X-ray filters copper (Cu) and aluminium (Al), have been used in the simulation to observe their differences in the deposited energy spectrum in the iron target. It was found that the use of iron target in conjunction with 2 mm Al filter is capable of detecting annihilation ? photons. An initiated experiment with an interlaced source also shows promise. Elsevier 2010 Article PeerReviewed Bradley, D. A. and Hashim, S. and Cabello, J. and Wells, K. and Dunn, W. L. (2010) Photon-induced positron annihilation for standoff bomb detection. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 619 (1-3). pp. 415-418. ISSN 01689002 http://dx.doi.org/10.1016/j.nima.2009.10.073 doi:10.1016/j.nima.2009.10.073 |
| spellingShingle | QC Physics Bradley, D. A. Hashim, S. Cabello, J. Wells, K. Dunn, W. L. Photon-induced positron annihilation for standoff bomb detection |
| title | Photon-induced positron annihilation for standoff bomb detection |
| title_full | Photon-induced positron annihilation for standoff bomb detection |
| title_fullStr | Photon-induced positron annihilation for standoff bomb detection |
| title_full_unstemmed | Photon-induced positron annihilation for standoff bomb detection |
| title_short | Photon-induced positron annihilation for standoff bomb detection |
| title_sort | photon induced positron annihilation for standoff bomb detection |
| topic | QC Physics |
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