Directionality in the GammaTracker Handheld Radioisotope Identifier
Several computationally simple methods are presented for determining the direction to one or more radiation sources using the GammaTracker handheld radioisotope identifier. GammaTracker will display a heading indicating the direction to one or more sources; no gamma-ray images will be shown to the u...
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| Veröffentlicht in: | IEEE transactions on nuclear science 2009-06, Vol.56 (3), p.1351-1355 |
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| container_title | IEEE transactions on nuclear science |
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| creator | Seifert, C.E. Myjak, M.J. |
| description | Several computationally simple methods are presented for determining the direction to one or more radiation sources using the GammaTracker handheld radioisotope identifier. GammaTracker will display a heading indicating the direction to one or more sources; no gamma-ray images will be shown to the user. The details of each directionality method are presented and performance is compared using radiation transport simulations of gamma-ray point sources at varying activity levels on a natural background. All methods achieved sufficiently high pointing accuracy and precision in the tested scenarios, which included background-to-source ratios up to 10:1. The prospects for implementation in the GammaTracker firmware architecture are discussed. |
| doi_str_mv | 10.1109/TNS.2009.2020598 |
| format | Article |
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(PNNL), Richland, WA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Directionality in the GammaTracker Handheld Radioisotope Identifier</atitle><jtitle>IEEE transactions on nuclear science</jtitle><stitle>TNS</stitle><date>2009-06-01</date><risdate>2009</risdate><volume>56</volume><issue>3</issue><spage>1351</spage><epage>1355</epage><pages>1351-1355</pages><issn>0018-9499</issn><eissn>1558-1578</eissn><coden>IETNAE</coden><abstract>Several computationally simple methods are presented for determining the direction to one or more radiation sources using the GammaTracker handheld radioisotope identifier. GammaTracker will display a heading indicating the direction to one or more sources; no gamma-ray images will be shown to the user. The details of each directionality method are presented and performance is compared using radiation transport simulations of gamma-ray point sources at varying activity levels on a natural background. All methods achieved sufficiently high pointing accuracy and precision in the tested scenarios, which included background-to-source ratios up to 10:1. The prospects for implementation in the GammaTracker firmware architecture are discussed.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TNS.2009.2020598</doi><tpages>5</tpages></addata></record> |
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| source | IEEE Electronic Library (IEL) |
| subjects | ACCURACY Background radiation Computation Computer simulation Directional detectors Energy resolution Field programmable gate arrays Firmware GAMMA DETECTION Gamma ray detection Gamma ray detectors Gamma rays gamma-ray imaging gamma-ray spectroscopy gamma-ray spectroscopy detectors Handheld computers High-resolution imaging INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Instruments nuclear imaging pixel detectors POINT SOURCES PORTABLE EQUIPMENT POSITIONING RADIATION DETECTORS Radiation sources Radiation transport Radioactive materials Radioisotopes Spectroscopy |
| title | Directionality in the GammaTracker Handheld Radioisotope Identifier |
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