Simulated Performance of Algorithms for the Localization of Radioactive Sources from a Position Sensitive Radiation Detecting System (COCAE)

Journal Article · Tue Dec 13 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3665338· OSTI ID:22003939

Karafasoulis, K ^[1]; Hellenic Army Academy, 16673 Vari ^[2]; Zachariadou, K ^[1]; Seferlis, S; Kaissas, I; Potiriadis, C ^[1]; Lambropoulos, C ^[3]; Loukas, D ^[4]

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1. Greek Atomic Energy Commission, Patriarxou Grigoriou and Neapoleos, 15310, Athens (Greece)
2. Greece
3. Technological Educational Institute of Chalkida, Psachna Evias, 34400 Greece (Greece)
4. Institute of Nuclear Physics, National Center for Scientific Research Demokritos 15310, Athens (Greece)

Simulation studies are presented regarding the performance of algorithms that localize point-like radioactive sources detected by a position sensitive portable radiation instrument (COCAE). The source direction is estimated by using the List Mode Maximum Likelihood Expectation Maximization (LM-ML-EM) imaging algorithm. Furthermore, the source-to-detector distance is evaluated by three different algorithms based on the photo-peak count information of each detecting layer, the quality of the reconstructed source image, and the triangulation method. These algorithms have been tested on a large number of simulated photons over a wide energy range (from 200 keV to 2 MeV) emitted by point-like radioactive sources located at different orientations and source-to-detector distances.

• OSTI ID: 22003939
• Journal Information: AIP Conference Proceedings, Vol. 1412, Issue 1; Conference: 11. international conference on applications of nuclear techniques, Crete (Greece), 12-18 Jun 2011; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALGORITHMS
COMPUTERIZED SIMULATION
GAMMA DETECTION
GAMMA RADIATION
IMAGE PROCESSING
IMAGES
INFORMATION
KEV RANGE
MAXIMUM-LIKELIHOOD FIT
MEV RANGE
ORIENTATION
PERFORMANCE
PHOTONS
POSITION SENSITIVE DETECTORS
RADIATION SOURCES