Explicit modeling of timing characteristics in Compton camera simulation with Geant4

In the present study, a Compton camera, including detailed timing characteristics of the component detectors and related data acquisition (DAQ) electronics, was modeled very accurately with Geant4. The results are very convincing—the inclusion of the timing characteristics in the simulation reduced...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2011-05, Vol.633, p.S274-S275
Main Authors: Hyung Park, Jin, Seo, Hee, Hyeong Kim, Chan, Hahn Lee, Ju, Sik Lee, Chun, Sung Lee, Jae
Format: Article
Language:English
Subjects:
Compton camera
Geant4
Monte Carlo
Timing characteristics
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Summary:In the present study, a Compton camera, including detailed timing characteristics of the component detectors and related data acquisition (DAQ) electronics, was modeled very accurately with Geant4. The results are very convincing—the inclusion of the timing characteristics in the simulation reduced the imaging sensitivity discrepancy between the simulated and measured data to a negligible level (1–2%) for a 22Na point source; this is a significant accuracy improvement compared with the results obtained previously without modeling the timing characteristics, for which the discrepancies were 30% and 6% for 511 and 1275 keV, respectively. The imaging resolution accuracy was also significantly improved.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2010.06.186