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Evaluation of a Compton scattering camera using 3D position-sensitive CdZnTe detectors
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1999
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EngineeringCzt Compton CameraAccelerator PhysicImage SensorCompton Scattering CameraIntrinsic EfficiencyCalibrationDetector EnergyComputational ImagingInstrumentationRadiation ImagingRadiologyHealth SciencesAccelerator TechnologyTime-of-flight CameraRadiation DetectionPosition-sensitive Cdznte DetectorsRange ImagingSynchrotron RadiationSpectroscopyDetector Physic
A CZT Compton Camera (CCC) is being built using two 3D position sensitive CZT detectors. Expected system performance was analyzed by analytical and Monte Carlo approaches. Based on the measurement of detector energy and position resolution, the expected angular resolution is approximately 3 degree and approximately 2 degrees for a +/- 30 degrees FOV for 511 keV and 1 MeV (gamma) -rays, respectively. The intrinsic efficiency for a point source 10 cm from the first detector surface ranges from 1.5 X 10<SUP>-4</SUP> to 8.8 X 10<SUP>-6</SUP> for 500 keV to 3 MeV.