Imaging performance of the Si/Ge hybrid Compton imager

The point spread function (PSF) of a fully-instrumented silicon/germanium Compton telescope has been measured as a function of energy and angle. Overall, the resolution was 3deg to 4deg FWHM over most of the energy range and field of view. The various contributions to the resolution have been quanti...

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Bibliographic Details
Main Authors: Burks, M., Chivers, D., Cork, C., Cunningham, M., Fabris, L., Gunter, D., Hull, E., Lange, D., Manini, H., Mihailescu, L., Nelson, K., Niedermayr, T., Valentine, J., Vetter, K., Wright, D.
Format: Conference Proceeding
Language:English
Subjects:
Detectors
Energy resolution
Germanium
High-resolution imaging
Image resolution
Instruments
Scattering
Silicon
Strips
Telescopes
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Summary:The point spread function (PSF) of a fully-instrumented silicon/germanium Compton telescope has been measured as a function of energy and angle. Overall, the resolution was 3deg to 4deg FWHM over most of the energy range and field of view. The various contributions to the resolution have been quantified. These contributions include the energy and position uncertainty of the detector; source energy; Doppler broadening; and the 1/r broadening characteristic of Compton back-projection. Furthermore, a distortion of the PSF is observed for sources imaged off-axis from the detector. These contributions are discussed and compared to theory and simulations
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2005.1596196