Imaging performance of the Si/Ge hybrid Compton imager

Author

Burks, Morgan ; Chivers, Dan ; Cork, Chris ; Cunningham, Mark ; Fabris, Lorenzo ; Gunter, Donald ; Hull, Ethan ; Lange, David ; Manini, Hugh ; Mihailescu, Lucian ; Nelson, Karl ; Niedermayr, Thomas ; Valentine, John ; Vetter, Kai ; Wright, Doug

Author_Institution

Lawrence Livermore Nat. Lab., Berkeley, CA

Volume

1

fYear

2005

Firstpage

6

Lastpage

10

Abstract

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

Keywords

Compton effect; germanium radiation detectors; imaging; position sensitive particle detectors; silicon radiation detectors; telescopes; Compton back-projection; Doppler broadening; Si/Ge hybrid Compton imager; fully-instrumented silicon/germanium Compton telescope; point spread function; source energy; Detectors; Energy resolution; Germanium; High-resolution imaging; Image resolution; Instruments; Scattering; Silicon; Strips; Telescopes;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2005 IEEE

ISSN

1095-7863

Print_ISBN

0-7803-9221-3

Type

conf

DOI

10.1109/NSSMIC.2005.1596196

Filename

1596196