Subnanosecond timing with large area avalanche photodiodes and LSO scintillator
- Soltan Inst. for Nuclear Studies, Swierk-Otwock (Poland)
- Royal Inst. of Tech., Stockholm (Sweden). Dept. of Physics
- Advanced Photonix, Inc., Camarillo, CA (United States)
- Univ. of Warsaw (Poland). Inst. of Experimental Physics
The detection properties of 10 mm and 16 mm diameter beveled-edge avalanche photodiodes fitted with LSO crystal were measured using {gamma}-sources. Among the properties measured were the electron-hole pair yield, time resolution and energy resolution. These detectors provide excellent time resolution of 570 {+-} 17 ps for {sup 60}Co {gamma}-rays with the energy threshold set at 1 MeV. The energy resolution of the 662 keV {gamma}-peak from a {sup 137}Cs source was measured to be 11% FWHM with a shaping time constant of 0.1 {micro}s. A comparative discussion of the observed time resolution of these large area APDs emphasizes that APD gain, its quantum efficiency, and capacitance are important in timing applications.
- OSTI ID:
- 277657
- Report Number(s):
- CONF-951073--
- Journal Information:
- IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt2 Vol. 43; ISSN 0018-9499; ISSN IETNAE
- Country of Publication:
- United States
- Language:
- English
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