Subnanosecond timing with large area avalanche photodiodes and LSO scintillator

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.506682· OSTI ID:277657

Moszynski, M; Ludziejewski, T; Wolski, D ^[1]; Klamra, W ^[2]; Szawlowski, M ^[3]; Kapusta, M ^[4]

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1. Soltan Inst. for Nuclear Studies, Swierk-Otwock (Poland)
2. Royal Inst. of Tech., Stockholm (Sweden). Dept. of Physics
3. Advanced Photonix, Inc., Camarillo, CA (United States)
4. 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

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CESIUM 137
COBALT 60
ENERGY RESOLUTION
EXPERIMENTAL DATA
GAMMA DETECTION
INORGANIC PHOSPHORS
SCINTILLATOR-PHOTODIODE DETECTORS
TIMING PROPERTIES