Title :
Timing properties of LuAP:Ce studied with large area avalanche photodiodes
Author :
Balcerzyk, M. ; Moszynski, M. ; Kapusta, M. ; Szawlowski, M.
Author_Institution :
Soltan Inst. for Nucl. Studies, Swierk-Otwock, Poland
Abstract :
Prompted by recent interest in PET scanners equipped with LuAP:Ce (LuAlO3:Ce) scintillators read by avalanche photodiodes we have measured timing properties of this scintillating material with Large Area Avalanche Photodiodes (LAAPD) from Advanced Photonix Inc. (API). We have obtained time resolution of 1.16±0.06 ns for 511 keV peak from a (22)Na source with energy threshold set at 400 keV, and 580±35 ps for 60Co source with energy threshold set at 1 MeV. The dependence of time resolution on LAAPD gain was measured showing improved timing at gains over 200, but at the cost of higher excess noise. Comparing time resolution of LuAP:Ce and LSO:Ce measured with LAAPD and photomultipliers we discuss the dependence of timing properties on light output and decay time of these scintillators
Keywords :
avalanche photodiodes; cerium; lutetium compounds; solid scintillation detectors; 60Co source; LuAlO3:Ce; LuAlO3:Ce scintillators; large area avalanche photodiodes; photomultipliers; scintillating material; time resolution; timing properties; Area measurement; Avalanche photodiodes; Costs; Energy resolution; Gain measurement; Noise measurement; Photomultipliers; Positron emission tomography; Time measurement; Timing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949154
