Title :
Novel Silicon Photomultipliers for PET Applications
Author :
Llosa, Gabriela ; Battiston, Roberto ; Belcari, Nicola ; Boscardin, Maurizio ; Collazuol, Gianmaria ; Corsi, Francesco ; Betta, Gian-Franco Dalla ; Guerra, Alberto Del ; Dinu, Nicoleta ; Levi, Giuseppe ; Marcatili, Sara ; Moehrs, Sascha ; Marzocca, Cristo
Author_Institution :
INFN sezione di Pisa, Pisa
fDate :
6/1/2008 12:00:00 AM
Abstract :
Silicon photomultipliers (SiPMs) with quantum efficiency maximized for a wavelength between 420 and 470 nm have been developed at ITC-irst Trento (Italy), and are being tested for their application in the construction of a ultra high resolution small animal PET tomograph. The devices have an area of 1 mm times 1 mm and 625 microcells. The breakdown voltage is around 30 V, and the gain of the order of 106. The intrinsic timing resolution is 70 ps rms at the single photoelectron level. The first tests as readout for scintillators show an energy resolution of 21% FWHM with Na-22 employing LSO crystals. The first matrices of SiPMs have been produced and are being tested.
Keywords :
elemental semiconductors; photodetectors; photomultipliers; positron emission tomography; silicon; FWHM; LSO crystals; Si; breakdown voltage; photodetectors; photoelectron level; positron emission tomography; scintillators; silicon photomultipliers; small animal PET tomograph; wavelength 420 nm to 470 nm; Animals; Detectors; Energy resolution; Microcell networks; Photodetectors; Photomultipliers; Positron emission tomography; Silicon; Testing; Timing; Geiger APD; photodetector; silicon photomultiplier; small animal pet;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2008.922812
