Novel Silicon Photomultipliers for PET Applications

Gabriela Llosa,Roberto Battiston,Maria Giuseppina Bisogni,Maurizio Boscardin,Gianmaria Collazuol,Francesco Corsi,Gian-Franco Dalla Betta,Alberto Del Guerra,Nicoleta Dinu,Giuseppe Levi,Sara Marcatili,Sascha Moehrs,Cristoforo Marzocca,Claudio Piemonte,Alberto Pozza,Cristina Sbarra,Lucio Quadrani

IEEE Transactions on Nuclear Science（2008）

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摘要

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.

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关键词

scintillation counters,breakdown voltage,silicon photomultipliers,lso crystals,scintillators,photoelectron level,photomultipliers,420 to 470 nm,Geiger APD,photodetectors,FWHM,small animal PET tomograph,small animal pet,silicon,pet tomography,positron emission tomography,quantum efficiency,Si,elemental semiconductors,LSO crystals,photodetector,silicon photomultiplier,wavelength 420 nm to 470 nm

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