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

Volume

55

Issue

3

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

877

Lastpage

881

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2008.922812

Filename

4545155