1. Energy and Timing Resolution Studies With Silicon Photomultipliers (SiPMs) and 4-Pixel SiPM Matrices for PET.
- Author
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Llosá, Gabriela, Belcari, Nicola, Bisogni, Maria Giuseppina, Collazuol, Gianmaria, Marcatili, Sara, Moehrs, Sascha, Morsani, Fabio, Piemonte, Claudio, and del Guerra, Alberto
- Subjects
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DETECTORS , *SILICON , *PHOTOMULTIPLIERS , *OPTOELECTRONIC devices , *OPTICAL instruments , *PHYSICS instruments - Abstract
A high performance detector head with matrices of silicon photomultipliers (SiPMs) as photodetectors is under development at the University of Pisa and INFN Pisa. The silicon photomultipliers fabricated at FBK-irst (Trento, Italy) are being evaluated for this purpose. Single SiPM detectors of 1 mm × 1 mm size and the first SiPM test matrices composed of four (2 × 2) pixel elements in a common substrate have been tested with LYSO crystals. The energy and timing resolution of single SiPMs have been evaluated, obtaining an energy resolution of 20% FWHM at 511 keV, and a coincidence timing resolution of 1.4 ns FWHM. In addition, the first tests performed with the SiPM matrices prove the feasibility of such devices. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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