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 1mm x 1 mm size and the first SiPM test matrices composed of four (2 x 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.
|Autori:||Llosa; Gabriela; Belcari; Nicola; Bisogni M; Collazuol; Gianmaria; Marcatili; Sara; Moehrs; Sascha; Morsani; Fabio; Piemonte; Claudio; Del Guerra; Alberto|
|Titolo:||Energy and Timing Resolution Studies With Silicon Photomultipliers (SiPMs) and 4-Pixel SiPM Matrices for PET|
|Anno del prodotto:||2009|
|Digital Object Identifier (DOI):||10.1109/TNS.2009.2015877|
|Appare nelle tipologie:||1.1 Articolo in rivista|