In this paper, we present a novel SiPM technology, developed at FBK, characterized by small cells with very high fill factor, called RGB-HD (red-green-blue high-density SiPM). The first prototypes feature a cell size of 15x15 μm2 and 30x30 μm2 with nominal fill factors of 48 % and 75 %, respectively. Here we focus on the 30 μm cell size, which was used to produce a 4x4mm2 SiPM. We coupled different samples to both LYSO and GAGG scintillators, with sizes of 3x3x5 mm3 and 4x4x22 mm3, in order to characterize the RGB-HD SiPM performance for TOF-PET application. The results are extremely promising. We measured energy resolution of 9 % and coincidence resolving time of 170 ps FWHM with thick LYSO while 7 % and 375 ps FWHM with thick GAGG.
Performance of a novel, small-cell, high-fill-factor SiPM for TOF-PET
Piemonte, Claudio;Ferri, Alessandro;Gola, Alberto Giacomo;Serra, Nicola;Tarolli, Alessandro;Zorzi, Nicola
2013-01-01
Abstract
In this paper, we present a novel SiPM technology, developed at FBK, characterized by small cells with very high fill factor, called RGB-HD (red-green-blue high-density SiPM). The first prototypes feature a cell size of 15x15 μm2 and 30x30 μm2 with nominal fill factors of 48 % and 75 %, respectively. Here we focus on the 30 μm cell size, which was used to produce a 4x4mm2 SiPM. We coupled different samples to both LYSO and GAGG scintillators, with sizes of 3x3x5 mm3 and 4x4x22 mm3, in order to characterize the RGB-HD SiPM performance for TOF-PET application. The results are extremely promising. We measured energy resolution of 9 % and coincidence resolving time of 170 ps FWHM with thick LYSO while 7 % and 375 ps FWHM with thick GAGG.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
