Complete characterization of SPADnet-I - a digital 8×16 SiPM array for PET applications
- Huf Campos Braga, Leo
- Gasparini, Leonardo
- Grant L.
- Henderson R. K.
- Massari, Nicola
- Perenzoni, Matteo
- Stoppa, David
- Walker R.
Publication date
January 2013
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
The paper presents the complete gamma characterization of the SPADnet-I sensor, a novel, fully digital SiPM array for PET applications. Each SPADnet-I pixel contains 720 SPADs and counting and timestamping logic, resulting in pixel dimensions of 0.6 × 0.6 mm2 and 42.6% fill-factor. Moreover, the sensor provides a real-time output of the total detected energy at up to 100 Msamples/s, which is internally used by a discriminator to distinguish gamma events from background noise. Results for the pile-up identification, crystal image and discriminator efficiency are presented. An energy resolution of 10.9% and a coincidence resolution time of 399 ps were obtained
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