Complete characterization of SPADnet-I - a digital 8×16 SiPM array for PET applications

Author

Braga, L.H.C. ; Gasparini, Leonardo ; Grant, Lisa ; Henderson, Robert K. ; Massari, Nicola ; Perenzoni, Matteo ; Stoppa, David ; Walker, Richard

Author_Institution

Smart Opt. Sensors & Interfaces (SOI) Group, Fondazione Bruno Kessler (FBK), Trento, Italy

fYear

2013

fDate

Oct. 27 2013-Nov. 2 2013

Firstpage

1

Lastpage

4

Abstract

This 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 10.8% and a coincidence resolution time of 288 ps are reported.

Keywords

optical sensors; photomultipliers; positron emission tomography; silicon; PET applications; SPADnet-I sensor; Si; crystal discriminator efficiency; crystal image efficiency; digital SiPM array; energy resolution; gamma characterization; positron emission tomography; time 288 ps; Arrays; Crystals; Energy measurement; Energy resolution; Photonics; Positron emission tomography; Real-time systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4799-0533-1

Type

conf

DOI

10.1109/NSSMIC.2013.6829587

Filename

6829587