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Development of large-area silicon photomultiplier detectors for PET applications at FBK

โœ Scribed by Nicola Zorzi; Mirko Melchiorri; Alessandro Piazza; Claudio Piemonte; Alessandro Tarolli

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
649 KB
Volume
636
Category
Article
ISSN
0168-9002

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โœฆ Synopsis

This paper reports on the development of large-area silicon photomultiplier (SiPM) detectors specifically designed for positron emission tomography (PET) instruments. The sensors under study are monolithic arrays of two different types: a 2 ร‚ 2 array of $ 4 ร‚ 4 mm 2 elements and an 8 ร‚ 8 array of 1.5 ร‚ 1.5 mm 2 pixels. These devices are characterized at wafer level by means of an automatic test procedure, consisting of current-voltage curves in forward and reverse bias. The tests allowed selection of functioning devices and evaluation of the uniformity of basic parameters. Results of the electrical characterization are reported showing that acceptable values of yield together with rather uniform distribution of parameters have been obtained. Reliability of produced SiPMs has been proved by longterm accelerated stress tests.

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โœ G. Ambrosi; P. Azzarello; R. Battiston; G. Di Lorenzo; M. Ionica; G.U. Pignatel; ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 388 KB

In time-of-flight measurements, or positron emission tomography experiments where two gamma rays are detected in coincidence, the time resolution of the photodetector is of primary importance. SiPMs are very promising devices for these applications, since their intrinsic response time can be less th