Author/Authors :
Campisi، نويسنده , , A. and Cosentino، نويسنده , , L. and Finocchiaro، نويسنده , , P. and Pappalardo، نويسنده , , Sabina A. and Musumeci، نويسنده , , F. and Privitera، نويسنده , , S. and Scordino، نويسنده , , A. and Tudisco، نويسنده , , S. and Fallica، نويسنده , , G. and Sanfilippo، نويسنده , , D. and Mazzillo، نويسنده , , M. and Condorelli، نويسنده , , G. Di Piazza، نويسنده , , A. and Valvo، نويسنده , , G. and Lombardo، نويسنده , , S. and Sciacca، نويسنده , , E. and Bonanno، نويسنده , , G. and Belluso، نويسنده , , M.، نويسنده ,
Abstract :
Arrays of Single Photon Avalanche Detectors (SPAD) are considered today as a possible alternative to PMTs and other semiconductor devices in several applications, like physics research, bioluminescence, Positron Emission Tomography (PET) systems, etc. We have developed and characterized a first prototype array produced by STMicroelectronics in silicon planar technology and working at low voltage (30−40 V) in Geiger mode operation. The single cell structure (size down to 20 μm) and the geometrical arrangement give rise to appealing intrinsic characteristics of the device, such as photon detection efficiency, dark count map, cross-talk effects, timing and energy resolution. New prototypes are under construction with a higher number of pixels that have a common output signal to obtain a so-called SiPM (Silicon PhotoMultiplier) configuration.
Keywords :
PET , Geiger mode operation , Silicon PhotoMultiplier , Photon counting , Avalanche photodiodes , Optical trench
