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We present the design and performances of a radiation detector based on plastic scintillating fibers with doubleside readout by means of large-area Single Photon Avalanche Diodes (SPAD). This can be the basic step toward the realization of a large-area, cost-effective position sensitive detector to be employed in future space gammaray observatories. SPADs are silicon devices operated above the junction breakdown voltage (with the typical overvoltage of 5V), for which a single photon interacting in the active region is sufficient to trigger a selfsustainable avalanche discharge. SPADs can thus be used for the detection of very low light levels with a fast time response around 50ps FWHM for single photon detection, without spectroscopic capabilities. Large-area SPAD (500 μm in diameter) have been designed and fabricated at the CNR-IMM facility, with an intrinsic noise lower than 10kHz at -15°C, and are optically …
International Society for Optics and Photonics
Publication date: 
25 Sep 2012

Martino Marisaldi, Alessandro Berra, Francesco Moscatelli, Piera Maccagnani, Claudio Labanti, Fabio Fuschino, Michela Prest, Davide Bolognini, Massimo Ghioni, Ivan Rech, Angelo Gulinatti, Andrea Giudice, Georg Simmerle, Danielo Rubini

Biblio References: 
Volume: 8443 Pages: 84430M
Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray