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Persistent URL http://purl.org/net/epubs/work/52957
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Record Id 52957
Title Influence of dark count on the performance of silicon photomultipliers
Abstract The introduction of Silicon Photomultipliers (SiPMs) as single photon sensitive detectors represents a promising alternative to traditional photomultiplier tubes. This is especially true in applications in which it is compulsory to attain magnetic field insensitivity, low photon flux detection, quantum efficiency in the blue region that is comparable to standard photomultipliers, high timing resolution, dimensions comparable to the dimensions of an optical fiber diameters, and low costs. The structure of the SiPM is based on an array of independent Avalanche Photodiodes (APDs) working in Geiger-mode at a low bias voltage with a high gain. The output signal is proportional to the number of pixels "fired" by impacting photons. The detection efficiency for state-of-the-art devices is in the order of 20% at 500 nm. In this contribution, the measured dark count rates of different SiPMs are compared and the signal shape and statistical spectrum of this noise analyzed. A characterization of the effects on the noise of the bias voltage is performed as part of the study to determine the optimized working parameters for a future beam loss monitor at CTF3/CLIC.
Organisation CI , STFC
Keywords Physics
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Language English (EN)
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Paper In Conference Proceedings In Beam Instrumentation Workshop (BIW10), Santa Fe, NM, USA, (2010). Cockcroft-10-08.pdf 2010