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Application of Geiger-mode photo sensors in Cherenkov detectors

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arxiv 1008.5266 v1 pith:CY4GJG6Z submitted 2010-08-31 physics.ins-det nucl-ex

Application of Geiger-mode photo sensors in Cherenkov detectors

classification physics.ins-det nucl-ex
keywords detectorssensorscherenkovgeiger-modemppcsipmsworkingactive
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Silicon-based photosensors (SiPMs) working in the Geiger-mode represent an elegant solution for the readout of particle detectors working at low-light levels like Cherenkov detectors. Especially the insensitivity to magnetic fields makes this kind of sensors suitable for modern detector systems in subatomic physics which are usually employing magnets for momentum resolution. In our institute we are characterizing SiPMs of different manufacturers for selecting sensors and finding optimum operating conditions for given applications. Recently we designed and built a light concentrator prototype with 8x8 cells to increase the active photon detection area of an 8x8 SiPM (Hamamatsu MPPC S10931-100P) array. Monte Carlo studies, measurements of the collection efficiency, and tests with the MPPC were carried out. The status of these developments are presented.

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