Application of Geiger-mode photo sensors in Cherenkov detectors

Details Application of Geiger-mode photo sensors in Cherenkov detectors Application of Geiger-mode photo sensors in Cherenkov detectors

2010-08-31

arxiv.org/abs/1008.5266v1

Physics

Instrumentation and Detectors

Scientific paper

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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