Scintillator detectors with long WLS fibers and multi-pixel photodiodes

Details Scintillator detectors with long WLS fibers and multi-pixel photodiodes Scintillator detectors with long WLS fibers and multi-pixel photodiodes

2011-10-12

arxiv.org/abs/1110.2651v1

Physics

Instrumentation and Detectors

Scientific paper

We have studied the possibility of using Geiger mode multi-pixel photodiodes to read out long scintillator bars with a single wavelength-shifting fiber embedded along the bar. This detector configuration can be used in large volume detectors in future long baseline neutrino oscillation experiments. Prototype bars of 0.7 cm thickness and different widths have been produced and tested using two types of multi-pixel photodiodes: MRS APD (CPTA, Moscow) and MPPC (Hamamatsu). A minimum light yield of 7.2 p.e./MeV was obtained for a 4 cm wide bar.

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