4.3 Article

Scintillator detectors with long WLS fibers and multi-pixel photodiodes

Journal

JOURNAL OF INSTRUMENTATION
Volume 6, Issue -, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/6/12/P12004

Keywords

Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators); Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc); Particle tracking detectors

Funding

  1. Russian Academy of Sciences
  2. RFBR (Russia)/JSPS (Japan) [11-02-92106]
  3. Science School [65038.2010.2]

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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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