Scintillator counters with multi-pixel avalanche photodiode readout for the ND280 detector of the T2K experiment

Abstract

The Tokai-to-Kamioka (T2K) experiment is a second generation long baseline neutrino oscillation experiment which aims at a sensitive search for the nu_e appearance. The main design features of the T2K near detectors located at 280 m from the target are presented. Scintillator counters developed for the T2K near detectors are described. Readout of the counters is provided via WLS fibers embedded into S-shape grooves in a scintillator and viewed from both ends by multi-pixel avalanche photodiodes operating in a limited Geiger mode. A desription, operational principles and the results of tests of photosensors with a sensitive area of 1.1 mm^2 are presented. A time resolution of 1.5 ns, a spatial resolution of 9.9-12.4 cm, and a MIP detection efficiency of more than 99% were obtained for scintillator detectors in a beam test.

23 pages, 20 figures, 2 tables

References in corpus (5)

• Evidence for muon neutrino oscillation in an accelerator-based experiment
• Improved search for ${\nu }_{\mu }\to {\nu }_e$ oscillation in a long-baseline accelerator experiment
• The K2K SciBar Detector
• Photon sandwich detectors with WLS fiber readout
• Long sandwich modules for photon veto detectors

Cited by in corpus (8)

• The T2K Side Muon Range Detector
• The near neutrino detector for the T2K experiment
• Characterisation of a silicon photomultiplier device for applications in liquid argon based neutrino physics and dark matter searches
• Multi-pixel Geiger-mode avalanche photodiode and wavelength shifting fibre readout of plastic scintillator counters of the EMMA underground experiment
• Scintillator counters with WLS fiber/MPPC readout for the side muon range detector (SMRD)of the T2K experiment
• Scintillator detectors with long WLS fibers and multi-pixel photodiodes
• Optimization of light yield by injection of the optical filler into the co extruded hole of plastic scintillation bar with WLS fiber in it
• Multichannel Data Acquisition System for Scintillation Detectors of the Emma Experiment