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

2006/06/05 by O. Mineev, A. Afanasjev, G.B. Bondarenko +19 · 2 citations
Physics and Astronomy · #Neutrino Physics Research #Particle Detector Development and Performance #Radiation Detection and Scintillator Technologies #physics.ins-det

paper · pdf · doi:10.1016/j.nima.2007.04.161

published as Nucl.Instrum.Meth.A577:540-551,2007 · 23 pages, 20 figures, 2 tables

arxiv created 2006/06/05 · openalex publication_date 2007/05/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

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 mm² 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.

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• Optimization of light yield by injecting an optical filler into the co-extruded hole of the plastic scintillation bar
• The T2K Side Muon Range Detector (SMRD)