Beam test results of 3D fine-grained scintillator detector prototype for a T2K ND280 neutrino active target

Abstract

An upgrade of the long baseline neutrino experiment T2K near detector ND280 is currently being developed with the goal to reduce systematic uncertainties in the prediction of number of events at the far detector Super-Kamiokande. The upgrade program includes the design and construction of a new highly granular fully active scintillator detector with 3D WLS fiber readout as a neutrino target. The detector of about $200\times 180\times 60c{m}^3$ in size and a mass of $\sim$2.2~tons will be assembled from about $2\times 10^6$ plastic scintillator cubes of $1\times 1\times 1c{m}^3$. Each cube is read out by three orthogonal Kuraray Y11 Wave Length Shifting (WLS) fibers threaded through the detector. A detector prototype made of 125 cubes was assembled and tested in a charged particle test beam at CERN in the fall of 2017. This paper presents the results obtained on the light yield and timing as well as on the optical cross-talk between the cubes.

arXiv comment5 pages, 8 figures

References in corpus (3)

• The T2K Experiment
• First combined analysis of neutrino and antineutrino oscillations at T2K
• A fully active fine grained detector with three readout views

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• Plastic scintillator detector with the readout based on an array of large-area SiPMs for the ND280/T2K upgrade and SHiP experiments
• Introducing a Markov Chain-Based Time Calibration Procedure for Multi-Channel Particle Detectors: Application to the SuperFGD and ToF Detectors of the T2K Experiment
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