Elsevier

Physics Procedia

Volume 37, 2012, Pages 1231-1240
Physics Procedia

The Neutrino Near Detector Complex of the T2K Experiment

https://doi.org/10.1016/j.phpro.2012.02.462Get rights and content
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Abstract

The Tokai to Komiaka (T2K) experiment is designed to investigate neutrino oscillations. The Near Detector purposes are to characterize the neutrino beam produced at the J-PARC accelerator complex, and to measure neutrino cross-sections. Super-Kamiokande, the far detector, is located at 2.5 degrees with respect to the J-PARC neutrino beam. The Near Detector is composed of two main sub-detectors: one an on-axis, whose primary purpose is to monitor the beam flux and spatial distribution, and one an off-axis, in the general direction of Super-Kamiokande, that includes tracking and calorimetric capabilities. Excluding the Time Projection Chambers (TPCs), the Near Detector is an assembly of similar building blocks: extruded plastic scintillator, readout by wavelength shifting fibers and Hamamatsu Multi-Pixel Photon Counters. The Near Detector has been in operation since the end of 2009. All the sub-detectors are performing very well providing high quality data about the neutrino beam and interaction processes.

Keywords

Neutrino
Detector
Scintillator
Time Projection Chamber

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