The T2K Side Muon Range Detector
S. Aoki, G. Barr, M. Batkiewicz, J. B{\l}ocki, J. D. Brinson, W., Coleman, A. Da{\iota}browska, I. Danko, M. Dziewiecki, B. Ellison, L., Golyshkin, R. Gould, T. Hara, J. Haremza, B. Hartfiel, J. Holeczek, A., Izmaylov, M. Khabibullin, A. Khotjantsev, D. Kie{\l}czewska
TL;DR
This paper details the design, components, and performance of the Side Muon Range Detector (SMRD), a key part of the ND280 near detector in the T2K neutrino oscillation experiment, used for muon detection and flux measurement.
Contribution
It introduces the SMRD's design, construction, and performance evaluation, providing insights into its role within the T2K experiment's neutrino detection system.
Findings
SMRD effectively detects muons in the T2K experiment.
The detector's response and performance meet design expectations.
The SMRD enhances the accuracy of neutrino flux measurements.
Abstract
The T2K experiment is a long baseline neutrino oscillation experiment aiming to observe the appearance of {\nu} e in a {\nu}{\mu} beam. The {\nu}{\mu} beam is produced at the Japan Proton Accelerator Research Complex (J-PARC), observed with the 295 km distant Super- Kamiokande Detector and monitored by a suite of near detectors at 280m from the proton target. The near detectors include a magnetized off-axis detector (ND280) which measures the un-oscillated neutrino flux and neutrino cross sections. The present paper describes the outermost component of ND280 which is a side muon range detector (SMRD) composed of scintillation counters with embedded wavelength shifting fibers and Multi-Pixel Photon Counter read-out. The components, performance and response of the SMRD are presented.
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