Design and performance of the muon monitor for the T2K neutrino oscillation experiment

Abstract

This article describes the design and performance of the muon monitor for the T2K (Tokaito-Kamioka) long baseline neutrino oscillation experiment. The muon monitor consists of two types of detector arrays: ionization chambers and silicon PIN photodiodes. It measures the intensity and profile of muons produced, along with neutrinos, in the decay of pions. The measurement is sensitive to the intensity and direction of the neutrino beam. The linearity and stability of the detectors were measured in beam tests to be within 2.4% and 1.5%, respectively. Based on the test results, the precision of the beam direction measured by the muon monitor is expected to be 0.25 mrad.

22 pages

References in corpus (2)

• Measurement of Neutrino Oscillation by the K2K Experiment
• Secondary Beam Monitors for the NuMI Facility at FNAL

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• First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single-${\pi }^{+}$ production channel containing at least one proton
• Design and diagnostics of high-precision accelerator neutrino beams
• First measurement of muon neutrino charged-current interactions on hydrocarbon without pions in the final state using multiple detectors with correlated energy spectra at T2K
• Performance evaluation of electron multiplier tubes as a high-intensity muon beam monitor of accelerator neutrino experiments