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

This article describes the design and performance of the muon monitor for the T2K (Tokai-to-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 muo...

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Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2010-12, Vol.624 (3), p.591-600
Main Authors: Matsuoka, K., Ichikawa, A.K., Kubo, H., Maeda, K., Maruyama, T., Matsumura, C., Murakami, A., Nakaya, T., Nishikawa, K., Ozaki, T., Sakashita, K., Suzuki, K., Suzuki, S.Y., Tashiro, K., Yamamoto, K., Yokoyama, M.
Format: Article
Language:English
Subjects:
Ionization chamber
J-PARC
Muon monitor
Neutrino beam
Silicon PIN photodiode
T2K
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Summary:This article describes the design and performance of the muon monitor for the T2K (Tokai-to-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.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2010.09.074