Author/Authors :
Matsuoka، نويسنده , , K. and Ichikawa، نويسنده , , A.K. and Kubo، نويسنده , , H. and Maeda، نويسنده , , K. and Maruyama، نويسنده , , T. and Matsumura، نويسنده , , C. and Murakami، نويسنده , , A. and Nakaya، نويسنده , , T. and Nishikawa، نويسنده , , K. and Ozaki، نويسنده , , T. and Sakashita، نويسنده , , K. and Suzuki، نويسنده , , K. and Suzuki، نويسنده , , S.Y. and Tashiro، نويسنده , , K. and Yamamoto، نويسنده , , K. and Yokoyama، نويسنده ,
Abstract :
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.
Keywords :
T2K , ionization chamber , J-PARC , Silicon PIN photodiode , Muon monitor , Neutrino beam
