Speaker
Description
For further investigation of neutrino oscillations in the T2K
experiment, a 3D segmented SuperFGD detector is constructed. It
consists of 2 million scintillation cubes of 1 cm3 size, with wavelength-
shifting (WLS) fibers along three orthogonal directions. Each fiber is read
out by a Hamamatsu Multi-Pixel Photon Counter S133060-1325PE. The
detector main goals are to reduce systematic uncertainties and increase
the sensitivity of a search for CP-violations in the lepton sector.
Preliminary results of time resolution using upstream and side fibers
were received with cosmic run after implementing time offset and time
walk calibration. It was obtained that the time resolution is $\sigma\simeq 1.17$ ns for
one fiber readout and a threshold of 40 photoelectrons. The main
calibration parameters, the light yield, and the attenuation length
obtained during the detector commissioning with cosmics and in the T2K
neutrino beam will be also presented in this report.
