Speakers
Description
The T2K long-baseline neutrino oscillation experiment showed the strongest constraint on the CP violating phase, which governs the matter/antimatter symmetry breaking in neutrino oscillation. To further improve the experimental sensitivity, T2K will accumulate more statistics with a higher beam intensity and reduce systematics with an upgrade of the off-axis near detector. A novel 3D high granular scintillator detector, called SuperFGD, is used for the upgraded detector as a fully-active target. It consists of about 2 millions of 1 cm^3 optically-isolated plastic scintillator cubes. Scintillation light in the cubes is read out by 60,000 channels in the three orthogonal directions with wave-length shifting fibers coupled to MPPCs. Several beam tests with charged particles and neutrons were performed using several SuperFGD prototypes and demonstrated good performance. We are aiming to make the detector ready for installation in the beginning of 2023. In this talk, the main detector parameters, performance of SuperFGD prototypes in beam tests, current status and plans will be reported.
