Speaker
Description
The long baseline T2K neutrino experiment in Japan obtained a first indication of CP violation in neutrino oscillations. To get better sensitivity, T2K will accumulate more statistics with a higher intensity beam and the upgraded near detector ND280 which allows us to reduce systematic uncertainties in oscillation measurements. The upgraded detector will have the full polar angle coverage for muons produced in neutrino charged current interactions, a low threshold for proton detection, good electron/gamma separation, and will be able to measure neutrons using time-of-flight. A new 3D highly granular scintillator detector called SuperFGD with a mass of about 2 tons is constructed and serves a key element of the ND280 complex. SuperFGD consists of about two millions of small optically-isolated plastic scintillator cubes with a 1 cm side. Each cube is read out in the three orthogonal directions with wave-length shifting (WLS) fibers coupled to micro pixel photon counters (MPPC). All cubes are assembled in a light protected box with about 60000 holes for WLS fibers. SuperFGD was installed in in the ND280 magnet in 2023 and begun data taking in 2024. In this talk, the unique features, results of calibration and obtained parameters of this detector will be reported. The emphasis will be put on measurements and reconstruction of neutrino events detected by SuperFGD in the T2K neutrino beam.
| Position | Professor |
|---|---|
| Affiliation | INR Moscow |
| Country | Russia |