The T2K experiment
external page T2K is a long-baseline neutrino oscillation experiment based in Japan. It produces muon neutrino and antineutrino beam by accelerating protons up to 30 GeV and impinging them on a graphite. Neutrinos are detected at both ND280, the near detector complex positioned at only 280 m from the neutrino production point, before neutrino oscillations can occur, and at the Super-K water Cherenkov detector, 295 km far away where the probability to for a muon neutrino to oscillate to an electron neutrino is maximum.
In 2023 We have completed a major upgrade of the proton accelerator and neutrino beam line as well as of the magnetised near detector. Now, we are collecting neutrino data. A neutrino interaction detected in June 2024 is shown here:
The upgraded ND280 al lows to achieve an unprecedented resolution in the detection of neutrinos. This is crucial to improve the modelling of neutrinonucleus interact ions and reduce systematic uncertainties in the search for leptonic CP violation.
Our current focus is on the analysis of he new ND280 data. The novel plastic scintillator detector, made of approximately 2,000,000 scintillating plastic cubes, provides precise 3D mages of neutrino interactions with nanosecond resolution.
We use machine learning methods to exploit all the information provided by the new detectors and develop new kinematical analyses for the precise study of the neutrino-nucleus cross section.
