Our experimental physics activities are related to the neutrino physics. We are collaboration members of the main long baseline accelerator neutrino experiments and reactor (anti)neutrino experiment.

HyperKamiokande is a new, megaton-scale water cherenkov detector project offering a 25-fold increase of fiducial volume over the existing 50 kiloton (22.5 kiloton fiducial) SuperKamiokande detector. This will provide decisive improvements in non-accelerator measurements such as the proton decay rate, and the detection of solar and atmospheric neutrinos and neutrinos from supernovae explosions. Exposed to the anticipated upgraded beam of T2K reaching a power 0.75MW-1.3MW, the T2HK project will allow a discovery of CP violation (5σ) in leptonic charged-current interactions. The HyperKamiokande international collaboration proposal has been classified at Japanese government level as a science project of the highest priority, and was approved in early 2020.

Liquid Argon TPC technology, which was initially developed in Europe, now forms the basis for an exciting new experiment, the international Deep Underground Neutrino Detector (DUNE) project. Liquid argon detectors feature outstanding pattern recognition and background rejection, and, importantly for long baseline experiments using spectral (L/E) information, an excellent total energy reconstruction over a wide range of energies. They thus they constitute a powerful exploration tool for neutrino oscillations, complementary to the more massive but lower-resolution water Cherenkov approach. The DUNE project is based on the earlier LBNE layout, with a 4x17 kton (40kton fiducial) liquid argon TPC detector situated in the Stanford Underground Research Facility (SURF) at a distance of 1300 km from FNAL, where a new neutrino beam line and near-detector facilities would be constructed. Physics goals include measurement of the neutrino mass hierarchy, CP violation, nucleon decay, cosmic neutrinos etc. Currently at CERN two proto-DUNE detectors were constructed in order to verify new detection technologies by using LHC proton beam facilities.

The Jiangmen Underground Neutrino Observatory (JUNO), a 20 kiloton multi-purpose underground liquid scintillator detector, was proposed with the determination of the neutrino mass hierarchy as a primary physics goal. It is also capable of observing neutrinos from terrestrial and extra-terrestrial sources, including supernova burst neutrinos, diffuse supernova neutrino background, geo-neutrinos, atmospheric neutrinos, solar neutrinos, as well as exotics such as dark matter and sterile neutrinos. It located south of Hong Kong at the distance 53 km from two main nuclear power plants.