• Photosensor cover development by Spanish collaborators

    Ultra-sensitive photosensors with a diameter of 50 cm are used in the Hyper-Kamiokande. The photosensor has adequate water pressure resistance for use in water of the detector, and installing photosensor cover will increase safety. Hyper-Kamiokande is an international research collaboration, with various countries sharing the research and development work. The Spanish group is playing a […]

  • Groundbreaking ceremony for Hyper-Kamiokande

    The groundbreaking ceremony for the Hyper-Kamiokande, a new world-leading international scientific research project which is set to start experiments in 2027, was held at its construction site in Hida City, Gifu Prefecture, Japan on May 28, 2021. As nine areas including Tokyo and Osaka were under the COVID-19 state of emergency, about half of the […]

  • Excavation for the Hyper-Kamiokande access tunnel has begun

    The access tunnel excavation for the Hyper-Kamiokande project begun on the 6th May. Following the completion of the entrance yard construction, the excavation work started in earnest. An approximately 2km long tunnel will be rapidly excavated in 9 months followed by the excavation of approach tunnels and the main cavern. With preparations going smoothly, the […]

  • The production of Hyper-Kamiokande photosensors has begun

    Charged particles generated by high-energy events, such as neutrino interactions or proton decay, emit Cherenkov light when they pass through the water. Photosensors attached to the wall of the Hyper-Kamiokande tank are used to collect this Cherenkov light. The light collected is then used to identify the type of each particle and to measure their […]

  • Hyper-Kamiokande elects spokespeople

    With the approval of the Hyper-Kamiokande experiment in Japan and the approval of the collaboration agreement, Hyper-Kamiokande moved in June 2020 from a proto-collaboration to a collaboration. The collaboration elected its first co-spokespersons in December 2020: Prof. Masato Shiozawa (as the Japanese spokesperson from ICRR University of Tokyo, Japan) and Prof. Francesca Di Lodovico (as […]

  • Letter of recommendation for the future strategy of the J-Parc neutrino programme

    A panel has been formed to recommend a strategy for the future of the J-PARC neutrino programme. The members were chosen from the T2K collaboration, the Hyper-K proto-collaboration and the J-PARC accelerator group. The recommendation focuses on the transition period between T2K and Hyper-K and the importance of data taking during this period. The letter […]