Dr Hiroyuki Sekiya (ICRR/IPMU)
Plans of water source, pure water system, and water flow in the tank.
Prof. Mark Vagins (IPMU)
Progress on the the design and pricing of the water system for the gadolinium option for Hyper-Kamiokande will be presented, as well as the current status of the EGADS gadolinium test project.
David Jaffe (BNL)
Samples of water-based liquid scintillator, liquid scintillator and water were exposed to proton beams of kinetic energy 210, 475 and 2000 MeV. Preliminary results on light yield will be presented. Implications for the scientific agenda of future large water Cherenkov detectors will be discussed.