Abstract

Hyper-Kamiokande (Hyper-K), a next generation underground water Cherenkov detector, is the logical continuation of the highly successful program of neutrino  (astro)physics and proton decay at Super-Kamiokande. The detector is an order of magnitude larger than Super-Kamiokande,  with the same photo-coverage, but largely improved photodetectors.  It will serve as a far detector of a long baseline neutrino experiment, 295 km away from the upgraded J-PARC beam.  It will also be a detector capable of searching for proton decay, and observing atmospheric neutrinos and neutrinos from astronomical sources. The status of Hyper-K R&D and projected sensitivities will be presented with  an emphasis on the long baseline neutrino oscillation measurements.