Abstract:

The neutrino business has blossomed in the last decade. We have discovered both peculiarly small but finite neutrino mass and the strange business of neutrinos morphing from one type to another. The art has advanced to the state of starting "neutrino applications", and many new initiatives are underway or proposed. Using neutrinos to study geology has attracted much interest and will grow into a new field of "geoneutrino" measurements to understand the earth's dynamics and composition, uniquely. There remains much particle physics to be done too (mixing and mass hierarchy). And we may employ small and close-in, and huge and distant detectors to keep track of nuclear reactor operations. Moreover coming along with all these new applications, for free, will be interesting new levels of sensitivity for nucleon decay, astrophysical phenomena and searches for exotic particles... plenty of opportunity for serendipitous discovery when probing into unexplored levels. The Hanohano project, aiming at building a 10 kiloton portable deep-ocean neutrino detector and other land based instruments will be discussed in this context.