QUASAR-370 hybrid phototube as a prototype of a photodetector for the next generation of deep underwater neutrino telescopes

In this paper we show that QUASAR-370 large area hybrid phototube developed for and successfully used in a number of astroparticle physics experiments, the lake Baikal deep underwater neutrino experiment among them, could be used as a prototype of a photodetector for the next generation of giant neutrino telescopes.