2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/182669The recent discovery that neutrinos have mass opens a wide new field of experimentation. Accelerator-made neutrinos are essential. Ideas for future facilities include superbeams beta-beams and neutrino factories, each associated with one or several options for detector systems. A summary of the perceived virtues and shortcomings of these options, and a number of open questions, are presented.based on an Invited plenary presentation at NUFACT05, Frascati, June 2005High Energy Physics - Phenomenologytext