Future neutrino oscillation facilities

TL;DR

This paper reviews future neutrino oscillation facilities, discussing their designs, potential benefits, limitations, and open questions, emphasizing their role in advancing neutrino mass research and related physics.

Contribution

It provides a comprehensive overview of proposed future neutrino facilities, comparing their features, advantages, and challenges, and explores their potential for broader physics applications.

Findings

Different facility options offer unique synergetic capabilities.

Neutrino Factory could be a stepping stone to muon colliders.

Open questions remain about optimal designs and physics reach.

Abstract

The recent discovery that neutrinos have masses opens a wide new field of experimentation. Accelerator-made neutrinos are essential in this program. Ideas for future facilities include high intensity muon neutrino beams from pion decay (`SuperBeam'), electron neutrino beams from nuclei decays (`Beta Beam'), or muon and electron neutrino beams from muon decay (`Neutrino Factory'), each associated with one or several options for detector systems. Each option offers synergetic possibilities, e.g. some of the detectors can be used for proton decay searches, while the Neutrino Factory is a first step towards muon colliders. A summary of the perceived virtues and shortcomings of the various options, and a number of open questions are presented.