Recent Progress in Neutrino Factory and Muon Collider Research within the Muon Collaboration

TL;DR

This paper reviews recent progress in muon cooling, neutrino factory development, and muon collider research, highlighting technical challenges, physics potential, and ongoing experimental efforts to demonstrate ionization cooling.

Contribution

It provides an updated overview of the technological advancements and experimental plans for muon cooling and collider development within the Muon Collaboration.

Findings

Progress in understanding muon collection and cooling techniques.

Designs of cooling channels including ring coolers show promise.

An international experiment is being prepared to demonstrate ionization cooling.

Abstract

We describe the status of our effort to realize a first neutrino factory and the progress made in understanding the problems associated with the collection and cooling of muons towards that end. We summarize the physics that can be done with neutrino factories as well as with intense cold beams of muons. The physics potential of muon colliders is reviewed, both as Higgs Factories and compact high energy lepton colliders. The status and timescale of our research and development effort is reviewed as well as the latest designs in cooling channels including the promise of ring coolers in achieving longitudinal and transverse cooling simultaneously. We detail the efforts being made to mount an international cooling experiment to demonstrate the ionization cooling of muons.