Racetrack FFAG muon decay ring for nuSTORM with triplet focusing

TL;DR

This paper proposes a racetrack FFAG muon decay ring with triplet focusing for nuSTORM, offering potential advantages over traditional FODO designs for precise neutrino experiments.

Contribution

It introduces a novel racetrack scaling FFAG decay ring design with triplet focusing, analyzing its advantages and design parameters for neutrino research.

Findings

Potential for improved beam stability and focusing.

Enhanced efficiency in muon storage and decay.

Feasibility of the design for neutrino experiments.

Abstract

The neutrino beam produced from muons decaying in a storage ring would be an ideal tool for precise neutrino cross section measurements and the search for sterile neutrinos due to its precisely known flavour content and spectrum. In the proposed nuSTORM facility, pions would be directly injected into a racetrack storage ring, where the circulating muon beam would be captured. In this paper we show that a muon decay ring based on a racetrack scaling FFAG (Fixed Field Alternating Gradient) with triplet focusing structures is a very promising option with potential advantages over the FODO based solution. We discuss the ring concept, machine parameters, linear optics design, beam dynamics and the injection system.