# A FODO racetrack ring design and optimization for nuSTORM

## TL;DR

This paper presents a FODO racetrack ring design for nuSTORM, optimizing the layout and magnetic elements using genetic algorithms and simulated annealing to improve neutrino beam quality and storage efficiency.

## Contribution

It introduces a novel FODO racetrack ring design for nuSTORM and applies advanced optimization algorithms to enhance its performance.

## Key findings

- Optimized ring layout with improved beam injection
- Effective correction of chromatic effects using sextupoles
- Enhanced muon decay rates for neutrino production

## Abstract

The goal of nuSTORM is to provide well-defined neutrino beams for precise measurements of neutrino cross-sections and oscillations. The nuSTORM decay ring is a compact racetrack storage ring with a circumference of ~480 m that incorporates large aperture (60 cm diameter) magnets. There are many challenges in the design. In order to incorporate the Orbit Combination Section (OCS), used for injecting the pion beam into the ring, a dispersion suppressor is needed adjacent to the OCS. Concurrently, in order to maximize the number of useful muon decays, strong bending dipoles are needed in the arcs to minimize the arc length. These dipoles create strong chromatic effects, which need to be corrected by nonlinear sextupole elements in the ring. In this paper, a FODO racetrack ring design and its optimization using sextupolar fields via both a Genetic Algorithm (GA) and a Simulated Annealing (SA) algorithm will be discussed.