A FODO racetrack ring for nuSTORM: design and optimization. (17th July 2017)

• Record Type: Journal Article
• Authors: Liu, A.; Bross, A.; Neuffer, D.
• Is Part Of: Journal of instrumentation. Volume 12:Number 7(2017:Jul.)
• Page Start: P07018
• Page End: P07018
• Publication Date: 2017-07-17
• Subjects: Accelerator Applications -- Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics) -- Beam dynamics -- Beam Optics; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/12/07/P07018
• Languages: English
• ISSNs: 1748-0221

Abstract

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.