Design Considerations for Proposed Fermilab Integrable RCS

TL;DR

This paper discusses the design considerations for a proposed Fermilab integrable Rapid-Cycling Synchrotron (iRCS) that utilizes integrable optics to enable high-intensity particle acceleration with improved stability and efficiency.

Contribution

It introduces a novel lattice design for the iRCS incorporating integrable optics principles, aiming to replace the Fermilab Booster for higher beam power.

Findings

Proposed lattice features include long dispersion-free drifts and low momentum compaction.

Design ensures bounded beta functions and chromaticity correction.

Provides a framework for optimizing integrable accelerator lattices.

Abstract

Integrable optics is an innovation in particle accelerator design that provides strong nonlinear focusing while avoiding parametric resonances. One promising application of integrable optics is to overcome the traditional limits on accelerator intensity imposed by betatron tune-spread and collective instabilities. The efficacy of high-intensity integrable accelerators will be undergo comprehensive testing over the next several years at the Fermilab Integrable Optics Test Accelerator (IOTA) and the University of Maryland Electron Ring (UMER). We propose an integrable Rapid-Cycling Synchrotron (iRCS) as a replacement for the Fermilab Booster to achieve multi-MW beam power for the Fermilab high-energy neutrino program. We provide a overview of the machine parameters and discuss an approach to lattice optimization. Integrable optics requires arcs with integer-pi phase advance followed by drifts with matched beta functions. We provide an example integrable lattice with features of a modern RCS - long dispersion-free drifts, low momentum compaction, superperiodicity, chromaticity correction, separate-function magnets, and bounded beta functions.