Adaptive Matching Of The IOTA Ring Linear Optics For Space Charge Compensation

TL;DR

This paper presents an adaptive algorithm for linear lattice re-matching in high-intensity accelerators, accounting for space charge effects to optimize beam optics and improve machine performance.

Contribution

It introduces a novel iterative SVD-based method for adaptive lattice re-matching that fully incorporates space charge effects in the linear approximation.

Findings

Effective in optimizing lattice parameters with space charge considerations

Improves beam stability and optics accuracy in high-intensity accelerators

Applicable to Fermilab's IOTA ring for enhanced operation

Abstract

Many present and future accelerators must operate with high intensity beams when distortions induced by space charge forces are among major limiting factors. Betatron tune depression of above approximately 0.1 per cell leads to significant distortions of linear optics. Many aspects of machine operation depend on proper relations between lattice functions and phase advances, and can be improved with proper treatment of space charge effects. We implement an adaptive algorithm for linear lattice re matching with full account of space charge in the linear approximation for the case of Fermilab's IOTA ring. The method is based on a search for initial second moments that give closed solution and, at the same time, satisfy predefined set of goals for emittances, beta functions, dispersions and phase advances at and between points of interest. Iterative singular value decomposition based technique is used to search for optimum by varying wide array of model parameters.