# Accurate Taylor transfer maps for large aperture iron dominated magnets used in charged particle separators and spectrometers

## TL;DR

This paper develops accurate Taylor transfer maps for large aperture iron-dominated magnets in charged particle separators, considering magnetic saturation effects to improve resolution and optimization.

## Contribution

It introduces a method to generate rigidity-dependent Taylor transfer maps from measurements and simulations, accounting for magnetic saturation effects.

## Key findings

- Transfer maps accurately model magnet behavior at high energies.
- Magnetic saturation significantly affects image aberrations.
- Enhanced optimization of separator performance.

## Abstract

For high-resolution separators like the projected Super-FRS at FAIR, an adapted and accurate ion-optical model considering realistic B-dependent magnet parameters is crucial in achieving the desired parameters (e.g. resolution) and to enable a fast optimization. Starting from the magnetic field measurements and simulations, rigidity-dependent Taylor transfer maps are generated for the Super-FRS preseparator dipole magnets. The effects of the magnetic saturation in the steel yoke on the image aberrations are analyzed.