Pulsed Electron Lenses for Space Charge Mitigation

TL;DR

This paper investigates pulsed electron lenses as a method to mitigate space charge effects in synchrotrons, demonstrating potential increases in beam intensity limits through detailed simulations.

Contribution

It introduces a detailed 3D simulation study showing how pulsed electron lenses can significantly increase space charge limits in synchrotrons.

Findings

Up to 50% increase in space charge limit with a low number of electron lenses.

Conceptual 100% increase with more lenses, saturating near the 2D limit.

Realistic machine and space charge models are used in the simulations.

Abstract

To produce the intense, high-quality hadron beams required by future nuclear and high-energy physics experiments, synchrotrons need to overcome a most prominent intensity limitation i.e., space charge. This Letter characterizes the potential of pulsed electron lenses in detailed 3D tracking simulations, key to which is a realistic machine and space charge model. The space charge limit, imparted by betatron resonances, is shown to be increased by up to 50% using a low symmetric number of electron lenses in application to the FAIR SIS100 synchrotron. Conceptually, a 100% increase is demonstrated with a larger number of electron lenses, which is found to rapidly saturate near the theoretical 2D limit.