Frictional cooling of positively charged particles

TL;DR

This paper investigates frictional cooling for positively charged particles, highlighting the need for modified schemes due to charge exchange interactions and demonstrating the limitations of foil-based methods.

Contribution

It introduces necessary modifications to frictional cooling schemes for positive particles and shows foil-based schemes are ineffective for them.

Findings

Charge exchange interactions significantly affect cooling schemes for positive particles.

Foil-based cooling schemes are not suitable for positive particles.

Simulation results support the need for alternative cooling methods.

Abstract

One of the focuses of research and development towards the construction of a muon collider is muon beam preparation. Simulation of frictional cooling shows that it can achieve the desired emittance reduction to produce high-luminosity muon beams. We show that for positively charged particles, charge exchange interactions necessitate significant changes to schemes previously developed for negatively charged particles. We also demonstrate that foil-based schemes are not viable for positive particles.