Thoughts On Incorporating HPRF In A Linear Cooling Channel

TL;DR

This paper explores a hybrid approach using high-pressure hydrogen gas-filled RF cavities combined with LiH absorbers in a muon cooling channel, aiming to improve performance and mitigate RF breakdown issues.

Contribution

It proposes a novel hybrid design for muon cooling channels that integrates HPRF cavities with LiH absorbers, addressing RF breakdown challenges.

Findings

Channel performance comparable to vacuum RF channels

Potential to avoid RF gradient degradation in magnetic fields

Initial simulations support feasibility of the hybrid approach

Abstract

We discuss a possible implementation of high-pressure gas-filled RF (HPRF) cavities in a linear cooling channel for muons and some of the technical issues that must be dealt with. The approach we describe is a hybrid approach that uses high-pressure hydrogen gas to avoid cavity breakdown, along with discrete LiH absorbers to provide the majority of the energy loss. Initial simulations show that the channel performs as well as the original vacuum RF channel while potentially avoiding the degradation in RF gradient associated with the strong magnetic field in the cooling channel.