Use of Wedge Absorbers in MICE

TL;DR

This paper explores the use of wedge absorbers in the MICE experiment to achieve transverse-longitudinal emittance exchanges, demonstrating large exchanges through simulations and analytical estimates under various configurations.

Contribution

It presents the first detailed analysis and simulation of wedge absorbers for emittance exchange in MICE, including direct and reverse configurations.

Findings

Large emittance exchanges are achievable with wedge absorbers.

Both direct and reverse configurations can be effectively used.

Simulations confirm the feasibility of emittance exchange in MICE parameters.

Abstract

Wedge absorbers are needed to obtain longitudinal cooling in ionization cooling. They also can be used to obtain emittance exchanges between longitudinal and transverse phase space. There can be large exchanges in emittance, even with single wedges. In the present note we explore the use of wedge absorbers in the MICE experiment to obtain transverse-longitudinal emittance exchanges within present and future operational conditions. The same wedge can be used to explore "direct" and "reverse" emittance exchange dynamics, where direct indicates a configuration that reduces momentum spread and reverse is a configuration that increases momentum spread. Analytical estimated and ICOOL and G4BeamLine simulations of the exchanges at MICE parameters are presented. Large exchanges can be obtained in both reverse and direct configurations.