Fermilab 4.3-MeV Electron Cooler

TL;DR

This paper discusses the development, operation, and optimization of Fermilab's 4.3-MeV electron cooler, the first relativistic electron cooler, focusing on tuning and maximizing collider luminosity.

Contribution

It presents the design, implementation, and operational experience of the first relativistic electron cooler at Fermilab, including optimization strategies for collider performance.

Findings

Successful operation of the first relativistic electron cooler at Fermilab

Effective tuning methods for electron beam and cooling properties

Strategies for maximizing collider integrated luminosity

Abstract

The Recycler Electron Cooler (REC) was the first cooler working at a relativistic energy (gamma = 9.5). It was successfully developed in 1995-2004 and was in operation at Fermilab in 2005-2011, providing cooling of antiprotons in the Recycler ring. After introducing the physics of electron cooling and the REC system, this paper describes measurements carried out to tune the electron beam and optimize its cooling properties. In particular, we discuss the cooling strategy adopted for maximizing the collider integrated luminosity.