Recycler barrier RF buckets

TL;DR

This paper reviews the use of barrier RF systems in Fermilab's Recycler Ring, discussing historical development, beam dynamics, linearization techniques, emittance measurement methods, and their critical role in enhancing Tevatron collider performance.

Contribution

It provides a comprehensive overview of barrier RF systems, including recent schemes for beam stacking and momentum mining, highlighting their impact on collider luminosity.

Findings

Effective barrier RF manipulation schemes enable improved beam stacking.

Linearization techniques produce long, flat bunches for better beam control.

Emittance measurement methods are crucial for optimizing beam quality.

Abstract

The Recycler Ring at Fermilab uses a barrier rf system for all of its rf manipulations. In this paper, I will give an overview of historical perspective on barrier rf systems, the longitudinal beam dynamics issues, aspects of rf linearization to produce long flat bunches and methods used for emittance measurements of the beam in the RR barrier rf buckets. Current rf manipulation schemes used for antiproton beam stacking and longitudinal momentum mining of the RR beam for the Tevatron collider operation are explained along with their importance in spectacular success of the Tevatron luminosity performance.