Injection Scheme with Deflecting Cavity for Ultimate Storage Ring

TL;DR

This paper proposes a novel on-axis injection scheme for ultimate storage rings using two deflecting cavities to improve beam injection efficiency by manipulating the transverse and longitudinal phase space.

Contribution

It introduces a new injection method employing two deflecting cavities to effectively overlay injected and stored beams in phase space, enhancing injection performance.

Findings

Theoretical analysis confirms the feasibility of the scheme.

Numerical simulations demonstrate successful beam overlay.

The method improves injection efficiency in storage rings.

Abstract

We suggest a new on-axis injection scheme that uses two deflecting cavities to remove the tilt of the stored beam, and to kick the injected beam into the ring. In this new injection scheme, an injected beam with a certain angle is overlaid on the stored beam position in transverse phase space through the second deflecting cavity. (Note that the injected beam has separated phase with the stored beam in longitudinal phase space). We present theoretical analysis and numerical simulations of the stored beam and injected beam with the new injection scheme.