Cavity and HOM Coupler Design for CEPC

TL;DR

This paper presents a cavity and HOM coupler design scheme for the CEPC main ring, including RF parameters and HOM damping results, ensuring beam stability in the collider.

Contribution

It introduces a specific cavity and HOM coupler design scheme with RF parameters and damping analysis for the CEPC.

Findings

HOM damping meets stability requirements

RF design parameters specified

HOM power calculated based on beam parameters

Abstract

In this paper we will show a cavity and higher order mode (HOM) coupler designing scheme for the Circular Electron-Positron Collider (CEPC) main ring. The cavity radio frequency (RF) design parameters are showed in this paper. The HOM power is calculated based on the beam parameters in the Preliminary Conceptual Design Report (Pre-CDR). The damping results of the higher order modes (HOMs) and same order modes (SOMs) show that they are reached the damping requirements for beam stability.