Investigation of an alternate means of wakefield suppression in the main linacs of CLIC

TL;DR

This paper explores a new method for suppressing wakefields in CLIC accelerator structures using detuning and damping, focusing on design modifications to improve performance and stability.

Contribution

It introduces a novel approach combining strong detuning and moderate damping to effectively suppress long-range wakefields in CLIC structures.

Findings

Successful suppression of wakefields with Q of 300 and 500

Maintained a dipole bandwidth of approximately 1 GHz

Developed a circuit model for rapid design of coupled manifolds

Abstract

We report on suppression of long-range wakefields in CLIC accelerating structures. Strong detuning and moderate damping is employed. In these initial design studies we focus on the CLIC_G structure and enforce a moderate Q of 300 and 500. We maintain a dipole bandwidth of approximately 1 GHz as specified from breakdown constraints in a modified structure, CLIC_DDS. The circuit model, which facilitates a rapid design of manifolds slot-coupled to the main accelerating cells, is described.