Numerical investigation of tuning method for nonuniform disk-loaded waveguides

TL;DR

This paper evaluates the accuracy of tuning methods for nonuniform disk-loaded waveguides, showing that simple tuning coefficients are effective for most parameters but deviations occur in injector sections affecting beam characteristics.

Contribution

It provides a numerical assessment of tuning methods for nonuniform DLWs, highlighting the need to consider additional phase shifts in injector sections.

Findings

Simple tuning coefficients are effective for most DLW parameters.

Deviations occur in injector sections with phase velocity and amplitude changes.

Additional phase shift influences beam characteristics at the injector exit.

Abstract

On the base of more general model we assessed accuracy of method that is widely used for post- tuning accelerator sections. Our consideration has shown that for wide range of disk loaded waveguide (DLW) parameters using simple tuning coefficients gives appropriate characteristics of DLWs. For injector sections, in which phase velocity and amplitude change, there are some deviation from the desired characteristics. It is necessary to evaluate the influence of additional phase shift on beam characteristics at the injector exit.