Parameters of the Disk Loaded Waveguide structure for intermediate particles acceleration in the intermediate energy range

TL;DR

This paper analyzes and optimizes the parameters of Disk Loaded Waveguide structures for accelerating intermediate particles like muons in the velocity range 0.04 to 1, focusing on design improvements for cost-effective systems.

Contribution

It provides a detailed analysis and optimization of DLW parameters for low eta ranges and proposes design criteria for intermediate particle acceleration systems.

Findings

Optimized DLW cell dimensions for eta=0.2 to 1

Identification of optimal phase advance for DLW sections

Development of cost-effective acceleration system designs

Abstract

The Disk Loaded Waveguide (DLW) is the mostly used high frequency structure for acceleration of lightweight particles - electrons in the high energy range. In some physical experiments acceleration of more heavy particles - muons to medium energies is required. DLW parameters are considered for particle velocity 0.04 < \beta < 1 both for the fundamental and the nearest backward spatial harmonics. Physical and technical restrictions for DLW application in the low \beta range and lower frequency (the L-band range) are analyzed. Basing on particularities of acceleration with Traveling Wave (TW) mode, deep optimization of DLW cells dimensions, the choice of optimal operating phase advance for DLW section and combination of forward and backward TW modes, it is possible to create simple, cost effective acceleration system for acceleration in the velocity range 0.2 < \beta < 1 for intermediate particles, in some parameters overcoming accelerating system with RF cavities in Standing Wave (SW) mode. Design criteria are discussed and examples of possible accelerating systems are presented.