Frequency Jump at Low Energies

TL;DR

This paper proposes performing the first radio-frequency frequency jump at low energies (eta  0.1) between two RFQ accelerators, aiming to improve beam matching and accelerator design efficiency.

Contribution

It introduces a novel approach of early frequency jump at low energies between RFQ accelerators, supported by initial feasibility studies.

Findings

Feasibility of low-energy frequency jump demonstrated

Potential advantages in accelerator design identified

Ongoing efforts to optimize beam matching at transition

Abstract

One or more radio-frequency jumps are usually necessary for realizing a >= 100 AMeV/u proton or ion driver linac. Typically, such jumps happen in the range of \b{eta} = 0.2-0.6 between the resonator structures fitting to this \b{eta}-range, e.g. DTL, HWR, CCL or elliptical cavities. We propose to perform the first frequency jump already at low energies (\b{eta} <= 0.1) between two RFQ accelerators, which can bring some unique advantages. First studies have been performed and the results proved that this idea is feasible and promising. Many efforts have been and are being made to address the most critical issue for the jumps i.e. the beam matching at the transition.