Speaker
Description
Downscaling particle accelerators is crucial to expanding their range of applications. Dielectric-lined waveguides (DLWs) can support hybrid modes with a strong accelerating component. Excited by terahertz (THz) frequency pulses, DLWs can deliver high accelerating gradients over cm-scale interaction lengths, promising the development of future compact electron accelerators. By precisely tailoring the waveguide geometry, the modal field profile and phase velocities can be tuned to maintain synchronisation between the weakly relativistic bunches and the accelerating mode over extended distances. Here, we design and evaluate THz-driven tapered DLWs delivering high-quality, MeV-level electron bunches in two types of symmetrical DLW waveguides: rectangular and cylindrical. We use analytic models of accelerating modes to simulate transport and acceleration of an externally injected 100-keV electron beam across various DLW geometries. A genetic algorithm is employed to identify Pareto-optimal geometries based on the final bunch characteristics.
| In which format do you inted to submit your paper? | LaTeX |
|---|---|
| Preprint marking on your proceeding paper | I wish my paper to be marked as preprint. |