Deeksha

Our research explores how higher-order electromagnetic fields naturally present in RF accelerator structures affect charged particle beams. By studying these fields through simulation and analysis, we aim to determine whether they can be used as a tool to improve beam quality and enable new methods of beam manipulation for scientific and industrial applications.

We are currently investigating two applications that leverage HOMs to enhance accelerator performance. The first focuses on an RF electron gun operating with both the fundamental accelerating mode and a higher-order mode. By introducing an additional knob in the accelerating field, we gain more control over the longitudinal phase space of the beam, enabling electron bunch compression.
The second application employs a third-harmonic mode in an RF kicker device. Here, the higher-order mode is used to linearize the kicker field, improving the selective removal of bunch tails that can otherwise lead to beam losses and quenching of downstream superconducting accelerator components.

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