Initial Beam Dynamics Simulations of a High-Average-Current Field-Emission Electron Source in a Superconducting RadioFrequency Gun

TL;DR

This paper demonstrates through beam-dynamics simulations that a high-current field-emission electron source combined with a superconducting RF cavity can produce an approximately 300 kW average-power electron beam, advancing high-power beam technology.

Contribution

It introduces a novel scheme combining a high-current field-emission source with an SRF gun and validates its feasibility through detailed simulations.

Findings

Viability of producing ~300 kW electron beam demonstrated

Simulation results support high-current, high-power beam generation

Potential for societal applications of high-power electron beams

Abstract

High-power electron beams are sought-after tools in support to a wide array of societal applications. This paper investigates the production of high-power electron beams by combining a high-current field-emission electron source to a superconducting radio-frequency (SRF) cavity. We especially carry out beam-dynamics simulations that demonstrate the viability of the scheme to form $\sim$ 300 kW average-power electron beam using a 1+1/2-cell SRF gun.