Recent studies of the performance of radio-frequency (rf) copper cavities operated at
cryogenic temperatures have shown a dramatic increase in the maximum achievable …

At the electron linac for beams with high brilliance and low emittance (ELBE) center for high-
power radiation sources, the second version of a superconducting radio-frequency (SRF) …

Planar nitrogen-incorporated ultrananocrystalline diamond [(N) UNCD] has emerged as a
unique field emission source attractive for accelerator applications because of its capability …

We report on measurements and analysis of a field-emitted electron current in the very-high-
frequency (VHF) gun, a room temperature rf gun operating at high field and continuous wave …

L-band normal conducting RF guns operating at long pulse mode and high gradient are
installed at the European X-ray Free-Electron Laser (European XFEL) and the Free-electron …

Undesirable electron field emission (also known as dark current) in high gradient rf
photocathode guns deteriorates the quality of the photoemission current and limits the …

Operational experience of a 500 kV photoemission gun at the compact energy recovery
linac (cERL) of the High Energy Accelerator Research Organization is presented. The gun …

Electron sources are essential to an array of electron accelerator supporting research in
high-energy physics and beyond. This report summarizes the" Snowmass 2021 Electron …

In the Chinese ADS front-end demo superconducting radiofrequency linac (CAFe) at the
Institute of Modern Physics, a burst-noise signal-triggered cavity fault frequently appears …

This article presents a novel methodology to estimate dark current in the superconducting
cavity as a function of acceleration gradient during its qualification in a vertical test stand …