Since the discovery of electron-wave duality, electron scattering instrumentation has
developed into a powerful array of techniques for revealing the atomic structure of matter …

In this paper, we review the status of bright electron sources. High peak current (up to kA)
low emittance (< 1 mm rad) electron beams have been one of the critical components in the …

X-ray free-electron lasers (FELs) produce femtosecond x-ray pulses with unprecedented
intensities that are uniquely suited for studying many phenomena in atomic, molecular, and …

The ability to resolve the dynamics of matter on its native temporal and spatial scales
constitutes a key challenge and convergent theme across chemistry, biology, and materials …

We present a detailed study of the six-dimensional phase space of the electron beam
produced by the Cornell Energy Recovery Linac Photoinjector, a high-brightness, high …

Continuous-wave photoinjectors operating at high accelerating gradients promise to
revolutionize many areas of science and applications. They can establish the basis for a …

We present the design and optimization of a new instrument for ultrafast electron diffraction
and imaging. The proposed instrument merges the high peak current and relativistic electron …

The emittance of high brightness electron sources, particularly field emitters and
photocathodes but also thermionic sources, is increased by surface roughness on the …

We present the results of transverse emittance and longitudinal current profile
measurements of high bunch charge (≥ 100 pC) beams produced in the DC gun-based …

In this work, nondestructive virtual diagnostics are applied to retrieve the electron beam time
of arrival and energy in a relativistic ultrafast electron diffraction (UED) beamline using …