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 …

High-flux polarized particle beams are of critical importance for the investigation of spin-
dependent processes, such as in searches of physics beyond the standard model, as well …

This contribution describes the latest milestones of a multiyear program to build and operate
a compact-300 kV dc high voltage photogun with inverted insulator geometry and alkali …

Alkali antimonide photocathodes are capable of generating high brightness electron beams
given their high quantum efficiency and low mean transverse energy (MTE). Increasing the …

The Low Energy RHIC electron Cooling (LEReC) project at Brookhaven National Laboratory
recently demonstrated for the first time cooling of hadron bunches with radio-frequency (rf) …

The design and fabrication of electrodes for direct current (dc) high voltage photoemission
electron guns can significantly influence their performance, most notably in terms of …

Novel photocathode materials like ordered surfaces of single crystal metals, epitaxially
grown high quantum efficiency thin films, and topologically non-trivial materials with dirac …

We measure the tradeoff between the quantum efficiency and intrinsic emittance from a
NaKSb photocathode at three increasing wavelengths (635, 650, and 690 nm) at or below …

Linear electron accelerators and their applications such as ultrafast electron diffraction
require compact high-brightness electron sources with high voltage and electric field at the …

Driven by life-science applications, a mega-electron-volt Scanning Transmission Electron
Microscope (MeV-STEM) has been proposed here to image thick frozen biological samples …