Space-charge becomes increasingly significant at high beam intensities such as used in FEL injectors and heavy ion inertial fusion drivers, where it dominates the beam dynamics. The University of Maryland Electron Ring (UMER) is a high intensity circular machine that is dedicated to the study of long path length space-chargedominated beam physics on a small scale. Over multiple turns, longitudi...

We have made the first observation of a charged particle beam by means of its electro-optical effect on the polarization of laser light in a LiNbO3 crystal. The modulation of the laser light during the passage of a pulsed electron beam was observed using a fast photodiode and a digital oscilloscope. The fastest rise time measured, 120 ps, was obtained in the single shot mode and was limited by ...

In a KrF laser inertial fusion energy (IFE) power plant [1] an array of N laser amplifiers would focus and symmetrically illuminate a fusion target with a total of ~3 MJ of laser light. The lasers are pumped by large-area electron beam diodes, whose technology is presently being developed on the Electra [1] and Nike [2] facilities at the Naval Research Laboratory in Washington, DC. Sufficient p...

The present contribution is concerned with an exact frame-based pulsed-beams expansion of planar aperture timedependent electromagnetic fields. The propagating field is described as a discrete superposition of tilted, shifted and delayed electromagnetic pulsed-beam waveobjects over the frame spectral lattice. Explicit asymptotic expressions for the electromagnetic pulsed-beam propagators are ob...

Generation of submillimeter radiation by stimulated Raman scattering in an intense relativistic electron beam subjected to a spatially periodic transverse electric field is examined. The requisite electric field modulation can be obtained by rippling the wall of the conducting drift tube. When the electron beam is subjected to a periodic longitudinal electric field, short wavelength plasmons, r...

This paper presents a study of combined modification silumin, which included deposition ZrN coating on silumin substrate and subsequent treatment the coating/substrate system with submillisecond pulsed electron beam. The local temperature samples in electron-beam-affected zone thickness melt were measured experimentally calculated using theoretical model. Stefan problem was solved numerically f...

Spallation sources dedicated to neutron scattering experiments, as well as multipurpose facilities serving several applications call for pulsed mode operation of a high intensity proton linac. There is general agreement on the superconducting technology for the high-energy part, which offers some advantages, like higher gradient capabilities or operational costs reduction, as compared to room-t...

is doing research in the areas of pulsed power and high power microwave technologies. Both, research and development of high power sources as well as related applications are in the focus. Applications for pulsed power technologies are ranging from material processing to bioelectrics. Microwave technologies are focusing on RF sources for electron cyclotron resonance heating and on applications ...

Spallation sources dedicated to neutron scattering experiments, as well as multi-purpose facilities serving several applications call for pulsed mode operation of a high intensity proton linac. There is general agreement on the superconducting technology for the high-energy part, which offers some advantages, like higher gradient capabilities or operational costs reduction, as compared to room-...

Using a pulsed electron beam evaporation in vacuum mesoporous nanopowder CaF 2 with specific surface area up to 60.5 m /g were produced. The effect of annealing different media on the evolution magnetic and texture properties nanoparticles has been studied. For first time, medium magnetization nanopowders was discovered. Keywords: nanopowders, calcium fluoride, ferromagnetism, evaporation.