Electron gun producing beams with controllable current density

A High Current, High Gradient, Laser Excited, Pulsed Electron Gun

This paper describes a pulsed electron gun that can be used as an FEL, as an injector for electron linear accelerators or for rf power generation. It comprises a 1 to 5 MeV, 1 to 2 ns pulsed power supply feeding a single diode, photoexcited acceleration gap. Beam quality of a ~ 1nC charge in ~ 1 GV/m field was studied. Computations of the beam parameters as a function of electrode configuration...

Electron Gun Technology

Electron Gun with Adiabatic Plasma Lens

For researches on plasma physics has been designed and constructed the electronic gun with the cold cathode on energy to 300 кэВ. The gun have the parameters: time width of pulses -100 ns, current amplitude 100 A. The adiabatic plasma lens is developed for transportation and compression of the received electron beam. Results of researches are presented.

Electron Gun Beam Extraction with Mosfets

Electron beams with an energy range of 10keV at 2A requiring intensity modulation with bandwidth from 50kHz 7.5MHz pose an interesting problem to the RF designer. Driving the extraction electrode of an electron gun can be a challenge with these requirements. The straight forward approach is the construction of a vacuum tube, single ended amplifier capable of delivering the anode voltage to the ...

Photoelectron beams from the UCLA rf gun

A high brightness, low emittance photocathode rf gun is starting operation at UCLA as an injector to a 20 MeV linac. This linac will initially be used to drive FELs, plasma wakefield accelerators, and to test plasma lenses. The gun is a 1 89 cell ~r-mode standing wave structure running at 2.856 GHz, and has a copper photocathode. In the initial commissioning of the gun, photoelectron beams of u...