Normal-Conducting VHF guns provides short, stable, high repetition rate, relativistic electron pulses with transverse brightness required to drive X-Ray Free Electron Lasers. In this talk will review the current status of the technology and discuss its possible use in High Energy Physics, together with future possible R&D avenues for increased performance.
High brightness electron beams are appealing for light sources, electron microscopy, and high energy collider, etc. An Ultra-high gradient on cathode is one of the most desirable parameters that improve the beam brightness. However, the maximum gradient is limited by the effects of RF breakdown in general. We present development of an X-band electron photoinjector operating in a very short RF...