Acceleration and manipulation of electron bunches underlie most electron and X-ray
devices used for ultrafast imaging and spectroscopy. New terahertz-driven concepts offer …

A new local field quantity is presented which gives the high gradient performance limit of
accelerating structures due to vacuum rf breakdown. The new field quantity, a modified …

This article will review methods used at the SLAC National Accelerator Laboratory and other
world accelerator laboratories to design high-gradient normal conducting accelerating …

Terahertz-driven acceleration has recently emerged as a route for delivering ultrashort bright
electron beams efficiently, reliably and in a compact set-up. Many working schemes and key …

A novel high-gradient accelerating structure with low phase velocity, v/c= 0.38, has been
designed, manufactured and high-power tested. The structure was designed and built using …

We are exploring the physics and frequency-scaling of vacuum rf breakdowns at sub-THz
frequencies. We present the experimental results of rf tests performed in metallic mm-wave …

Understanding plasma initiation in vacuum arc discharges can help to bridge the gap
between nano‐scale triggering phenomena and the macroscopic surface damage caused …

In an increasing number of high-gradient linear accelerator applications, accelerating
structures must operate with both high surface electric fields and low breakdown rates …

Sufficiently high voltage applied between two metal electrodes, even in ultra high vacuum
conditions, results in an inevitable discharge that lights up the entire gap, opening a …

This thesis describes the development and operation of multiple high power X-band RF test
facilities for high gradient acceleration and deflecting structures at CERN, as re-quired for …