Ballistic Bunching of Photo-Injected Electron Bunches with Dielectric-Lined Waveguide
arXiv:1407.1005 · doi:10.1103/PhysRevSTAB.17.112804
Abstract
We describe a simple technique to passively bunch non-ultrarelativistics (~MeV) electron bunches produced in conventional photoinjectors. The scheme employs a dielectric-lined waveguide located downstream of the electron source to impress an energy modulation on a picosecond bunch. The energy modulation is then converted into a density modulation via ballistic bunching. The method is shown to support the generation of sub-picosecond bunch train with multi-kA peak currents. The relatively simple technique is expected to find applications in compact, accelerator-based, light sources and advanced beam-driven accelerator methods.
9 pages, 13 figures