Electron channeling radiation experiments at very high electron bunch
charges
PHYSICAL REVIEW A, (December 2003)DOI: 10.1103/PhysRevA.68.062901
Abstract
Plasmas offer the possibility of high acceleration gradients. An
intriguing suggestion is to use the higher plasma densities possible in
solids to get extremely high gradients. Although solid-state plasmas
might produce high gradients they would pose daunting problems. Crystal
channeling has been suggested as one mechanism to address these
challenges. There is no experimental or theoretical guidance on
channeling for intense electron beams. A high-density plasma in a
crystal lattice could quench the channeling process. An experiment has
been carried out at the Fermilab NICADD Photoinjector Laboratory to
observe electron channeling radiation at high bunch charges. An electron
beam with up to 8 nC per electron bunch was used to investigate the
electron-crystal interaction. No evidence was found of quenching of
channeling at charge densities two orders of magnitude larger than that
in earlier experiments.