title: Electro-optic measurement of the wake fields of a relativistic electron beam.
abstract: When a relativistic electron bunch traverses a structure, strong electromagnetic fields are induced in its wake. For a 12 nC bunch of duration 4.2 ps FWHM, the peak field is measured >0.5 MV/m. Time resolution of approximately 5 ps is achieved using electro-optic sampling with a lithium tantalate (LiTaO3) crystal and a short-pulse infrared laser synchronized to the beam. We present measurements for both the longitudinal and radial components of the field and relate them to the wall impedance.
authors.affiliation: Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Fitch
authors.forename: A C
authors.initials: AC
authors.lastname: Melissinos
authors.forename: P L
authors.initials: PL
authors.lastname: Colestock
authors.forename: J P
authors.initials: JP
authors.lastname: Carneiro
authors.forename: H T
authors.initials: HT
authors.lastname: Edwards
authors.forename: W H
authors.initials: WH
authors.lastname: Hartung