Electro-optic Measurement of the Wake Fields of a Relativistic Electron Beam

M. J. Fitch, A. C. Melissinos, P. L. Colestock, J.-P. Carneiro, H. T. Edwards, and W. H. Hartung
Phys. Rev. Lett. 87, 034801 – Published 26 June 2001
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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 >0.5MV/m. Time resolution of 5ps 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.

  • Received 2 March 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.034801

©2001 American Physical Society

Authors & Affiliations

M. J. Fitch* and A. C. Melissinos

  • Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627

P. L. Colestock, J.-P. Carneiro, H. T. Edwards, and W. H. Hartung§

  • Fermi National Accelerator Laboratory, Batavia, Illinois 60510

  • *Present address: Institute of Optics, University of Rochester, Rochester, NY 14627.
  • Present address: Los Alamos National Laboratory, Los Alamos, NM 87545.
  • Present address: Université Paris Sud F-91405 Orsay, France.
  • §Present address: NSCL/Cyclotron Lab Michigan State University, East Lansing, Michigan 48824.

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Vol. 87, Iss. 3 — 16 July 2001

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