• Open Access

Transverse phase space mapping of relativistic electron beams using optical transition radiation

G. P. Le Sage, T. E. Cowan, R. B. Fiorito, and D. W. Rule
Phys. Rev. ST Accel. Beams 2, 122802 – Published 20 December 1999; Erratum Phys. Rev. ST Accel. Beams 5, 059901 (2002)
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Abstract

Optical transition radiation (OTR) has proven to be a versatile and effective diagnostic for measuring the profile, divergence, and emittance of relativistic electron beams with a wide range of parameters. Diagnosis of the divergence of modern high brightness beams is especially well suited to OTR interference (OTRI) techniques, where multiple dielectric or metal foils are used to generate a spatially coherent interference pattern. Theoretical analysis of measured OTR and OTRI patterns allows precise measurement of electron beam emittance characteristics. Here we describe an extension of this technique to allow mapping of divergence characteristics as a function of transverse coordinates within a measured beam. We present the first experimental analysis of the transverse phase space of an electron beam using all optical techniques. Comparing an optically masked portion of the beam to the entire beam, we measure different angular spread and average direction of the particles. Direct measurement of the phase-space ellipse tilt angle has been demonstrated using this optical masking technique.

  • Received 8 September 1999

DOI:https://doi.org/10.1103/PhysRevSTAB.2.122802

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Erratum

Erratum: Transverse phase space mapping of relativistic electron beams using optical transition radiation[Phys. Rev. ST Accel. Beams 2, 122802 (1999)]

G. P. Le Sage, T. E. Cowan, R. B. Fiorito, and D. W. Rule
Phys. Rev. ST Accel. Beams 5, 059901 (2002)

Authors & Affiliations

G. P. Le Sage1, T. E. Cowan1, R. B. Fiorito2, and D. W. Rule3

  • 1Lawrence Livermore National Laboratory, Livermore, California 94550
  • 2Catholic University of America, Washington, D.C. 20064
  • 3Naval Surface Warfare Center, Carderock Division, West Bethesda, Maryland 20817

References

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Vol. 2, Iss. 12 —

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