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Phys. Rev. ST Accel. Beams 3, 030701 (2000) [9 pages]

Coherent off-axis undulator radiation from short electron bunches

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C. P. Neuman
Free-Electron Laser Laboratory, Duke University, Durham, North Carolina 27708

W. S. Graves
Brookhaven National Laboratory, Upton, New York 11973-5000

P. G. O'Shea
Institute of Plasma Research, Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742

Received 29 September 1999; published 10 March 2000

The nature of off-axis undulator radiation is discussed. Of particular interest is coherent off-axis radiation, where the wavelengths of emission are longer than the electron bunch length. We show how this off-axis radiation may be used to measure relative electron bunch lengths. The theory is presented, and calculated spectra are presented in a number of cases of interest.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.3.030701
DOI: 10.1103/PhysRevSTAB.3.030701
PACS: 29.27.Fh, 29.17.+w, 41.60.Cr

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