Phys. Rev. ST Accel. Beams 7, 060702 (2004) [12 pages]Experimental characterization of an ultrafast Thomson scattering x-ray source with three-dimensional time and frequency-domain analysis |
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W. J. Brown, S. G. Anderson, C. P. J. Barty, S. M. Betts, R. Booth, J. K. Crane, R. R. Cross, D. N. Fittinghoff, D. J. Gibson, F. V. Hartemann, E. P. Hartouni, J. Kuba, G. P. Le Sage, D. R. Slaughter, A. M. Tremaine, A. J. Wootton, and P. T. Springer
Lawrence Livermore National Laboratory, Livermore, California 94550, USA
J. B. Rosenzweig
Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90095, USA
Received 30 January 2004; published 11 June 2004
We present a detailed comparison of the measured characteristics of Thomson backscattered x rays produced at the Picosecond Laser-Electron Interaction for the Dynamic Evaluation of Structures facility at Lawrence Livermore National Laboratory to predicted results from a newly developed, fully three-dimensional time and frequency-domain code. Based on the relativistic differential cross section, this code has the capability to calculate time and space dependent spectra of the x-ray photons produced from linear Thomson scattering for both bandwidth-limited and chirped incident laser pulses. Spectral broadening of the scattered x-ray pulse resulting from the incident laser bandwidth, perpendicular wave vector components in the laser focus, and the transverse and longitudinal phase spaces of the electron beam are included. Electron beam energy, energy spread, and transverse phase space measurements of the electron beam at the interaction point are presented, and the corresponding predicted x-ray characteristics are determined. In addition, time-integrated measurements of the x rays produced from the interaction are presented and shown to agree well with the simulations.
©2004 The American Physical Society
URL: http://link.aps.org/abstract/PRSTAB/v7/e060702
DOI: 10.1103/PhysRevSTAB.7.060702
PACS: 41.60.–m, 52.59.–f, 41.75.–i, 52.38.–r
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