Imaging , weakly - perturbing diagnostics of an x - ray beam at the LCLS facility ( physics issues )
نویسندگان
چکیده
Several approaches to the imaging of the x-ray beam cross-section in the LCLS facility have been proposed: deflecting a small part of the beam by a thin mirror; partial scattering from a thin, high-density gas jet, partial scattering from a thin solid foil. The general feature of all these diagnostics is that the imaging does not introduce significant perturbations to the beam. A set of design equations and constraints is provided.
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