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Updated: May 16, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Experimental observation of suppression of coherent-synchrotron-radiation-induced beam-energy spread with shielding
V Yakimenko1, M Fedurin, V Litvinenko
1Brookhaven National Laboratory, 820, Upton, New York 11973, USA.
Abstract:
We describe the first direct observation of the significant suppression of the energy spread induced by coherent synchrotron radiation by a pair of conductive plates placed inside a dipole magnet. In addition to various feedback loops improving the energy stability of the beam parameters, our key innovation for this experiment is the observation of the time-resolved energy variation within the electron bunch, instead of the traditionally measured rms energy spread. We present the results of the experiments and compare them with a rigorous analytical theory.
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