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Updated: Feb 6, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
First Six Dimensional Phase Space Measurement of an Accelerator Beam
Brandon Cathey1, Sarah Cousineau1, Alexander Aleksandrov2
1Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37966, USA.
Abstract:
This Letter presents the first complete six dimensional phase space measurement of a beam in an accelerator. The measurement was made on the Spallation Neutron Source Beam Test Facility. The data reveal previously unknown correlations in the six dimensional phase space distribution that are not visible in lower dimensionality measurements. The correlations are shown to be intensity dependent.
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