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Updated: May 19, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Observation of shot noise suppression at optical wavelengths in a relativistic electron beam
Daniel Ratner1, Gennady Stupakov
1SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
Abstract:
Control of collective properties of relativistic particles is increasingly important in modern accelerators. In particular, shot noise affects accelerator performance by driving instabilities or by competing with coherent processes. We present experimental observations of shot noise suppression in a relativistic beam at the Linac Coherent Light Source. By adjusting the dispersive strength of a chicane, we observe a decrease in the optical transition radiation emitted from a downstream foil. We show agreement between the experimental results, theoretical models, and 3D particle simulations.
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