Overview of non-intercepting beam-size monitoring with optical diffraction radiation

TL;DR

This paper reviews recent progress in using optical diffraction radiation (ODR) as a non-intercepting method for monitoring electron beam sizes, focusing on imaging techniques, polarization effects, and future high-resolution applications.

Contribution

It provides a comprehensive overview of ODR-based beam monitoring techniques, including developments in imaging methods and a proposed approach for 10-micron beam size measurement at high energies.

Findings

Demonstrated effectiveness of ODR for non-intercepting beam diagnostics

Analyzed polarization effects and sensitivities to beam parameters

Proposed future method for high-resolution beam size monitoring

Abstract

The initial demonstrations over the last several years of the use of optical diffraction radiation (ODR) as non-intercepting electron-beam-parameter monitors are reviewed. Developments in both far-field imaging and near-field imaging are addressed for ODR generated by a metal plane with a slit aperture, a single metal plane, and two-plane interferences. Polarization effects and sensitivities to beam size, divergence, and position will be discussed as well as a proposed path towards monitoring 10-micron beam sizes at 25 GeV.