The Algebraic Reconstruction Technique (ART)

TL;DR

The paper introduces the Algebraic Reconstruction Technique (ART), which uses three or more projections to reconstruct 3D beam density profiles, improving measurement detail and aiding in phase space analysis.

Contribution

The paper presents ART as a novel method for 3D beam profile reconstruction using multiple projections, enhancing measurement accuracy over traditional two-projection methods.

Findings

Improved 3D density profile reconstruction with ART

Application of ART at 200 MeV H- linac for beam analysis

Detection of coupling in x-y phase space

Abstract

Projections of charged particle beam current density (profiles) are frequently used as a measure of beam position and size. In conventional practice only two projections, usually horizontal and vertical, are measured. This puts a severe limit on the detail of information that can be achieved. A third projection provides a significant improvement. The Algebraic Reconstruction Technique (ART) uses three or more projections to reconstruct 3-dimensional density profiles. At the 200 MeV H- linac, we have used this technique to measure beam density, and it has proved very helpful, especially in helping determine if there is any coupling present in x-y phase space. We will present examples of measurements of current densities using this technique.