The Algebraic Reconstruction Technique (ART)

• DOI: ['10.48550/arxiv.physics/9709014', '10.1109/PAC.1997.751094', '10.1109/pac.1997.751094']
• Publication Date: 2002-11-22T23:31:05Z
• Authors: D. Raparia; J. Alessi; A. Kponou
• Keywords: 43 Particle Accelerators; Accelerator Physics (physics.acc-ph); 0301 basic medicine; 0303 health sciences; Projection Operators; FOS: Physical sciences; Ion Beams; 03 medical and health sciences; Beam Position; Physics - Accelerator Physics; Current Density; Algorithms

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.