Studies of the Electron Ring Dynamics in a Modified Betatron for Large Ring Displacements from the Minor Axis.
Abstract
A two dimensional 3V particle in cell (PIC) computer code is used to study the electron ring dynamics in a magnetic field configuration that is very similar to that of the modified betatron experiment. The electron ring dynamics has been simulated over approximately seventy five revolutions around the major axis, i.e., over several bounce periods. By comparing the electron ring dynamics in an idealized magnetic fields with that in the experiment, it has been determined that the field index spatial fluctuations that occur in the experiment are harmless to high current rings. In addition, the computer simulation results have confirmed our theoretical predictions concerning the variations of the ring's equilibrium position with the vertical field as well as the existence, in the ring centroid instability gap, of ring orbits having figure eight (8) shape. Keywords: High current accelerators; Modified Betatron: Computer simulation; Budker Parameter.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 29, 1987
- Accession Number
- ADA177417
Entities
People
- Chris A. Kapetanakos
- S. J. Marsh
Organizations
- United States Naval Research Laboratory