Published February 1994 | Version v1
Journal article

Effects of the synchro-betatron coupling induced by dipole-field modulation

  • 1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
  • 2. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)
  • 3. Fermilab, P.O. Box 500, Batavia, Illinois 60510 (United States)
  • 4. Stanford Linear Accelerator Center, MS26, Box 4349, Stanford, California 94309 (United States)
  • 5. The SSC Laboratory, 2550 Beckleymeade Avenue, Dallas, Texas 75237-3946 (United States)
  • 6. Indiana University Cyclotron Facility, Indiana University, Bloomington, Indiana 47405 (United States)

Description

The synchro-betatron coupling induced by modulating a transverse dipole field at a frequency close to the synchrotron frequency was studied experimentally. The combination of the electron cooling and transverse-field modulation on the synchrotron oscillation is equivalent to a dissipative parametric resonant system. Six-dimensional Poincare maps were measured at ten-turn intervals. The proton bunch was observed to split longitudinally into two pieces, or beamlets, converging toward attractors of the dissipative system within a rf bucket. Based on our experimental results, the effects of ground vibration on the superconducting supercollider beam and the effects of power-supply ripple on the relativistic heavy-ion collider beam are examined

Additional details

Publishing Information

Journal Title
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Journal Volume
49
Journal Issue
2
Journal Page Range
p. 1610-1623.
ISSN
1063-651X
CODEN
PLEEE8