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Bunch stabilization using rf phase modulation in the intense pulse neutron source (IPNS) rapid cycling synchrotron (RCS)

Journal Article · · AIP Conference Proceedings
DOI:https://doi.org/10.1063/1.1301901· OSTI ID:21207654
; ;  [1]
  1. Argonne National Laboratory, Argonne, Illinois (United States)
Phase modulation (PM) is used to increase the current limit in the IPNS RCS. A device referred to as a scrambler introduces a small oscillating phase between the two RCS rf cavities at approximately twice the synchrotron frequency, f{sub s}. The modulation introduced by the scrambler generates longitudinal oscillations in the bunch at 2f{sub s}. Modulations in the bunch are also observed transversely indicating a coupling between longitudinal and transverse motion. Comparing PM with amplitude modulation (AM), coupling to the beam is roughly equivalent at 2f{sub s}.
OSTI ID:
21207654
Journal Information:
AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 496; ISSN APCPCS; ISSN 0094-243X
Country of Publication:
United States
Language:
English