Longitudinal bunch-by-bunch feedback systems in storage rings: Phase vs. energy sensing

Bunch-by-bunch feedback (FB) systems are widely employed in charged-particle storage rings to suppress beam instabilities. In the longitudinal plane, the correction applied by a conventional FB system to the beam motion is an energy kick based on the signal originating from a time-of-arrival pick-up...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 1069; no. C; p. 169929
Main Author Venturini, Marco
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.12.2024
Elsevier
Subjects
Beam dynamics
Feedback system
Instabilities
Feedback system
Instabilities
Beam dynamics
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Summary:Bunch-by-bunch feedback (FB) systems are widely employed in charged-particle storage rings to suppress beam instabilities. In the longitudinal plane, the correction applied by a conventional FB system to the beam motion is an energy kick based on the signal originating from a time-of-arrival pick-up device (phase sensing). In this Note, we make a comparison with an alternate approach where the pick-up signal originates from the detection of the energy error. We show that for equal FB gain and input-impulse length the achievable damping rates in the two cases are essentially the same.
Bibliography:USDOE
DEAC02-05CH11231
ISSN:0168-9002
DOI:10.1016/j.nima.2024.169929