Beam diagnostics based on time-domain bunch-by-bunch data
- Stanford Linear Accelerator Center P.O. Box 4349 Stanford, California 94309 (United States)
- INFN-Laboratori Nazionali di Frascati, P.O. Box 13 I-00044 Frascati (Roma) (Italy)
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road Berkeley, California 94563 (United States)
A bunch-by-bunch longitudinal feedback system has been used to control coupled-bunch longitudinal motion and study the behavior of the beam at ALS, SPEAR, PEP-II, and DA{Phi}NE. Each of these machines presents unique challenges to feedback control of unstable motion and data analysis. Here we present techniques developed to adapt this feedback system to operating conditions at these accelerators. A diverse array of techniques has been developed to extract information on different aspects of beam behavior from the time-domain data captured by the feedback system. These include measurements of growth and damping rates of coupled-bunch modes, bunch-by-bunch current monitoring, measurements of bunch-by-bunch synchronous phases and longitudinal tunes, and beam noise spectra. A technique is presented which uses the longitudinal feedback system to measure transverse growth and damping rates. Techniques are illustrated with data acquired at all of the four above-mentioned machines. {copyright} {ital 1998 American Institute of Physics.}
- Research Organization:
- Stanford Linear Accelerator Center
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 344458
- Report Number(s):
- CONF-980573--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 451; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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