DocumentCode
847515
Title
Observation of Beam-Beam Effects in PETRA
Author
Piwinski, A.
Author_Institution
Deutsches Elektronen-Synchrotron DESY Hamburg, Germany
Volume
26
Issue
3
fYear
1979
fDate
6/1/1979 12:00:00 AM
Firstpage
4267
Lastpage
4270
Abstract
The limitation of beam currents in PETRA by the beam-beam effect is investigated. The horizontal and vertical betatron frequency shifts ¿Q are measured as a function of bunch currents for different operating conditions. The direct measurement of ¿Q by coherent excitation of the eigenmodes of the coupled betatron oscillations of the bunches is described. This method allows to determine independently the horizontal and vertical beam dimensions at the interaction point.
Keywords
Current measurement; Electrons; Electrostatics; Flip-flops; Frequency measurement; Monitoring; Resonance; Resonant frequency; Space charge; TV;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1979.4330764
Filename
4330764
Link To Document