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Hertle E.,Karlsruhe Institute of Technology | Hiller N.,Karlsruhe Institute of Technology | Huttel E.,Karlsruhe Institute of Technology | Kehrer B.,Karlsruhe Institute of Technology | And 4 more authors.
IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference | Year: 2014

A new digital three dimensional fast bunch-by-bunch feedback system has been installed and commissioned at ANKA. Immediate improvements to stored current and lifetime were achieved for normal user operation. For this, the feedback has to be running during the injection and the energy ramp to 2.5 GeV. Additionally, the feedback system was also incorporated into the diagnostic tool-set at ANKA and opened up new possibilities of automated and continuous measurement of certain beam parameters. The system can operate in different modes such as the low alpha operation mode, which has different requirements on the feedback system compared to normal user operation. Results on the various aspects will be presented as well as future improvements. Copyright © 2014 CC-BY-3.0 and by the respective authors. Source


Honer M.,Center for Synchrotron Radiation | Hilbrich S.,Center for Synchrotron Radiation | Huck H.,Center for Synchrotron Radiation | Huck M.,Center for Synchrotron Radiation | And 7 more authors.
IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference | Year: 2014

At the 1.5-GeV electron storage ring DELTA operated by the TU Dortmund University as a synchrotron radiation user facility, bunch-by-bunch feedback systems are in use for electron beam diagnostics and for the suppression of multibunch instabilities. An automatic readout of bunch position data allows a real-time modal analysis during machine operation. An excitation of particular multibunch modes enables the determination of growth and damping times for all modes independently. Further investigations of beam stability and natural damping times of all modes even below the instability threshold have been performed. In addition, first bunch-by-bunch data taken from the booster synchrotron are shown. Copyright © 2014 CC-BY-3.0 and by the respective authors. Source

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