| Title |
Impedance Characterization and Collective Effects in the MAX IV 3 GeV Ring |
| Authors |
- G. Skripka, Å. Andersson, P.F. Tavares
MAX IV Laboratory, Lund University, Lund, Sweden
- F.J. Cullinanpresenter, R. Nagaoka
SOLEIL, Gif-sur-Yvette, France
|
| Abstract |
Collective instabilities in the MAX IV 3 GeV storage ring are enhanced by the combination of high beam current, ultralow emittance and small vacuum chamber aperture. To mitigate instabilities by Landau damping and improve lifetime three passive harmonic cavities are installed to introduce synchrotron tune spread and bunch lengthening respectively. We present the results of studies of collective effects driven by the machine impedance. Bunch lengthening and detuning were measured to characterize the effective impedance and estimate the effect of the harmonic cavity potential. Investigations of collective effects as a function of parameters such as beam current and chromaticity are discussed.
|
| Paper |
download WEA3CO04.PDF [0.372 MB / 4 pages] |
| Slides |
download WEA3CO04_TALK.PDF [3.845 MB] |
| Export |
download ※ BibTeX
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※ EndNote |
| Conference |
NAPAC2016, Chicago, IL, USA |
| Series |
North American Particle Accelerator Conference (3rd) |
| Proceedings |
Link to full NAPAC2016 Proccedings |
| Session |
Oral Presentations (MC5) |
| Date |
12-Oct-16 14:00–15:30 |
| Main Classification |
5: Beam Dynamics and EM Fields |
| Sub Classification |
D06 - Coherent and Incoherent Instabilities - Measurements and Countermeasures |
| Keywords |
ion, impedance, synchrotron, feedback, experiment |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Volker RW Schaa (GSI, Darmstadt, Germany); Maria Power (ANL, Argonne, IL, USA); Vladimir Shiltsev (FNAL, Batavia, IL, USA); Marion White (ANL, Argonne, IL, USA) |
| ISBN |
978-3-95450-180-9 |
| Published |
January 2017 |
| Copyright |
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