| Title |
Phase Transients in the Higher-Harmonic RF Systems For the ALS-U Proposal |
| Authors |
- J.M. Byrd, S. De Santis, T.H. Luo, C. Steierpresenter
LBNL, Berkeley, California, USA
|
| Abstract |
The ALS upgrade proposal (ALS-U) requires lengthening the bunch by a factor of at least four in order to increase the beam lifetime to acceptable values. Due to the presence of gaps in the fill pattern, required by the injection/extraction kicker system, the beam-induced voltage in the passive, normal-conducting, cavities which we plan to use is not constant over the length of a bunch train. We present our result on the optimal tuning of the harmonic cavities to obtain the best lifetime increase, including the effects of strongly non-gaussian bunch shapes and wakefield distortions of the potential well.
|
| Funding |
This work was supported by the Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory under U.S. Department of Energy Contract No. DE-AC02-05CH11231. |
| Paper |
download WEPTY044.PDF [0.621 MB / 3 pages] |
| Export |
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| Conference |
IPAC2015, Richmond, VA, USA |
| Series |
International Particle Accelerator Conference (6th) |
| Proceedings |
Link to full IPAC2015 Proccedings |
| Session |
Wednesday Posters (Tyler) |
| Date |
06-May-15 16:00–18:00 |
| Main Classification |
7: Accelerator Technology |
| Sub Classification |
T06 - Room Temperature RF |
| Keywords |
simulation, experiment, impedance, beam-loading, synchrotron |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Stuart Henderson (ANL, Argonne, IL, USA); Evelyn Akers (Jlab, Newport News, VA, USA); Todd Satogata (JLab, Newport News, VA, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-168-7 |
| Published |
June 2015 |
| Copyright |
|
