| Title |
Simultaneous Simulation of Multi-particle and Multi-bunch Collective Effects for the Aps Ultra-low Emittance Upgrade |
| Authors |
- M. Borland, T.G. Berenc, L. Emery, R.R. Lindberg
ANL, Argonne, Ilinois, USA
|
| Abstract |
Next-generation storage ring light sources promise dramatically lower emittance due to the use of multi-bend achromat (MBA) lattices. The strong magnets required for such lattices entail small magnet and vacuum bores, which increases concerns about collective instabilities. In this paper, we describe detailed simulations undertaken for the APS MBA lattice using the parallel version of ELEGANT. The simulations include short- and long-range geometric and resistive wakes, a beam-loaded main rf system including feedback, a passive harmonic bunch-lengthening cavity, higher-order cavity modes, and bunch-by-bunch feedback. Applications include insight into transients during filling, effects of missing bunches, evaluation of non-uniform fill patterns, and determination of feedback system requirements.
|
| Funding |
Work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. |
| Paper |
download WEBJI1.PDF [0.948 MB / 5 pages] |
| Slides |
download WEBJI1_TALK.PDF [1.413 MB] |
| Conference |
ICAP2015, Shanghai, China |
| Series |
International Computational Accelerator Physics Conference (12th) |
| Proceedings |
Link to full ICAP2015 Proccedings |
| Session |
APS Emittance Upgrade and LCLS/LCLS-II X-ray Self-seeding |
| Date |
14-Oct-15 10:45–12:05 |
| Main Classification |
B-1 Beam Dynamics Simulation |
| Keywords |
feedback, simulation, cavity, collective-effects, injection |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Kwok C. Ko (SLAC, Menlo Park, CA, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany); Chuanxiang Tang (Tsinghua University, Beijing, China); Heping Yan (SINAP, Shanghai, China) |
| ISBN |
978-3-95450-136-6 |
| Published |
February 2016 |
| Copyright |
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