| Title |
Compensation of Insertion Device Induced Emittance Variations in Ultralow Emittance Storage Rings |
| Authors |
- F. Sannibale, S.C. Leemann, H. Nishimura, D. Robin, C. Steier, C. Sun, M. Venturini
LBNL, Berkeley, California, USA
|
| Abstract |
With the advent of multi-bend achromat lattices, extremely low emittances are to become the norm in storage ring-based X-ray photon sources. In these lattices, the ratio of beam energy lost to radiation in the Insertion Devices (IDs) to the overall beam energy loss is relatively larger than in 3rd generation light sources. As a result, these machines are more sensitive to the energy loss variations occurring as the users operate variable-gap IDs and to the concurrent variations in radiation damping time, equilibrium emittance, and ultimately transverse properties of the beam. With possibly tens of variable gap IDs continuously and independently varying their gaps to meet the experiment needs, the resulting variation in emittance and beam sizes can be significant and can jeopardize the experimental performance in some of the beamlines. In this paper we describe and discuss possible methods for compensating such emittance variations and maintaining constant transverse beam properties for the experiments.
|
| Funding |
Work supported by the Director of the Office of Science of the US Department of Energy under Contract no. DEAC02-05CH11231. |
| Paper |
download WEXGBE2.PDF [1.112 MB / 4 pages] |
| Slides |
download WEXGBE2_TALK.PDF [4.543 MB] |
| Export |
download ※ BibTeX
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※ EndNote |
| Conference |
IPAC2018, Vancouver, BC, Canada |
| Series |
International Particle Accelerator Conference (9th) |
| Proceedings |
Link to full IPAC2018 Proccedings |
| Session |
MC5 Orals |
| Date |
02-May-18 09:00–10:30 |
| Main Classification |
05 Beam Dynamics and EM Fields |
| Sub Classification |
D09 Emittance Manipulation, Bunch Compression and Cooling |
| Keywords |
emittance, wiggler, lattice, electron, photon |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editors |
Shane Koscielniak (TRIUMF, Vancouver, BC, Canada); Todd Satogata (JLab, Newport News, VA, USA); Volker RW Schaa (GSI, Darmstadt, Germany); Jana Thomson (TRIUMF, Vancouver, BC, Canada) |
| ISBN |
978-3-95450-184-7 |
| Published |
June 2018 |
| Copyright |
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