Speaker
Description
The APS Upgrade (APS-U) storage ring delivers an electron beam with an exceptionally small transverse size, placing stringent requirements on source stability and, in particular, on control of the orbit motion. During the design phase, detailed estimates of expected orbit disturbances -- ground motion, magnet vibrations, and power-supply fluctuations -- were used to guide key machine-design decisions, including the choice to defer implementation of a fast orbit feedback system until after initial commissioning. Following completion of the storage ring commissioning, the measured orbit stability has been fairly consistent with predictions, while also revealing several unexpected behaviors. This paper presents a detailed characterization of the actual orbit stability achieved in APS-U and compares it with the pre-commissioning predictions.
Funding Agency
Work is supported by the U.S. Department of Energy, Office of Science, under Contract No. DEAC02-06CH11357
| In which format do you inted to submit your paper? | LaTeX |
|---|