Accelerator Physics Measurements at the Damping Ring

Besides the optics measurements described elsewhere, machine experiments were done at the SLC damping ring to determine some of its parameters. The synchrotron radiation energy loss which gives the damping rates was measured by observing the RF-voltage dependence of the synchronous phase angle. The...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1985-10, Vol.32 (5), p.2626-2628
Main Authors: Rivkin, L., Delahaye, J. P., Wille, K., Allen, M., Bane, K., Fieguth, T., Hofmann, A., Hutton, A., Lee, M., Linebarger, W., Morton, P., Ross, M., Ruth, R., Schwarz, H., Seeman, J., Sheppard, J., Stiening, R., Wilson, P., Woodley, M.
Format: Article
Language:English
Subjects:
Damping
Energy loss
Energy measurement
Frequency estimation
Loss measurement
Phase measurement
Physics
Size measurement
Stimulated emission
Synchrotron radiation
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Summary:Besides the optics measurements described elsewhere, machine experiments were done at the SLC damping ring to determine some of its parameters. The synchrotron radiation energy loss which gives the damping rates was measured by observing the RF-voltage dependence of the synchronous phase angle. The emittance was obtained from the synchrotron light monitor, scraper measurements and by extracting the beam through a doublet and measuring its size for different quadrupole settings. Current dependent effects such as parasitic mode losses, head tail instabilities, synchrotron and betatron frequency shifts were measured to estimate the impedance. RF-cavity beam loading and its compensation were also studied and ion collection was investigated. All results agree reasonably well with expectations and indicate no limitations to the design performance.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.1985.4334002