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High-intensity single bunch instability behavior in the new SLC damping ring vacuum chamber

Conference ·
OSTI ID:89529
New low-impedance vacuum chambers were installed in the SLC damping rings for the 1994 run after finding a single bunch instability with the old chamber. Although the threshold is lower with the new vacuum chamber, the instability is less severe, and we are now routinely operating at intensities of 4.5 {times} 10{sup 10} particles per bunch (ppb) compared to 3 {times} 10{sup 10} ppb in 1993. The vacuum chamber upgrade is described, and measurements of the bunch length, energy spread, and frequency and time domain signatures of the instability are presented.
Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
89529
Report Number(s):
SLAC-PUB--95-6894; CONF-950512--252; ON: DE95013397
Country of Publication:
United States
Language:
English

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