Impedance of the PEP-II DIP screen
- Stanford Linear Accelerator Center, Menlo Park, CA (United States)
- Univ. of Technology, Darmstadt (Germany)
The vacuum chamber of a storage ring normally consists of periodically spaced pumping slots. The longitudinal impedance of slots are analyzed in this paper. It is found that although the broad-band impedance is tolerable, the narrow-band impedance, as a consequence of the periodicity of the slots, may exceed the stability limit given by natural damping with no feedback system on. Based on this analysis, the PEP-II distributed-ion-pump (DIP) screen uses long grooves with hidden holes cut halfway to reduce both the broad-band and narrow-band impedances.
- 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:
- 125108
- Report Number(s):
- SLAC-PUB--95-7005; CONF-9506279--2; ON: DE96001088
- Country of Publication:
- United States
- Language:
- English
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