Published 1993
| Version v1
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Higher-order modes in the APS storage ring waveguides
Description
Twelve higher-order modes (HOMs) in the single-cell accelerating cavities for the Advanced Photon Source (APS) storage ring were calculated to have complex impedances that will cause coupled-bunched instabilities near or below the 300mA positron current which is the design goal. Some of these modes couple, through the coupling loop, from the storage ring cavity into the waveguide. This study investigates the transmission of these modes from the cavity into the waveguide. The standing wave ratio (VSWR) of a WR2300 hybrid waveguide component has been measured at each HOM frequency, and its effect on the transmitted modes in the waveguide is studied
Availability note (English)
MF available from INIS under the Report Number; Also available from OSTI as DE93017702; NTIS; US Govt. Printing Office Dep.Files
25010294.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 4 p.
- Report number
- ANL/ASD/CP--78346
Conference
- Title
- International particle accelerator conference.
- Dates
- 17-20 May 1993.
- Place
- Washington, DC (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25010294
- Subject category
- S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ADVANCED PHOTON SOURCE; BEAM BUNCHING; IMPEDANCE; INSTABILITY; OSCILLATION MODES; WAVEGUIDES
- Descriptors DEC
- BEAM DYNAMICS; DYNAMICS; MECHANICS; RADIATION SOURCES; STORAGE RINGS; SYNCHROTRON RADIATION SOURCES
Optional Information
- Contract/Grant/Project number
- Contract W-31109-ENG-38
- Funding organization
- USDOE, Washington, DC (United States).
- Secondary number(s)
- CONF-930511--312.