The Effect of Sidebar Absorbers on the Frequency Response of Slow Wave Kickers
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
The slow wave pickups and kicker used in the 4-8 GHz Debuncher Upgrade are based on the principle of slowing the phase velocity of the waveguide modes in the beam-pipe and input/output waveguides to match the velocity of the beam. The pickups and kickers will be used for transverse and longitudinal cooling simultaneously. In the transverse mode, the phase between opposing input/output waveguides is 180 degrees. This results in the tangential electric field at the mid-plane of the beam-pipe aperture to vanish. This mid-plane can then be replaced with a virtual perfect electric conductor and only half the problem needs to be analyzed. (The dotted line can be replaced with a perfect electric conductor.) In this case, the field patterns of the fundamental mode in both the half beam-pipe and input/output waveguide are the same. If the transverse size (the x direction) of the beam-pipe and the waveguide is not too different, the phase velocities of the fundamental modes will be similar.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1974006
- Report Number(s):
- FERMILAB-PBAR-NOTE-591; oai:inspirehep.net:862795; TRN: US2403448
- Country of Publication:
- United States
- Language:
- English
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