Comparison Between a Lossy Magnetic Absorber and a Lossy Electric Absorber
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
For the 4-8 GHz Debuncher Upgrade, attenuation of the microwave modes in the beam pipe is very important. So far most of the studies in microwave mode absorbers have been involved with lossy magnetic absorber. (Most notably Emerson & Cuming MF190.) Lossy magnetic absorber has been chosen for aperture reasons. This is because electric fields are weak and magnetic fields are strong at the beam pipe walls. However, most lossy magnetic absorbers are not well suited for high vacuum situations especially when subjected to high RF power in stochastic cooling kickers. It will be shown in this note that a lossy electric absorber with a large dielectric constant can achieve high attenuation constants but at a reduced bandwidth.
- 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:
- 1974008
- Report Number(s):
- FERMILAB-PBAR-NOTE--584; oai:inspirehep.net:862802
- Country of Publication:
- United States
- Language:
- English
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