Attenuation of Waveguide Modes with Multi-Layer Absorbing Walls

Technical Report · Wed Jul 15 00:00:00 EDT 1998

DOI:https://doi.org/10.2172/1967379· OSTI ID:1967379

McGinnis, Dave ^[1]

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1. Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Microwave modes in the beam pipe of the 4-8 GHz Debuncher Upgrade pickup and kicker arrays are attenuated with absorbing slabs placed on the sides of the beam pipe walls. Adding an additional layer of material with different microwave properties behind the absorbing slab can enhance the attenuation of the absorber. This note describes how to calculate the attenuation of rectangular waveguide modes with multi-layer absorbers placed on the top and side walls of the waveguide.

• 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: 1967379
• Report Number(s): FERMILAB-PBAR-NOTE-596; oai:inspirehep.net:863236; TRN: US2403209
• Country of Publication: United States
• Language: English

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