An 805 MHz Disk and Washer Accelerating Structure with Coaxial Coupler for the Fermilab Upgrade

Technical Report · Wed Nov 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/1847363· OSTI ID:1847363

Young, D. E. ^[1]; Moretti, A. ^[1]; Lee, G. ^[1]; Mills, Frederick E. ^[1]; Zhou, P. ^[1]; Swenson, D. A. ^[2]; Young, P. E. ^[2]

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1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
2. Science Applications International Corporation, Albuquerque, NM (United States)

The Disk and Washer (DAW) structure with four biperiodic tees to support the washers has been studied at Fermilab for the Linac Upgrade by constructing two, 805 MHz, one-meter sections joined by a coaxial coupler. The coupler provides an rf drive port, an adjustable tuner, a vacuum port, and an enclosure for the installation of beam focussing and monitoring devices. This configuration is suitable for a high beta proton linear accelerator. The bi-periodic tee supports in the DAW structure suppress the TM₁₁ mode at the operating frequency which has been a problem with previous designs. Frequency-mode spectra have been calculated and measured as well as the quantities Q, R/Q, and ZT². The structure has been evacuated and operated at high power levels and high accelerating fields.

• 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: 1847363
• Report Number(s): FERMILAB-LU-154; oai:inspirehep.net:293141
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
97 MATHEMATICS AND COMPUTING