Tuning of the first 805 MHz side-coupled cavity module for the Fermilab upgrade

Zubao Qian, Mark Champion, Thomas G. Jurgens, Harold W. Miller, Alfred Moretti, Rene Padilla

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Module 1 side-coupled cavity with bridge couplers was given its final tuning during April 1990 in the low-level RF tuning lab. The π/2 frequency with power iris cut is 805.001 MHz. The stop band is +246 kHz. Driven at the waveguide port, the reflected power is -45 db (VSWR = 1.01). The loaded Q is 9544. The individual cell field rms deviation from average in each section is less than 1%. The average field in each section agrees with the theoretical value calculated. The peak field decreases 0.5% over the module length due to gap spacing as β increases. The four sections were checked at a single temperature (keeping the π/2 frequency constant). The field tilt from R1 end to R4 end was 5%.

Original languageEnglish
Title of host publicationConference Record of 1991 IEEE Particle Accelerator Conference
PublisherPubl by IEEE
Pages2996-2998
Number of pages3
ISBN (Print)0780301358
StatePublished - 1991
EventConference Record of 1991 IEEE Particle Accelerator Conference Part 5 (of 5) - San Francisco, CA, USA
Duration: May 6 1991May 9 1991

Publication series

NameConference Record of 1991 IEEE Particle Accelerator Conference

Conference

ConferenceConference Record of 1991 IEEE Particle Accelerator Conference Part 5 (of 5)
CitySan Francisco, CA, USA
Period05/6/9105/9/91

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