DESIGN AND HIGH POWER PROCESSING OF RFQ INPUT POWER COUPLERS*

Conference · Mon Jan 01 04:00:00 EST 2007

DOI:https://doi.org/10.1109/PAC.2007.4441298· OSTI ID:931837

Kang, Yoon W ^[1]; Vassioutchenko, Alexandre V ^[1]; Aleksandrov, Alexander V ^[1]; Anderson, David E ^[1]; Champion, Mark ^[2]; Crofford, Mark T ^[1]; Gibson, Paul E ^[1]; Hardek, Thomas W ^[1]; Ladd, Peter ^[1]; McCarthy, Mike ^[1]; Stout, Daniel S ^[1]

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1. ORNL
2. FNAL

A RF power coupling system has been developed for future upgrade of input coupling of the RFQ in the SNS linac. The design employs two coaxial loop couplers for 402.5 MHz operation. Each loop is fed through a coaxial ceramic window that is connected to an output of a magic-T waveguide hybrid through a coaxial to waveguide transition. The coaxial loop couplers are designed, manufactured, and high power processed. Two couplers will be used in parallel to power the accelerating structure with up to total 800 kW peak power at 6% duty cycle. RF and mechanical properties of the couplers are discussed. Result of high power RF conditioning that is performed in the RF test facility of the SNS is presented.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931837
• Country of Publication: United States
• Language: English