CERN Accelerating science

Article
Title	High Power RF Test Facility at the SNS
Author(s)	Kang, Yoon W ; Anderson, David E ; Campisi, Isidoro E ; Champion, Mark ; Crofford, Mark ; Davis, Kirk ; Drury, Michael A ; Fuja, Ray E ; Gurd, Pamela ; Kasemir, Kay-Uwe ; McCarthy, Michael P ; Powers, Tom ; Shajedul Hasan, S M ; Stirbet, Mircea ; Stout, Daniel ; Tang, Johnny Y ; Vassioutchenko, Alexandre V ; Wezensky, Mark
Affiliation	(Jefferson Lab, Newport News, Virginia) ; (ORNL, Oak Ridge, Tennessee) ; (ORNL/ASD, Oak Ridge, Tennessee) ; (ORNL/SNS, Oak Ridge, Tennessee)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3450
Subject category	Accelerators and Storage Rings
Abstract	RF Test Facility has been completed in the SNS project at ORNL to support test and conditioning operation of RF subsystems and components. The system consists of two transmitters for two klystrons powered by a common high voltage pulsed converter modulator that can provide power to two independent RF systems. The waveguides are configured with WR2100 and WR1150 sizes for presently used frequencies: 402.5 MHz and 805 MHz. Both 402.5 MHz and 805 MHz systems have circulator protected klystrons that can be powered by the modulator capable of delivering 11 MW peak and 1 MW average power. The facility has been equipped with computer control for various RF processing and complete dual frequency operation. More than forty 805 MHz fundamental power couplers for the SNS superconducting linac (SCL) cavitites have been RF conditioned in this facility. The facility provides more than 1000 ft2 floor area for various test setups. The facility also has a shielded cave area that can support high power tests of normal conducting and superconducting accelerating cavities and components.