IPAC2016 - List of Authors (Sheppard, J.)

Paper	Title	Page
MOPMW043	Overview of High Power Vacuum Dry RF Load Designs	504
	A.K. Krasnykh, A. Brachmann, F.-J. Decker, T.J. Maxwell, J. Sheppard SLAC, Menlo Park, California, USA
	Funding: Work supported by US Department of Energy under contract DE-AC02-76SF00515 A specific feature of RF linacs based on the pulsed traveling wave (TW) mode of operation is that only a portion of the RF energy is used for the beam acceleration. The residual RF energy has to be terminated into an RF load. Higher accelerating gradients require higher RF sources and RF loads, which can stably terminate the residual RF power. This overview will outline vacuumed RF loads only. A common method to terminate multi-MW RF power is to use circulated water (or other liquid) as an absorbing medium. A solid dielectric interface (a high quality ceramic) is required to separate vacuum and liquid RF absorber mediums. Using such RF load approaches in TW linacs is troubling because there is a fragile ceramic window barrier and a failure could become catastrophic for linac vacuum and RF systems. Traditional loads comprising of a ceramic disk have limited peak and average power handling capability and are therefore not suitable for high gradient TW linacs. This overview will focus on 'vacuum dry' or 'all-metal' loads that do not employ any dielectric interface between vacuum and absorber. The first prototype is an original design of RF loads for the Stanford Two-Mile Accelerator.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMW043
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Paper

Title

Page

Overview of High Power Vacuum Dry RF Load Designs

504

A.K. Krasnykh, A. Brachmann, F.-J. Decker, T.J. Maxwell, J. Sheppard
SLAC, Menlo Park, California, USA

Funding: Work supported by US Department of Energy under contract DE-AC02-76SF00515
A specific feature of RF linacs based on the pulsed traveling wave (TW) mode of operation is that only a portion of the RF energy is used for the beam acceleration. The residual RF energy has to be terminated into an RF load. Higher accelerating gradients require higher RF sources and RF loads, which can stably terminate the residual RF power. This overview will outline vacuumed RF loads only. A common method to terminate multi-MW RF power is to use circulated water (or other liquid) as an absorbing medium. A solid dielectric interface (a high quality ceramic) is required to separate vacuum and liquid RF absorber mediums. Using such RF load approaches in TW linacs is troubling because there is a fragile ceramic window barrier and a failure could become catastrophic for linac vacuum and RF systems. Traditional loads comprising of a ceramic disk have limited peak and average power handling capability and are therefore not suitable for high gradient TW linacs. This overview will focus on 'vacuum dry' or 'all-metal' loads that do not employ any dielectric interface between vacuum and absorber. The first prototype is an original design of RF loads for the Stanford Two-Mile Accelerator.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMW043

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)