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Distributed coupling high efficiency linear accelerator

United States Patent

9,398,681
July 19, 2016
View the Complete Patent at the US Patent & Trademark Office
SLAC National Accelerator Laboratory - Visit the Technology Transfer Website
A microwave circuit for a linear accelerator includes multiple monolithic metallic cell plates stacked upon each other so that the beam axis passes vertically through a central acceleration cavity of each plate. Each plate has a directional coupler with coupling arms. A first coupling slot couples the directional coupler to an adjacent directional coupler of an adjacent cell plate, and a second coupling slot couples the directional coupler to the central acceleration cavity. Each directional coupler also has an iris protrusion spaced from corners joining the arms, a convex rounded corner at a first corner joining the arms, and a corner protrusion at a second corner joining the arms.
Tantawi; Sami G. (Stanford, CA), Neilson; Jeffrey (Redwood City, CA)
The Board of Trustees of the Leland Stanford Junior University (Palo Alto, CA)
14/ 207,376
20140191654
March 12, 2014
STATEMENT OF GOVERNMENT SPONSORED SUPPORT This invention was made with Government support under contract DE-AC02-76SF00515 awarded by Department of Energy. The Government has certain rights in this invention.