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RF kicker cavity to increase control in common transport lines

United States Patent

9,629,230
April 18, 2017
View the Complete Patent at the US Patent & Trademark Office
Thomas Jefferson National Accelerator Facility - Visit the Technology Review Committee Website
A method of controlling e-beam transport where electron bunches with different characteristics travel through the same beam pipe. An RF kicker cavity is added at the beginning of the common transport pipe or at various locations along the common transport path to achieve independent control of different bunch types. RF energy is applied by the kicker cavity kicks some portion of the electron bunches, separating the bunches in phase space to allow independent control via optics, or separating bunches into different beam pipes. The RF kicker cavity is operated at a specific frequency to enable kicking of different types of bunches in different directions. The phase of the cavity is set such that the selected type of bunch passes through the cavity when the RF field is at a node, leaving that type of bunch unaffected. Beam optics may be added downstream of the kicker cavity to cause a further separation in phase space.
Douglas; David R. (Yorktown, VA), Ament; Lucas J. P. (New York, NY)
JEFFERSON SCIENCE ASSOCIATES, LLC (Newport News, VA), ASML NETHERLANDS B.V. (Veldhoven, NL)
15/ 051,758
February 24, 2016
The United States Government may have certain rights to this invention under Management and Operating Contract No. DE-ACO5-06OR23177 from the Department of Energy.