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Tune-stabilized, non-scaling, fixed-field, alternating gradient accelerator

United States Patent

February 1, 2011
View the Complete Patent at the US Patent & Trademark Office
Fermi National Accelerator Laboratory - Visit the Office of Research and Technology Applications Website
A FFAG is a particle accelerator having turning magnets with a linear field gradient for confinement and a large edge angle to compensate for acceleration. FODO cells contain focus magnets and defocus magnets that are specified by a number of parameters. A set of seven equations, called the FFAG equations relate the parameters to one another. A set of constraints, call the FFAG constraints, constrain the FFAG equations. Selecting a few parameters, such as injection momentum, extraction momentum, and drift distance reduces the number of unknown parameters to seven. Seven equations with seven unknowns can be solved to yield the values for all the parameters and to thereby fully specify a FFAG.
Johnstone; Carol J. (Warrenville, IL)
Universities Research Association, Inc. (Washington, DC)
11/ 801,183
May 8, 2007
STATEMENT OF GOVERNMENT INTEREST This invention was made with government support under Contract No. DE-AC02-76CH03000 awarded by the U.S. Department of Energy. The government has certain rights in the invention.