Method and apparatus for tuning particle accelerators
AssigneeSiemens Medical Solutions USA, Inc.
InventorsSamy M. Hanna, Kenneth Whitman
Life of this patent
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Abstract
An improved method, system, and apparatus for tuning a particle accelerator is provided which includes tuning side cavities while placing adjancent cavities in a de-tuned condition. A conductor is positioned such that a primary cavity under test is minimally excited, while adjacent side cavities are excited. Coupled modes are measured. The primary cavity is tuned based on the measured coupled modes. According to the invention, this tuning is accomplished without use of access ports to the interior of the side cavities.
Claims20
A method for tuning a particle accelerator, comprising:
- tuning a first and a second side cavity while placing adjacent primary cavities in a de-tuned condition;
- measuring coupled modes resulting from interaction between said first and second side cavities and said primary cavity;
- and
- tuning said primary cavity based on said measured coupled modes.
A method for tuning a particle accelerator having a plurality of primary cavities disposed along a beam axis of said particle accelerator and a plurality of side cavities, said side cavities formed without access ports to an interior of said side cavities, the method comprising:
- iteratively tuning each of said side cavities while decoupling adjacent cavities, said tuning including measuring a resonant frequency of said side cavity and deforming said side cavity if said measured resonant frequency is not equal to a desired resonant frequency;
- and
- iteratively tuning each of said primary cavities while decoupling adjacent primary cavities, said tuning including exciting adjacent side cavities, measuring coupled modes, and calculating a resonant frequency of said primary cavity.
A tuning system for a particle accelerator, comprising:
- a first and a second primary cavity, disposed along a beam axis;
- a coaxial conductor movable along said beam axis through wall openings of said first and second primary cavities to place said second primary cavity in a de-tuned condition and to minimally excite said first primary cavity;
- a pair of side cavities, adjacent to said first primary cavity, and excited by said coaxial conductor;
- and
- a measurement device, coupled to said coaxial conductor, operative to measure coupled modes of said first primary cavities and said side cavities.
A system for tuning a particle accelerator, comprising:
- means for tuning a first and a second side cavity while placing adjacent cavities in a de-tuned condition;
- means for positioning a conductor along a beam axis to minimally excite a primary cavity and to excite said first and second side cavities;
- a measurement instrument for measuring coupled modes of said primary cavity and said side cavities;
- and
- means for tuning said primary cavity based on said measured coupled modes.
Dependencies are inferred from the claim text.