Gantry for medical particle therapy facility
First Claim
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1. A particle therapy gantry for delivering a particle beam to a patient comprising:
- beam tube having a curvature defining a particle beam path; and
a plurality of fixed field magnets sequentially arranged along said beam tube for guiding the particle beam along said particle path wherein each of said fixed field magnets is a combined function magnet performing a first function of bending the particle beam along said particle path and a second function of focusing or defocusing the particle beam, and wherein said combined function fixed field magnets are arranged in triplets, each triplet comprising two focusing magnets and a defocusing magnet disposed between said focusing magnets, said focusing magnets performing the combined function of bending the particle beam and focusing the particle beam and said defocusing magnet performing the combined function of bending the particle beam and defocusing the particle beam.
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Abstract
A particle therapy gantry for delivering a particle beam to a patient includes a beam tube having a curvature defining a particle beam path and a plurality of fixed field magnets sequentially arranged along the beam tube for guiding the particle beam along the particle path. In a method for delivering a particle beam to a patient through a gantry, a particle beam is guided by a plurality of fixed field magnets sequentially arranged along a beam tube of the gantry and the beam is alternately focused and defocused with alternately arranged combined function focusing and defocusing fixed field magnets.
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Citations
16 Claims
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1. A particle therapy gantry for delivering a particle beam to a patient comprising:
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beam tube having a curvature defining a particle beam path; and a plurality of fixed field magnets sequentially arranged along said beam tube for guiding the particle beam along said particle path wherein each of said fixed field magnets is a combined function magnet performing a first function of bending the particle beam along said particle path and a second function of focusing or defocusing the particle beam, and wherein said combined function fixed field magnets are arranged in triplets, each triplet comprising two focusing magnets and a defocusing magnet disposed between said focusing magnets, said focusing magnets performing the combined function of bending the particle beam and focusing the particle beam and said defocusing magnet performing the combined function of bending the particle beam and defocusing the particle beam. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for delivering a particle beam to a patient through a gantry comprising the steps of:
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bending the particle beam with a plurality of fixed field magnets sequentially arranged along a beam tube of the gantry, the particle beam traveling in said beam tube; alternately focusing and defocusing the particle beam traveling in said beam tube with alternately arranged combined function focusing and defocusing fixed field magnets; and delivering said particle beam from said gantry to a patient, wherein said beam is strongly focused in both the horizontal and vertical planes, wherein said combined function fixed field magnets are arranged in triplets, each triplet comprising two focusing magnets and a defocusing magnet disposed between said focusing magnets, said focusing magnets performing the combined function of bending the particle beam and focusing the particle beam and said defocusing magnet performing the combined function of bending the particle beam and defocusing the particle beam. - View Dependent Claims (9)
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10. A particle beam therapy system comprising:
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a source of particles; an accelerator for accelerating the particles as a particle beam; an injector for transporting particles from said source to said accelerator; a patient treatment station including a rotatable gantry for delivering a particle beam to a patient, said gantry including a beam tube having a curvature defining a particle beam path and a plurality of fixed field magnets sequentially arranged along said beam tube for guiding the particle beam along said particle path; and a beam transport system for transporting the accelerated beam from said accelerator to said patient treatment station, wherein each of said fixed field magnets of said gantry is a combined function magnet performing a first function of bending the particle beam along said particle path and a second function of focusing or defocusing the particle beam, and wherein said combined function fixed field magnets of said gantry are arranged in triplets, each triplet comprising two focusing magnets and a defocusing magnet disposed between said focusing magnets, said focusing magnets performing the combined function of bending the particle beam and focusing the particle beam and said defocusing magnet performing the combined function of bending the particle beam and defocusing the particle beam. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification