MAGNETIC FIELD CONTROL METHOD AND APPARATUS USED IN CONJUNCTION WITH A CHARGED PARTICLE CANCER THERAPY SYSTEM
First Claim
1. An apparatus for acceleration of charged particles in a charged particle beam path, comprising:
- a pair of magnets;
a first foil magnetic penetration layer, said foil magnetic penetration layer less than about one-tenth of a millimeter thickness, said penetration layer comprising a first side and a second side, said second side of said foil comprising a surface roughness of less than about three microns; and
said charged particle beam path running through a gap between said pair of magnets,wherein a first magnet of said pair of magnets comprises a gap surface, said gap surface coplanar with said first side of said foil, said second side of said foil proximate said gap.
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Accused Products
Abstract
The invention comprises a charged particle beam acceleration, extraction, and/or targeting method and apparatus used in conjunction with charged particle beam radiation therapy of cancerous tumors. Novel design features of a synchrotron are described. Particularly, turning magnets, edge focusing magnets, concentrating magnetic field magnets, winding and control coils, flat surface incident magnetic field surfaces, and extraction elements are described that minimize the overall size of the synchrotron, provide a tightly controlled proton beam, directly reduce the size of required magnetic fields, directly reduces required operating power, and allow continual acceleration of protons in a synchrotron even during a process of extracting protons from the synchrotron.
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Citations
5 Claims
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1. An apparatus for acceleration of charged particles in a charged particle beam path, comprising:
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a pair of magnets; a first foil magnetic penetration layer, said foil magnetic penetration layer less than about one-tenth of a millimeter thickness, said penetration layer comprising a first side and a second side, said second side of said foil comprising a surface roughness of less than about three microns; and said charged particle beam path running through a gap between said pair of magnets, wherein a first magnet of said pair of magnets comprises a gap surface, said gap surface coplanar with said first side of said foil, said second side of said foil proximate said gap. - View Dependent Claims (2, 3, 4, 5)
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Specification