Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
First Claim
1. An apparatus for tumor therapy using charged particles, the charged particles accelerated by a rounded corner polygon synchrotron, said synchrotron comprising:
- a center; and
a charged particle circulation beam path running;
about said center;
through straight sections; and
through turning sections,wherein each of said turning sections comprise at least four bending magnets, said four bending magnets comprising at least eight edge focusing surfaces,wherein said circulation beam path comprises a length of less than sixty meters, andwherein a number of said straight sections equals a number of said turning sections.
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Abstract
The invention comprises a charged particle beam acceleration and/or extraction 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, 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
21 Claims
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1. An apparatus for tumor therapy using charged particles, the charged particles accelerated by a rounded corner polygon synchrotron, said synchrotron comprising:
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a center; and a charged particle circulation beam path running; about said center; through straight sections; and through turning sections, wherein each of said turning sections comprise at least four bending magnets, said four bending magnets comprising at least eight edge focusing surfaces, wherein said circulation beam path comprises a length of less than sixty meters, and wherein a number of said straight sections equals a number of said turning sections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for tumor therapy using charged particles, the charged particles accelerated by a rounded corner synchrotron, said method comprising the step of:
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accelerating the charged particles in a charged particle circulation beam path running about a center of said synchrotron, said charged particle circulation beam path comprising; straight sections; and turning sections, wherein said turning sections each comprise at least four bending magnets, said four bending magnets comprising at least eight surfaces having focusing geometry, wherein said circulation beam path comprises a length of less than sixty meters, and wherein a number of said straight sections equals a number of said turning sections. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification