Synchrotron and particle therapy system using the same
First Claim
1. A synchrotron that accelerates and decelerates a charged particle beam that circulates in the synchrotron, comprising:
- a first extraction deflector and a second extraction deflector that are used to extract the accelerated or decelerated beam from the synchrotron;
a plurality of deflection magnets and a first single quadrupole magnet that are arranged between the first and second extraction deflectors, the first single quadrupole magnet being arranged between any deflection magnets among the plurality of deflection magnets;
a second quadrupole magnet that is arranged on the upstream side of the first extraction deflector in a traveling direction of the charged particle beam on a path of the circulating charged particle beam; and
a third quadrupole magnet that is arranged on the downstream side of the second extraction deflector in the traveling direction of the charged particle beam on the path of the circulating charged particle beam.
1 Assignment
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Accused Products
Abstract
Disclosed herein are provided an arrangement of devices suitable to downsize a synchrotron, a synchrotron using such an arrangement, and a particle therapy system using the synchrotron. In the synchrotron, a plurality of deflection magnets and a single defocusing quadrupole magnet are arranged between a first extraction deflector and a second extraction deflector. The defocusing quadrupole magnet is arranged between deflection magnets among the plurality of deflection magnets, a focusing quadrupole magnet is arranged on the side of an inlet of the first extraction deflector, and a focusing quadrupole magnet is arranged on the side of an outlet of the second extraction deflector.
18 Citations
14 Claims
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1. A synchrotron that accelerates and decelerates a charged particle beam that circulates in the synchrotron, comprising:
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a first extraction deflector and a second extraction deflector that are used to extract the accelerated or decelerated beam from the synchrotron; a plurality of deflection magnets and a first single quadrupole magnet that are arranged between the first and second extraction deflectors, the first single quadrupole magnet being arranged between any deflection magnets among the plurality of deflection magnets; a second quadrupole magnet that is arranged on the upstream side of the first extraction deflector in a traveling direction of the charged particle beam on a path of the circulating charged particle beam; and a third quadrupole magnet that is arranged on the downstream side of the second extraction deflector in the traveling direction of the charged particle beam on the path of the circulating charged particle beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification