Spiral orbit charged particle accelerator and its acceleration method
First Claim
1. A spiral orbit charged particle accelerator comprising means for forming a non-isochronous magnetic field distribution in which the magnetic field increases as the radius increases and means for forming a distribution of fixed-frequency accelerating RF voltage, said non-isochronous magnetic field distribution and said distribution of fixed-frequency accelerating RF voltage being formed so that a harmonic number defined as a ratio of the particle revolution period to the period of the accelerating RF voltage changes in integer for every particle revolution.
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Abstract
According to the present invention, a non-isochronous magnetic field distribution in which the magnetic field increases as the radius increases is formed and a distribution of fixed-frequency accelerating RF voltage is formed, said non-isochronous magnetic field distribution and said distribution of fixed-frequency accelerating RF voltage being formed so that a harmonic number defined as a ratio of the particle revolution period to the period of the accelerating RF voltage decreases in integer for every particle revolution.
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Citations
6 Claims
- 1. A spiral orbit charged particle accelerator comprising means for forming a non-isochronous magnetic field distribution in which the magnetic field increases as the radius increases and means for forming a distribution of fixed-frequency accelerating RF voltage, said non-isochronous magnetic field distribution and said distribution of fixed-frequency accelerating RF voltage being formed so that a harmonic number defined as a ratio of the particle revolution period to the period of the accelerating RF voltage changes in integer for every particle revolution.
- 4. An acceleration method used in a spiral orbit charged particle accelerator, said method comprising steps of forming a non-isochronous magnetic field distribution in which the magnetic field increases as the radius increases and forming a distribution of fixed-frequency accelerating RF voltage, said non-isochronous magnetic field distribution and said distribution of fixed-frequency accelerating RF voltage being formed so that a harmonic number defined as a ratio of the particle revolution period to the period of the accelerating RF voltage changes in integer for every particle revolution.
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