Image Number 5 for United States Patent #7262565.
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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