| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inexpensive beam control device by which fluctuations in dose are prevented, the dose of the preset amount is obtained, and to provide a particle beam irradiation device, and a control method thereof. <P>SOLUTION: The beam control device 1 includes a synchrotron 2 and performs taking-out of particle beams using resonance of betatron vibration from the synchrotron 2. This device includes: a multipole electromagnet 6 corresponding to the degree of the resonance for separatrix formation by the particle beams in the synchrotron 2; and a beam control means in which beam spill ripple of the particle beam is reduced to the specified quantity or less by controlling the magnetic field strength of the multipole electromagnet 6 on a high level while keeping the formed separatrix area in a desired size. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
