| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a charged particle beam treatment device capable of accurately radiating a charged particle beam with a desired dose distribution.SOLUTION: A charged particle beam treatment device 1 comprises: a radiation nozzle 8 for radiating a charged particle beam R; a degrader 30 which is provided in the radiation nozzle 8, is configured by a first absorber 31 to fourth absorber 34 for reducing energy of the charged particle beam R, and adjusts a range of the charged particle beam R according to a used combination of the absorbers; a drive unit 40 for moving the degrader 30 in a radiation axis direction of the charged particle beam R; and a control unit 7 for controlling the drive unit 40 so that the degrader 30 moves in the radiation axis direction of the charged particle beam R according to the used combination of the first absorber 31 to fourth absorber 34.</p> |
