CHARGED PARTICLE BEAM GENERATION DEVICE, PARTICLE BEAM THERAPY EQUIPMENT EQUIPPED WITH THE SAME, AND OPERATION METHOD OF CHARGED PARTICLE BEAM GENERATION DEVICE

摘要

To provide a charged particle beam generation device capable of reducing undesired stoppage of the device while, compared to conventional, constantly maintaining a beam current emitted from a straight line accelerator with a simple constitution, a particle beam therapy equipment equipped with the same, and an operation method of charged particle beam generation device.SOLUTION: The charged particle beam generation device comprises: an ion source 2; a pull-out electrode system 5; an electrostatic lens 7 for focusing a pull-out beam 14; a straight line accelerator 9 for accelerating the pull-out beam 14; a beam current detection unit 10 for detecting a beam current of an output beam 11 or the pull-out beam 14 after having passed the electrostatic lens 7; and a control unit 13 configured to control the voltage to be applied to the electrostatic lens 7 depending on the beam current detected the beam current detection unit 10.SELECTED DRAWING: Figure 1