Cyclotron

Abstract

There is provided a cyclotron including: a hollow yoke including first and second yoke portions facing each other and a side yoke portion connecting the first and second yoke portions to each other; first and second poles provided in the yoke so as to face each other; a coil disposed so as to surround the first and second poles; a D electrode provided between the first and second poles; a power source configured to supply electric power to the coil; a pole temperature detector configured to detect a temperature of at least one of the first and second poles; a yoke temperature detector configured to detect a temperature of the side yoke portion; and a control unit configured to control supply of electric power to the coil by the power source on the basis of detection results of the pole temperature detector and the yoke temperature detector.

Dependencies are inferred from the claim text.