Patent ID: 9386683
Filing Date: 2016-07-05
CPC Classification: A61N,H05H

Claim Text:
1. A particle accelerator comprising: a particle source from which a particle beam is extracted with a beam pulse width of not greater than 2 μsec; a linear accelerator that accelerates the particle beam extracted from the particle source; a synchrotron that receives the particle beam transported thereto from the linear accelerator and causes the particle beam to circulate in order to accelerate the particle beam until the particle beam gets to a predetermined energy level; a bump electromagnet that shifts the circulating path of the particle beam each time the particle beam makes a full turn; and a controller that controls, by gradually reducing the amperage of electric current that is supplied to the bump electromagnet each time the particle beam makes the full turn, extent of magnetic excitation of the bump electromagnet and controls timing of magnetic excitation of the bump electromagnet according to the pulse timing of the particle source.