Patent ID: 8957396
Filing Date: 2015-02-17
Classification: A61N,G21K,H05H

Abstract:
1. A method for radiation therapy of a tumor of a patient with charged particles from a charged particle cancer therapy system, comprising sequential steps of: generating hydrogen anions in an injector; converting the hydrogen anions into protons using an injection foil; injecting the protons into a synchrotron; accelerated the protons in said synchrotron yielding accelerated charged particles; inducing oscillation of the acceleration charged particles yielding oscillating charged particles; extracting the oscillating charged particles from said synchrotron using an extraction foil yielding reduced energy charged particles; and transporting the reduced energy charged particles to the tumor, wherein a charged particle beam path initiates in said injector, wherein said charged particle beam path circumferentially surrounds the protons in said synchrotron, wherein said charged particles beam path circumferentially surrounds at least a portion of all of: (1) the hydrogen anions; (2) the accelerated charged particles; (3) the oscillating charged particles; and (4) the reduced energy charged particles, and wherein the reduced energy charged particles traverse a reduced energy path inside of a mean radius of curvature path of the accelerated charged particles, said reduced energy path passing through an angle of at least ninety degrees circumferentially about a center of said synchrotron.