Patent ID: 6130926
Filing Date: 2000-10-10
Classification: A61N,H05H

Abstract:
An apparatus for recirculating charged particles through a single target location, the apparatus comprising:a cyclotron having a center and at least one resonator for acting upon charged particles drawn into the cyclotron at the center thereof so that the charged particles increase in energy and are moved along a path which spirals radially outward from the center of the cyclotron in conjunction with the increase in energy of the charged particles; andtarget means positionable in the radially-outward spiral path of the charged particles so that the charged particles strike the target means and wherein the target means permits the charged particles to pass therethrough following an absorption by the target of a small portion of the energy of the charged particles so that upon passing through the target means, the charged particles possess a reduced amount of energy and begin to spiral radially-inwardly of the cyclotron; andthe at least one resonator, the energy absorbed by the target means, and the distance of the target means from the at least one resonator are coordinated so that the at least one resonator restores energy to the reduced-energy charged particles after the particles pass through the target means so that the charged particles of reduced-energy increase in energy and once again begin to spiral radially outward from the center of the cyclotron toward the target means.