Patent ID: 6642677
Filing Date: 2003-11-04
Classification: H05H

Abstract:
An apparatus for improving the focusing and energy match of linear accelerators, comprising:a plurality of recirculating linear accelerators forming a beam path, said plurality of recirculating linear accelerators including at least one recirculating linear accelerator at a lower beam energy and at least one recirculating linear accelerator at a higher beam energy, a full energy recirculation line connected to the higher beam energy recirculating linear accelerator, said full energy recirculation line receiving the full energy beam from the higher beam energy recirculating linear accelerator and reinjecting it into said higher beam energy recirculating linear accelerator, said lower beam energy recirculating linear accelerator being focused at a constant focal length, said higher beam energy recirculating linear accelerator being focused at a constant focal length, whereby the focusing energy and the beam energy are more closely matched along the plurality of linear accelerators.