Patent ID: 8148922

Claim:
An accelerator system able to accelerate high currents (5 mA or more) of proton beams at high energies (0.3 MeV or more) comprising: a dc accelerating structure having an accelerating column, wherein the accelerating column comprises a plurality of conducting electrodes separated from each other by insulating rings, the accelerating column configured to provide an accelerating electric field to accelerate the proton beam; a high voltage (0.3 MeV or more), high current (5 mA or more) power supply providing accelerating voltage to said accelerating structure; a proton ion source having a beam extraction aperture, wherein the proton ion source provides 5 mA or more of proton beam while releasing less than 3 SCCM of neutral hydrogen gas through the beam extraction hole; a dipole analyzing magnet located between the ion source and the accelerating column, wherein the field configuration of the analyzing magnet prevents ions other than protons produced by the ion source to reach the accelerating structure.