Patent ID: 6713976
Filing Date: 2004-03-30
Classification: H05H

Abstract:
A beam accelerator comprising:an annular hollow vessel having an annular passage inside, through which a charged particle beam passes, a plurality of fixed magnetic field generating means for deflecting the charged particle beam and guiding the charged particle beam into an orbit in said annular passage, located along a circumferential direction of said annular hollow vessel, an accelerating gap for inducing an accelerating electric field in the charged particle beam, located at a position of said annular hollow vessel, and an accelerator core, surrounding said annular hollow vessel, for generating the accelerating electric field via said accelerating gap by changing magnetic state of an inner portion of said annular passage in accordance with electromagnetic induction, wherein injection to ejection of charged particles is completed within one cycle of an excitation frequency applied to said accelerator core, and said accelerator core includes multiple wound layers of a ribbon-shaped soft magnetic alloy, 50 &mgr;m or less in thickness, and having a saturation magnetic flux density of at least one Tesla.