Patent ID: 7310409

Claim:
An electromagnetic wave generator including: an Alternating Gradient (AG) focusing circular accelerator; a controller; and a target, wherein the circular accelerator comprises an electron generator for generating electrons, an injector for injecting the electrons generated by the electron generator into the AG focusing circular accelerator, an acceleration core for generating an AC magnetic field for accelerating the electrons with an electric field induced by the magnetic field generated by the acceleration core, and a deflection electromagnet for generating a deflection magnetic field inclining in a radial direction of the circular accelerator for deflecting the electrons injected into the circular accelerator and accelerated electrons to form circular orbits, and an edge focusing magnetic field applying an approximately constant focusing force to elections passing through the edge focusing magnetic field, and producing stable electron circulation orbits spread over the radial direction of the AG focusing circular accelerator, the controller controls a time dependent relationship of intensity of the deflection magnetic field and the acceleration magnetic field to produce a first prescribed core pattern, whereby the injected electrons are accelerated and circulate along the orbits spread over the radial direction during injection by the injector and orbital radii of the orbits of the circulating electrons are varied after injection, and the target is disposed within the stable electron circulation orbits and the accelerated electrons are made to collide with the target by varying the orbital radii of the circulating electrons, whereby electromagnetic waves are generated.