Patent ID: 7315034
Filing Date: 2008-01-01
Classification: H01J

Abstract:
1. An irradiation system with an ion beam/charged particle beam which is configured that the beam transformed by a beam transformer from a circular cross-section or an elliptical or oval cross-section to an elliptical or oval cross-section that is long in scanning direction after deflection for scanning, is subjected to an energy analysis by an energy filter configured to bend the beam at a uniform angle at any positions overall in a scanning-deflection area thereof, and then is incident on an irradiation target, wherein said energy filter comprises deflection electrodes and a deflection magnet, and a switching device is provided to switch among said deflection electrodes and said deflection magnet and both of them depending on a condition for the use of the ion beam/charged particle beam, and wherein the turning point of the trajectory of the ion beam/charged particle beam bent by said deflection electrodes and said turning point of said trajectory of the ion beam/charged particle beam bent by said deflection magnet are identical.