Patent Number: 
Section: claims

1. An ion-implanting apparatus comprising: a sweeping magnet for sweeping an ion beam in an X-direction under a magnetic field;  a scan mechanism for mechanically scanning a target within a sweep region of the ion beam in a Y-direction perpendicular to said X-direction; and  an implanting control unit which changes a sweep frequency of the ion beam to be swept by said sweeping magnet according to at least one of the ion species and energy of the ion beam and changes the minimum number of times of scanning of the target to be scanned by said scan mechanism according to the changing of the sweep frequency. 2. An ion-implanting method comprising: sweeping an ion beam in an X-direction under a magnetic field by a sweeping magnet;  scanning mechanically a target within a sweep region of the ion beam in a Y-direction perpendicular to said X-direction by a scan mechanism; and  changing a sweep frequency of the ion beam to be swept according to at least one of the ion species and energy of the ion beam and changing the minimum number of times of scanning of the target to be scanned according to the changing of the sweep frequency.