Patent ID: 6885014
Filing Date: 2005-04-26
Classification: H01J

Abstract:
1. An ion implantation system for implanting one or more workpieces with an ion beam, comprising: an ion source producing an elongated input ion beam along a longitudinal path, the input ion beam comprising a first transverse width and a first transverse height near the source, the first transverse width and the first transverse height defining a first aspect ratio as a ratio of the first transverse width and the first transverse height, wherein the first transverse width is larger than the first transverse height, a beamline system comprising a mass analyzer positioned downstream from the ion source along the path to receive the elongated input ion beam at an entrance end of the beamline assembly, the mass analyzer providing a magnetic field across the path so as to deflect ions from the input ion beam at varying trajectories according to mass to provide an elongated mass analyzed ion beam including ions of a desired mass, the mass analyzed ion beam comprising a second transverse width and a second transverse height at an exit end of the beamline assembly, the second transverse width and the second transverse height defining a second aspect ratio as a ratio of the second transverse and the second transverse height; and an end station proximate the exit end of the beamline assembly, the end station receiving the mass analyzed ion beam from the beamline system and supporting at least one workpiece along the path for implantation using the mass analyzed ion beam; wherein the second aspect ratio is substantially the same as the first aspect ratio.