Patent ID: 7897943
Filing Date: 2011-03-01
Classification: H01J

Abstract:
1. In an ion implanter apparatus including a source for the generation of charged ions as an ion beam, means for directing the ion beam in a desired direction, and a surface for the implantation of charged ions in the ion beam into a prepared workpiece, the improvement of an assembly for adjusting and controlling particles in the ion beam, said assembly comprising: a multi-coil array comprised of (i) a first ferromagnetic bar, and (ii) a plurality of wire coils disposed on said bar; a second ferrogmagnetic bar having a planar surface which is positioned to lie parallel to and spaced from said multi-coil array; controlled power supplies for providing electric current independently to each of said coils, such that each of said coils produces an individually controllable magnetic field; and a region for applying the magnetic fields produced by said coils to an ion beam traveling therethrough, said region being dimensionally circumscribed in an x-axis direction by said multi-coil array and in a y-axis direction by the distance separating said multi-coil array from said planar surface.