Patent ID: 7851767
Filing Date: 2010-12-14
Classification: G21K,H01J

Abstract:
1. A beam control assembly to shape a ribbon beam of ions for ion implantation, wherein the ribbon beam has a beam width and travels in a beam direction, wherein a first dimension corresponds to the beam width and a second dimension corresponds to the beam direction of the ribbon beam, the beam control assembly comprising: a first bar; a first coil disposed on the first bar, wherein the first coil is the only coil disposed on the first bar, wherein the first coil includes windings of electrical wire, and wherein the first coil is configured to move along the first bar to be located at different positions in the first dimension on the first bar; a second bar disposed opposite the first bar with a gap defined between the first bar and second bar, wherein the ribbon beam travels between the gap; a second coil disposed on the second bar, wherein the second coil is the only coil disposed on the second bar, wherein the second coil includes windings of electrical wire, and wherein the second coil is configured to move along the second bar to be located at different positions in the first dimension on the second bar; a first electrical power supply connected to the first coil without being electrically connected to any other coil; and a second electrical power supply connected to the second coil without being electrically connected to any other coil.