Patent ID: 8071964
Filing Date: 2011-12-06
Classification: H01J

Abstract:
1. An ion implantation system, comprising: an ion source configured to generate an ion beam; a mass analyzer configured to mass analyze the ion beam; a scanner configured to scan the mass analyzed ion beam to form a ribbon-shaped ion beam; a bending element downstream of the scanner and configured to bend the ribbon-shaped ion beam; an endstation configured to secure a workpiece and receive the bent ribbon-shaped ion beam; and a beam current measuring system immediately following the bending element, and configured to measure an ion beam current associated with the bent ribbon-shaped beam immediately following the bending element; wherein the beam current measuring system comprises a first Faraday cup located at a first lateral edge of the ribbon-shaped ion beam at an exit of the bending element; and wherein the beam current measuring system further comprises a second Faraday cup located at a second lateral edge of the ribbon-shaped ion beam opposite the first lateral edge, and located at the exit of the bending element.