Patent ID: 7642529

Claim:
A method comprising: directing an ion beam at a plurality of differing incident angles with respect to a target surface of a substrate implant ions into a plurality of portions of said substrate, wherein each one of said plurality of differing incident angles is associated with a different one of said plurality of portions; measuring angle sensitive data from each of said plurality of portions of said substrate; determining an angle misalignment between said target surface and said ion beam incident on said target surface from said angle sensitive data; and determining a substrate miscut angle in a first direction between a desired crystalline plane and an actual plane of said target surface of said substrate from said angle sensitive data, wherein said determining said substrate miscut angle comprises: directing said ion beam at a first plurality of differing incident angles to implant ions into a first plurality of portions of said substrate when said substrate is positioned in a first position, wherein each one of said first plurality of differing incident angles is associated with a different one of said first plurality of portions and said first plurality of portions is positioned on at least a portion of a first half of said substrate; rotating said substrate 180° from said first position to a second position; directing said ion beam at said first plurality of incident angles to implant ions into a second plurality of portions of said substrate when said substrate is positioned in said second position, wherein each one of said first plurality of differing incident angles is associated with a different one of said second plurality of portions and said second plurality of portions is positioned on at least a portion of a second half of said substrate; measuring angle sensitive data of said first and second plurality of portions of said substrate; and comparing said angle sensitive data from said first and second plurality of portions to determine said substrate miscut angle.