Patent ID: 7078710

Claim:
An ion beam system, comprising: a vacuum chamber having an opening, said opening co-axially aligned with an ion beam axis; a substrate chamber having an opening, said opening co-axially aligned with said ion beam axis, said substrate chamber free to tilt about a tilt axis, said tilt axis orthogonal to and intersecting said ion beam axis; a flexible bellows connecting said opening in said substrate chamber with said opening in said vacuum chamber, said bellows co-axially aligned with said ion beam axis, said bellows providing a vacuum seal between said substrate chamber and said vacuum chamber; and a hollow foreign material shield open at a top proximate to said vacuum chamber, said top of said foreign material shield not extending past said opening in said vacuum chamber into said vacuum chamber and not attached to any structure within said vacuum chamber, said foreign material shield open at a bottom, said bottom of said foreign material shield fixidly attached and electrically connected to said substrate chamber, said foreign material shield located between said ion beam axis and said flexible bellows, said top and bottom of said foreign material shield co-axially aligned with said ion beam axis.