Patent ID: 8334517

Claim:
An ion implanter, comprising: an ion source capable of generating an ion beam; a mass analyzer capable of analyzing said ion beam; a substrate holder capable of holding a workpiece to be implanted by said ion beam; and a control assembly capable of adjusting said ion beam in an adjustment space between said mass analyzer and said substrate holder, said control assembly comprising: a first bended bar magnet having a first bended support rod and one or more first coils dispensed on said first bended support rod with one or more first currents flowing through said first coils; and a second bended bar magnet having a second bended support rod and one or more second coils dispensed on said second bended support rod with one or more second currents flowing through said second coils; wherein said control assembly is configured according to at least one of the following: a first curvature of said first bended bar magnet being adjustable; a second curvature of said second bended bar magnet being adjustable; said first bended bar magnet having an adjustable shape; and said second bended bar magnet having an adjustable shape; wherein said first bended bar magnet is at a gap from said second bended bar magnet to form said adjustment space between said bended bar magnets.