概要（Overview）

The VIISion 80 ion implanter beam line incorporates a number of significant features to enhance the generation and transport of ion beams with high efficiencies and minimal heavy metals and particle production. These include a dual filament ion source, a constant current extraction system with variable z axis and suppression voltage, a very high resolving power high acceptance mass analysis system, a rotating mass defining slit, a variable gap acceleration system and a full faraday in front of the wafer.