Described are various embodiments of an ion beam chamber fluid delivery system and method for delivering a fluid onto a substrate in an ion beam system during operation. In one embodiment, the system comprises: a chamber comprising an ion beam gun oriented so as to cause ions to impinge the substrate, said chamber having a fluid delivery conduit therein for delivering the fluid into the chamber; a transferable substrate stage for holding the substrate, the transferable stage further configured to move between an operating position and a payload position during non-operation, said payload position for receiving and removing said substrate; and a fluid delivery nozzle being in a fixed location relative to the transferable stage, at least during operation, with an outlet position that is configured to deliver a fluid to a predetermined location on said transferable stage.