Patent ID: 7888662
Filing Date: 2011-02-15
Classification: H01J

Abstract:
1. An ion implanter comprising: an ion source chamber having interior surfaces and an aperture through which ion beams are extracted, said source chamber configured to receive a cleaning gas to remove deposits from said interior surfaces; an electrode positioned outside of said ion source chamber proximate to said aperture, said electrode having at least one slot providing an extraction path for said ion beam exiting said source chamber aperture; and a suppression plug disposed on said electrode but distal from said slot, said electrode configured for displacement with respect to said ion source aperture wherein when said electrode is in a first position, said suppression plug allows said ion beam to be extracted through said slot uninhibited and when said electrode is in a second position, said suppression plug inhibits, at least partially, the extraction of said ion beam from said source chamber aperture to increase pressure within said chamber.