Patent ID: 9530615
Filing Date: 2016-12-27
CPC Classification: B08B,H01J

Claim Text:
1. An ion source comprising: an ion source chamber for generation of a plasma during a processing mode, having an extraction aperture disposed on one surface; a suppression electrode having a suppression electrode aperture disposed therein, said suppression electrode disposed proximate said extraction aperture; a ground electrode having a ground electrode aperture disposed therein, said ground electrode disposed proximate said suppression electrode; an extraction power supply in communication with said ion source chamber, configured to supply a first extraction voltage and current during said processing mode and a second extraction voltage and current during a cleaning mode; and a suppression power supply in communication with said suppression electrode, configured to supply a first suppression voltage and current during said processing mode and a second suppression voltage and current during said cleaning mode, wherein a difference between said second extraction voltage and said second suppression voltage is sufficient to create a plasma in a volume defined between said extraction aperture and said suppression electrode.