Patent ID: 7037376

Claim:
A substrate processing system comprising: a housing defining a process chamber; a substrate support for supporting a substrate within the chamber; a processing gas source; a remote plasma generator; a gas distribution showerhead positioned proximate to the substrate support, a foreline configured to receive exhaust from the chamber; and a gas delivery system in selective fluid communication with the processing gas source, the remote plasma source, the gas distribution showerhead, and the foreline, the gas delivery system configurable to flow processing gas from the processing gas source into the chamber through the gas distribution showerhead during processing of a substrate within the chamber, and configurable to flow cleaning plasma from the chamber into the foreline through the gas distribution showerhead during removal of residue from the chamber, wherein the gas delivery system comprises: a first valve selectively operable to a first configuration to place the remote plasma source in fluid communication with the chamber; and a second valve selectively operable to a first configuration to place the gas distribution showerhead in fluid communication with the foreline, wherein the first valve is selectively operable between the first configuration and a second configuration to place the chamber in fluid communication with the second valve; and the second valve is selectively operable between the first configuration and a second configuration to place the first valve in fluid communication with the foreline.