Patent ID: 7862683

Claim:
A substrate processing chamber comprising: a chamber wall defining a substrate processing space; an asymmetrical annular groove disposed around the inner wall of the processing chamber, wherein a remote plasma space is configured using the asymmetrical annular groove, the asymmetrical annular groove having a height and a depth used to configure the remote plasma space; a baffle plate disposed in the asymmetrical annular groove, wherein the baffle plate is configured to divide the remote plasma space into an upstream region and a down stream region the baffle plate having a plurality of holes for controlling a plasma species flow; an upper shield disposed between the processing space and the remote plasma space, wherein the upper shield comprises a number of supply holes configured to flow the remote plasma supply species from the down stream region into the processing space; and a remote plasma source connected to the upstream region in the remote plasma space in the asymmetrical annular groove, the remote plasma source being configured for generating chamber cleaning species, the chamber cleaning species being introduced from the remote plasma source into the upstream region through the holes in the baffle plate to the down stream region and through the supply holes in the upper shield into the processing space to clean components of the processing chamber.