Patent ID: 7578258

Claim:
A plasma processing system comprising: a first confinement ring set movable to at least a first position and a second position; a showerhead assembly for providing gas for the plasma processing system to perform plasma processing, the first confinement ring set surrounding the showerhead assembly when the first confinement ring set is in the second position; and a second confinement ring set, the second confinement ring set surrounding the first confinement ring set when the first confinement ring set is in the first position, wherein the first confinement ring set is configured to define a first area when the first confinement ring set is in the first position, the first area is associated with a first portion of the plasma processing system, the first confinement ring set and the second confinement ring set are configured to define a second area between the first confinement ring set and the second confinement ring set when the first confinement ring set is in the first position, and the second area is associated with a second portion of the plasma processing system; a set of induction coils to radiate radio frequency energy and a grounded ring to facilitate grounding, wherein the second area is between the set of induction coils and said grounded ring.