Patent ID: 8920613
Filing Date: 2014-12-30
Classification: C23C,H01J

Abstract:
1. A plasma processing chamber, comprising: a vacuum chamber arranged about a central axis; a pedestal for supporting a substrate in a first plane perpendicular to the central axis adjacent a processing space in the vacuum chamber; a non-axisymmetric electromagnet coil symmetrically wound about an offset axis offset from the central axis by a predetermined and fixed offset and extending about the offset axis along a second plane around the processing space; a DC power supply providing continuous DC power to the non-axisymmetric electromagnet coil; and a single-turn RF inductive coil wound about the central axis and having a pair of junctions for connection to an RF power supply and to ground, wherein the predetermined and fixed offset is aligned along a direction from the pair of junctions to the central axis.