Patent ID: 11424112

Abstract:
Embodiments herein include a transparent halo assembly for reducing an amount of sputtered material to minimize particle defects impacting a workpiece. In some embodiments, a halo assembly may include a first halo arranged around a semiconductor workpiece, and a mounting assembly coupling the first halo to a roplat. The first halo may include a first side opposite a second side, and a first end opposite a second end, wherein the first side is operable to receive an ion beam from an ion source. The first halo may further include a plurality of apertures extending between the first and second sides, wherein the plurality of apertures permit passage of a portion of the ion beam to pass therethrough, towards the mounting assembly. In some embodiments, the halo assembly may include a second halo positioned proximate the first halo, and a third halo disposed between the first halo and the mounting assembly.