Patent ID: 9644262
Date: 2017-05-09
CPC Classifications: C23C,H01J,Y10T

Claim:
1. A process shield for use in a substrate processing chamber having a chamber lid comprising a target coupled to the chamber lid, the process shield comprising: an elongated annular body having an outer surface and an inner surface defining a central opening of the body; a lip extending radially outward from the outer surface of the body proximate a first end of the body such that a first portion of the body extends beyond the lip toward the first end; a plurality of openings in the lip; and a pin disposed in each of at least three of the plurality of openings and protruding from the lip to align the target atop the process shield as the chamber lid is placed atop the process shield, wherein a center of a first pin is located at a first angle of about 115 degrees from a center of a second pin, the center of the second pin is located at a second angle of about 115 degrees from the center of a third pin, and the center of the first pin is located at a third angle of about 130 degrees from the center of the third pin, and wherein the third angle is greater than each of the first and second angles.