Patent ID: 9512516
Filing Date: 2016-12-06
CPC Classification: C23C,H01J

Claim Text:
1. A sputtering target assembly, comprising: a cylindrical backing tube; a magnet assembly disposed within the backing tube, such that a gap volume is formed between the magnet assembly and an inner surface of the backing tube; and a conduit disposed within the backing tube and configured to provide coolant directly into the gap volume, at an angle α of 45° or less, the conduit comprising: the angle α is taken with respect to a first line along which coolant initially flows out of the conduit, and a second line tangential to the backing tube at a point where the first line intersects the inner surface of the backing tube; substantially all of the coolant in the gap volume flows in a single circumferential direction that is substantially perpendicular to a longitudinal axis of the cylindrical backing tube; the coolant plenum, the coolant channel and the gap volume form a coolant circuit; and the sputtering target assembly lacks a wiper fin, rubber stopper, gasket, seal or roller which contacts an inner surface of the backing tube.