Patent ID: 8673080
Filing Date: 2014-03-18
Classification: C23C,H01J

Abstract:
1. A chandelier-type showerhead comprising: (a) a stem comprising a convective cooling fluid passageway, a gas delivery passageway, a first end, and a second end opposite the first end, wherein the first end is configured for attachment to a chamber, wherein the convective cooling fluid passageway enters and exits the stem at the first end, and wherein the gas delivery passageway enters the stem at the first end and exits the stem at the second end; (b) a back plate thermally coupled to the stem at the second end; (c) a heater physically attached to the back plate; (d) a face plate thermally coupled to the back plate; and (e) a temperature sensor for measuring a temperature of the face plate, wherein the face plate is configured to be removably attached to the back plate via a mating feature and wherein the face plate material is chemical- and plasma-resistant aluminum alloy.