Patent ID: 8895889
Filing Date: 2014-11-25
Classification: H01J,H01L,H05B

Abstract:
1. An apparatus for processing a substrate, comprising: a process chamber; an RF source to provide RF energy to form a plasma in the process chamber; a component disposed in the process chamber so as to be heated by the plasma when formed; a heater configured to heat the component; a heat exchanger configured to remove heat from the component; a chiller coupled to the heat exchanger via a first flow conduit having an on/off flow control valve disposed therein and a bypass loop to bypass the flow control valve, wherein the bypass loop has a flow ratio valve disposed therein; a controller for opening or closing the flow control valve; a temperature measuring device situated to indicate a temperature of the component; and input(s) into the controller indicating the power going to the plasma forming electrodes or groups of such electrodes; wherein the controller substantially operates according to the following control parameters: where T