Patent ID: 9214315
Filing Date: 2015-12-15
Classification: H01J,H05H

Abstract:
1. A method of controlling a temperature of a chuck in a plasma processing apparatus, the method comprising: providing a first heat transfer fluid at a first temperature to the chuck via a first supply line and a first return line coupling the chuck to a first heat transfer fluid reservoir; providing a second heat transfer fluid at a second temperature to the chuck via a second supply line and a second return line coupling the chuck to a second heat transfer fluid reservoir; controlling a first valve coupling the first heat transfer fluid reservoir with the first supply line and controlling a second valve coupling the second heat transfer fluid reservoir with the second supply line; and equalizing a level of the first heat transfer fluid reservoir with a level of the second heat transfer fluid reservoir by flowing either the first or second heat transfer fluid through a passive leveling pipe coupling the first heat transfer fluid reservoir to the second heat transfer fluid reservoir.