Patent ID: 11949202
Assignee: CYMER, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC H  B  Y | IPC B  H

Claim 12:
13. A gas recycle system comprising:
a laser exhaust gas collection system comprising a plurality of inlet ports and an outlet port, each inlet port being configured to be fluidly coupled to an exhaust gas outlet port of an excimer laser;
a gas purifier system fluidly coupled to the outlet port of the laser exhaust gas collection system and configured to produce a purified gas mixture based on gas mixtures exhausted from any of the excimer lasers fluidly coupled to the laser exhaust gas collection system;
a gas analysis system comprising a measurement system configured to measure an amount of at least one impurity gas component in the purified gas mixture;
a gas blending system that prepares a recycled gas mixture based on the purified gas mixture; and
a control system coupled to the gas analysis system and the gas blending system, the control system configured to:
determine whether the measured amount of the at least one impurity gas component is within a range of acceptable values; and
if the measured amount of the at least one impurity gas component is not within the range of acceptable values, causing the gas blending system to add an additional gas component to the purified gas mixture to prepare the recycled gas mixture.