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

Claim 8:
9. A gas recycle system comprising:
a gas blending system that receives a purified gas mixture and prepares a recycled gas mixture based on the received purified gas mixture;
a gas analysis system comprising a measurement system configured to:
measure an amount of at least one noble gas in the purified gas mixture received at the gas blending system, and
measure an amount of the at least one noble gas in the prepared recycled gas mixture; and

a control system configured to:
determine whether the measured amount of the at least one noble gas in the purified gas mixture received at the gas blending system is within an acceptable range of values;
if the measured amount of the at least one noble gas in the purified gas mixture is not within the range of acceptable values, cause the gas blending system to add at least one additional gas component to the purified gas mixture to prepare the recycled gas mixture; and
determine whether the measured amount of the at least one noble gas in the prepared recycled gas mixture is within the acceptable range of values.