Method and apparatus for controlling exhaust pressure for an extreme ultraviolet generation chamber
First Claim
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1. An apparatus for processing exhaust gases from a chamber for processing extreme ultraviolet radiation, the apparatus comprising:
- a gas inlet configured to direct the exhaust gases from the chamber into a combustion zone, the combustion zone being configured to flamelessly ignite the exhaust gases;
an air inlet configured to direct a mixture of air and a fuel into the combustion zone;
a control valve configured to change a volume of fluid exhausted from the combustion zone; and
a controller configured to control the control valve so as to prevent a pressure inside the combustion zone from exceeding a preset pressure value.
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Abstract
An apparatus coupled to a chamber for processing extreme ultraviolet radiation includes a gas inlet configured to direct exhaust gases from the chamber into a combustion zone. The combustion zone is configured to flamelessly ignite the exhaust gases. An air inlet is configured to direct a mixture of air and a fuel into the combustion zone. A control valve is configured to change a volume of fluid exhausted from the combustion zone. A controller configured to control the control valve so as to prevent a pressure inside the combustion zone from exceeding a preset pressure value is provided.
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Citations
20 Claims
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1. An apparatus for processing exhaust gases from a chamber for processing extreme ultraviolet radiation, the apparatus comprising:
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a gas inlet configured to direct the exhaust gases from the chamber into a combustion zone, the combustion zone being configured to flamelessly ignite the exhaust gases; an air inlet configured to direct a mixture of air and a fuel into the combustion zone; a control valve configured to change a volume of fluid exhausted from the combustion zone; and a controller configured to control the control valve so as to prevent a pressure inside the combustion zone from exceeding a preset pressure value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of removing exhaust gases from a chamber for processing extreme ultraviolet radiation, the method comprising:
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directing the exhaust gases from the chamber into a combustion zone; contacting the exhaust gases inside the combustion zone with a mixture of air and a fuel; flamelessly igniting a mixture of the exhaust gases, air and the fuel in the combustion zone; and controlling an opening of a control valve of the combustion zone to prevent a pressure inside the combustion zone from exceeding a preset pressure value, the control valve being configured to change a volume of fluid exhausted from the combustion zone. - View Dependent Claims (16, 17, 18)
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19. An apparatus for generation of extreme ultraviolet radiation, the apparatus comprising:
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an extreme ultraviolet generation chamber comprising a hydrogen inlet and a hydrogen outlet; a combustor configured to oxidize an entirety of hydrogen output by the extreme ultraviolet generation chamber; and a flow controller coupled to the combustor, the flow controller being configured to prevent a pressure inside the combustor from exceeding a preset pressure value, and the flow controller comprising a control valve configured to change a volume of gas exhausted from the combustor. - View Dependent Claims (20)
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Specification