ROBUST FLUID COUPLING APPARATUS
    2.
    发明公开

    公开(公告)号:US20230279974A1

    公开(公告)日:2023-09-07

    申请号:US18010312

    申请日:2021-07-13

    CPC classification number: F16L17/02 H05G2/008

    Abstract: A target material supply apparatus includes: first and second fluid flow components (1122, 1126) that define an axial flow path when joined together, in which the axial flow path is between a source of target material fluid and a nozzle supply apparatus; and a coupling apparatus configured to seal the joint between the first and second fluid flow components. The coupling apparatus includes a gasket (1105) having an annular shape defining an inner opening that is a part of the axial flow path when seated and sealed. When the gasket is seated between the first and second fluid flow components to thereby seal the joint formed by attaching the first and second fluid flow components, pressure applied to the gasket from target material fluid traversing the gasket inner opening along the axial flow path improves the hermetic function of the seal at the joint. Optionally, a functional insert like e.g. a flow restrictor (1160) can be seated in the gasket.

    EUV LPP SOURCE WITH IMPROVED DOSE CONTROL BY TRACKING DOSE OVER SPECIFIED WINDOW

    公开(公告)号:US20170181258A1

    公开(公告)日:2017-06-22

    申请号:US14975436

    申请日:2015-12-18

    CPC classification number: H05G2/008 H05G2/003 H05G2/005 H05G2/006

    Abstract: A method and apparatus for controlling a dose of extreme ultraviolet (EUV) radiation generated by a laser produced plasma (LPP) EUV light source. In one embodiment, a running total of the EUV energy generated over a predetermined number of laser pulses is measured; once that number of pulses is exceeded, the energy from the pulse immediately preceding the most recent predetermined number of pulses is dropped from the running total, so that the running total is from the most recent predetermined number of pulses. If the running total of the EUV energy exceeds a target dose, the next pulse is caused to not hit a droplet. This avoids the unwanted side effects of various prior art solutions, such as needing to miss many droplets in a row, or requiring the laser pulses to be shortened or reduced in power as in other prior art solutions.

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