IN-SITU PARTICLE DETECTION
    8.
    发明申请

    公开(公告)号:US20250060298A1

    公开(公告)日:2025-02-20

    申请号:US18801057

    申请日:2024-08-12

    Abstract: A processing system includes a processing chamber defining a processing region. A foreline is coupled with the processing chamber and defines a fluid conduit. A plasma trap is provided within an interior of the foreline to charge and trap at least some particles in the fluid conduit. The system further includes a particle detector to collect at least some of the charged particles and measure an electric charge produced by the particles.

    DETECTION OF SURFACE PARTICLES ON CHAMBER COMPONENTS WITH CARBON DIOXIDE

    公开(公告)号:US20240060860A1

    公开(公告)日:2024-02-22

    申请号:US18493742

    申请日:2023-10-24

    Abstract: A distribution unit of a particle detection system initiates a particle collection process to dislodge one or more surface particles from a surface of an article based on a stream including at least one of solid CO2 particles or CO2 droplets. The dislodged surface particles are collected on a surface of a substrate having a pre-determined initial state including initial surface particles of the substrate. A measurement indicating a particle number concentration of detectable surface particles on the substrate after the particle collection process is completed is obtained. An initial particle number concentration of the initial surface particles of the pre-determined initial state is identified. A number of particles transported away from the surface of the article is determined based on the obtained measurement and the identified initial particle concentration.

    DETECTION OF SURFACE PARTICLES ON CHAMBER COMPONENTS WITH CARBON DIOXIDE

    公开(公告)号:US20220381653A1

    公开(公告)日:2022-12-01

    申请号:US17819255

    申请日:2022-08-11

    Abstract: A stream including at least one of solid CO2 particles or CO2 droplets is directed toward an article including surface particles. The stream causes at least a portion of the surface particles on the article to dislodge from a surface of the article. A purge cycle to transport at least a portion of the dislodged surface particles away from the surface of the article is initiated. The purge cycle includes generating a laminar flow at a first velocity for a first time period and subsequently generating a laminar flow at a second velocity for a second time period. A determination is made of whether a number of particles transported away from the surface of the article satisfies a particle criterion. In response to a determination that the number of particles transported away from the article does not satisfy the criterion, the purge cycle is re-initiated.

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