APPARATUS AND METHOD FOR CURRENT SENSING USING EMBEDDED ELECTRODES

    公开(公告)号:US20240312772A1

    公开(公告)日:2024-09-19

    申请号:US18122509

    申请日:2023-03-16

    CPC classification number: H01J37/32935 H01J37/32357 H01J2237/24564

    Abstract: An in-situ current sensing apparatus for a plasma processing system has one or more sections defining a plasma channel, the plasma processing system configured to form a plasma in the plasma channel using a process gas. The in-situ current sensing apparatus includes an assembly including an electrically conductive housing coupled to a dielectric coating layer, wherein a surface of the dielectric coating layer is configured to physically contact at least one of the process gas or the plasma in the plasma channel. The in-situ current sensing apparatus also includes a current probe, inductively or electrically connected to the assembly, for sensing a capacitively-coupled current within the assembly caused by the formation of plasma in the plasma channel. The in-situ current-sensing apparatus further includes at least one dielectric break for electrically isolating the assembly from the one or more sections. The assembly may include an electrode embedded within the housing.

    METHOD AND APPARATUS FOR PLASMA IGNITION IN TOROIDAL PLASMA SOURCES

    公开(公告)号:US20240284584A1

    公开(公告)日:2024-08-22

    申请号:US18112712

    申请日:2023-02-22

    CPC classification number: H05H1/52 H05H1/4652 H05H2242/10

    Abstract: A plasma apparatus of a plasma processing system is provided. The plasma apparatus defines a toroidal plasma channel and includes multiple end blocks defining respective portions of the toroidal plasma channel. Each end block includes an end-block tube constructed from a first electrically conductive material and a dielectric coating disposed on an interior surface of the end-block tube. The plasma apparatus also includes multiple mid-blocks defining respective portions of the toroidal plasma channel. Each mid-block includes at least one heat sink located adjacent to a substantially linear tube with a thermal interface disposed therebetween. The thermal interface is in physical communication with the tube and the at least one heat sink. The mid-block tube has a substantially uniform wall thickness and is constructed from a dielectric material. The at least one heat sink is constructed from a second electrically conductive material.

    Radical output monitor for a remote plasma source and method of use

    公开(公告)号:US11114287B2

    公开(公告)日:2021-09-07

    申请号:US16438827

    申请日:2019-06-12

    Abstract: The present application discloses a device for radical monitoring a plasma source for a remote plasma source used in a processing system and includes at least one gas source, a plasma source body having at least one passage having at least one passage surface, a first thermal sensor receiver may be formed within the plasma source body proximate to the passage surface of the passage, a first thermal sensor positioned within the first thermal sensor receiver configured to measure a first temperature of the passage surface, a second thermal sensor receiver formed within the plasma source body proximate to the passage surface of the passage and configured to measure a second temperature of the passage surface of the passage at a second location.

    Multi-Sensor Gas Sampling Detection System for Radical Gases and Short-Lived Molecules and Method of Use

    公开(公告)号:US20220214321A1

    公开(公告)日:2022-07-07

    申请号:US17583712

    申请日:2022-01-25

    Abstract: The present application is directed to a method of measuring the concentration of radicals in a gas stream which includes the steps of flowing a radical gas stream emitted from at least one radical gas generator to at least one processing chamber, providing at least one sampling reaction module having at least one sampling tube therein, establishing a reference temperature of the sampling tube with at least one thermal control module, diverting a portion of the radical gas steam from the radical gas generator into the sampling tube, reacting at least one reagent with at least one radical gas within a defined volume of the radical gas stream thereby forming at least one chemical species within at least one compound stream, the compound stream flowing within the sampling tube, measuring a change of temperature of the sampling tube due to interaction of the chemical species within the compound stream and the sampling tube with sensor module, and calculating a concentration of the chemical species within the compound stream flowing within the sampling tube based on the measured temperature change of the sampling tube.

    Method and apparatus for plasma ignition in toroidal plasma sources

    公开(公告)号:US12207385B2

    公开(公告)日:2025-01-21

    申请号:US18112712

    申请日:2023-02-22

    Abstract: A plasma apparatus of a plasma processing system is provided. The plasma apparatus defines a toroidal plasma channel and includes multiple end blocks defining respective portions of the toroidal plasma channel. Each end block includes an end-block tube constructed from a first electrically conductive material and a dielectric coating disposed on an interior surface of the end-block tube. The plasma apparatus also includes multiple mid-blocks defining respective portions of the toroidal plasma channel. Each mid-block includes at least one heat sink located adjacent to a substantially linear tube with a thermal interface disposed therebetween. The thermal interface is in physical communication with the tube and the at least one heat sink. The mid-block tube has a substantially uniform wall thickness and is constructed from a dielectric material. The at least one heat sink is constructed from a second electrically conductive material.

    Multi-sensor gas sampling detection system for radical gases and short-lived molecules and method of use

    公开(公告)号:US11733224B2

    公开(公告)日:2023-08-22

    申请号:US17583712

    申请日:2022-01-25

    Abstract: The present application is directed to a method of measuring the concentration of radicals in a gas stream which includes the steps of flowing a radical gas stream emitted from at least one radical gas generator to at least one processing chamber, providing at least one sampling reaction module having at least one sampling tube therein, establishing a reference temperature of the sampling tube with at least one thermal control module, diverting a portion of the radical gas steam from the radical gas generator into the sampling tube, reacting at least one reagent with at least one radical gas within a defined volume of the radical gas stream thereby forming at least one chemical species within at least one compound stream, the compound stream flowing within the sampling tube, measuring a change of temperature of the sampling tube due to interaction of the chemical species within the compound stream and the sampling tube with sensor module, and calculating a concentration of the chemical species within the compound stream flowing within the sampling tube based on the measured temperature change of the sampling tube.

    Radical Output Monitor for a Remote Plasma Source and Method of Use

    公开(公告)号:US20190385829A1

    公开(公告)日:2019-12-19

    申请号:US16438827

    申请日:2019-06-12

    Abstract: The present application discloses a device for radical monitoring a plasma source for a remote plasma source used in a processing system and includes at least one gas source, a plasma source body having at least one passage having at least one passage surface, a first thermal sensor receiver may be formed within the plasma source body proximate to the passage surface of the passage, a first thermal sensor positioned within the first thermal sensor receiver configured to measure a first temperature of the passage surface, a second thermal sensor receiver formed within the plasma source body proximate to the passage surface of the passage and configured to measure a second temperature of the passage surface of the passage at a second location.

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