Patents by Inventor Joshua Abeshaus
Joshua Abeshaus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250188592Abstract: A target body can define a central bore along a central axis of the target body. The central axis extends between two planar ends of the target body. The target body has an effective density of less than 0.5 in region around the central bore. The target body can be a metal-doped ceramic material including AlN doped with aluminum or a homogenous ceramic material including AlN or Al2O3 and may be fabricated using additive manufacturing.Type: ApplicationFiled: December 9, 2024Publication date: June 12, 2025Inventors: Joshua Abeshaus, Neil Bassom, Neil Colvin, Camilla Zimmerman, Paul Silverstein, Makita Erni
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Publication number: 20250118524Abstract: An arc chamber for an ion source defines a chamber volume, and a target material is disposed within the chamber volume. The target material comprises a dopant species and can be contained in a target member. An indirectly heated cathode is positioned within the chamber volume and ionizes a source gas within the chamber volume, defining a plasma having a plasma thermal emission. A target heater selectively heats the target material independently from the plasma thermal emission associated with the plasma. The target heater can be a resistive heating element, inductive heating element, halogen heating element, or a laser configured to selectively heat at least a portion of the target member. The target member can consist of a solid dopant material or can contain a liquid dopant material.Type: ApplicationFiled: October 3, 2024Publication date: April 10, 2025Inventors: Neil K. Colvin, Neil J. Bassom, Joshua Abeshaus
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Publication number: 20250087451Abstract: An ion source having a thermionically-emitting cathode coupled to a plasma chamber and is exposed to a plasma chamber environment. A first power supply is coupled to a first filament associated with the thermionically-emitting cathode and is configured to selectively supply a first power to the first filament to heat the first filament to a first temperature and induce a thermionic emission from the thermionically-emitting cathode. A non-thermionically emitting cathode is coupled to the plasma chamber and exposed to the plasma chamber environment. A second power supply supplies a second power to a second filament associated with the non-thermionically emitting cathode and heats the second filament and the non-thermionically emitting cathode to a second temperature while not inducing thermionic emission from the non-thermionically emitting cathode, where condensation within the plasma chamber environment is minimized.Type: ApplicationFiled: August 30, 2024Publication date: March 13, 2025Inventors: Neil J. Bassom, Joshua Abeshaus, David Sporleder
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Patent number: 12154763Abstract: An ion source has an arc chamber defining an arc chamber volume. A reservoir is coupled to the arc chamber, defining a reservoir volume. The reservoir receives a source species to define a liquid within the reservoir volume. A conduit fluidly couples the reservoir volume to the arc chamber volume. First and second openings of the conduit are open to the respective reservoir and arc chamber volume. A heat source selectively heats the reservoir to melt the source species at a predetermined temperature. A liquid control apparatus controls a first volume of the liquid within the reservoir volume to define a predetermined supply of the liquid to the arc chamber volume. The liquid control apparatus is a pressurized gas source fluidly coupled to the reservoir to supply a gas to the reservoir and provide a predetermined amount of liquid to the arc chamber.Type: GrantFiled: June 16, 2023Date of Patent: November 26, 2024Assignee: Axcelis Technologies, Inc.Inventors: Neil J. Bassom, Joshua Abeshaus, David Sporleder, Neil Colvin, Joseph Valinski, Michael Cristoforo, Vladimir Romanov, Pradeepa Kowrikan Subrahmnya
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Publication number: 20240145213Abstract: An electrode apparatus for an ion implantation system has a base plate having a base plate aperture and at least one securement region. A securement apparatus is associated with each securement region, and a plurality of electrode rods are selectively coupled to the base plate by the securement apparatus. The plurality of electrode rods have a predetermined shape to define an optical region that is associated with the base plate aperture. An electrical coupling electrically connects to the plurality of electrode rods and is configured to electrically connect to an electrical potential. The plurality of electrode rods have a predetermined shape configured to define a path of a charged particle passing between the plurality of electrode rods based on the electrical potential. The plurality of electrode rods can define a suppressor or ground electrode downstream of an extraction aperture of an ion source.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Inventors: Neil Colvin, Paul Silverstein, Joshua Abeshaus
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Publication number: 20230343558Abstract: An ion source has an arc chamber defining an arc chamber volume. A reservoir is coupled to the arc chamber, defining a reservoir volume. The reservoir receives a source species to define a liquid within the reservoir volume. A conduit fluidly couples the reservoir volume to the arc chamber volume. First and second openings of the conduit are open to the respective reservoir and arc chamber volume. A heat source selectively heats the reservoir to melt the source species at a predetermined temperature. A liquid control apparatus controls a first volume of the liquid within the reservoir volume to define a predetermined supply of the liquid to the arc chamber volume. The liquid control apparatus is a pressurized gas source fluidly coupled to the reservoir to supply a gas to the reservoir and provide a predetermined amount of liquid to the arc chamber.Type: ApplicationFiled: June 16, 2023Publication date: October 26, 2023Inventors: Neil J. Bassom, Joshua Abeshaus, David Sporleder, Neil Colvin, Joseph Valinski, Michael Cristoforo, Vladimir Romanov, Pradeepa Kowrikan Subrahmnya
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Patent number: 11728140Abstract: An ion source has an arc chamber defining an arc chamber volume. A reservoir is coupled to the arc chamber, defining a reservoir volume. The reservoir receives a source species to define a liquid within the reservoir volume. A conduit fluidly couples the reservoir volume to the arc chamber volume. First and second openings of the conduit are open to the respective reservoir and arc chamber volume. A heat source selectively heats the reservoir to melt the source species at a predetermined temperature. A liquid control apparatus controls a first volume of the liquid within the reservoir volume to define a predetermined supply of the liquid to the arc chamber volume. The liquid control apparatus is a pressurized gas source fluidly coupled to the reservoir to supply a gas to the reservoir and provide a predetermined amount of liquid to the arc chamber.Type: GrantFiled: January 31, 2022Date of Patent: August 15, 2023Assignee: Axcelis Technologies, Inc.Inventors: Neil J. Bassom, Joshua Abeshaus, David Sporleder, Neil Colvin, Joseph Valinski, Michael Cristoforo, Vladimir Romanov, Pradeepa Kowrikan Subrahmnya
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Publication number: 20230245859Abstract: An ion source has an arc chamber defining an arc chamber volume. A reservoir is coupled to the arc chamber, defining a reservoir volume. The reservoir receives a source species to define a liquid within the reservoir volume. A conduit fluidly couples the reservoir volume to the arc chamber volume. First and second openings of the conduit are open to the respective reservoir and arc chamber volume. A heat source selectively heats the reservoir to melt the source species at a predetermined temperature. A liquid control apparatus controls a first volume of the liquid within the reservoir volume to define a predetermined supply of the liquid to the arc chamber volume. The liquid control apparatus is a pressurized gas source fluidly coupled to the reservoir to supply a gas to the reservoir and provide a predetermined amount of liquid to the arc chamber.Type: ApplicationFiled: January 31, 2022Publication date: August 3, 2023Inventors: Neil J. Bassom, Joshua Abeshaus, David Sporleder, Neil Colvin, Joseph Valinski, Michael Cristoforo, Vladimir Romanov, Pradeepa Kowrikan Subrahmnya
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Publication number: 20230135525Abstract: An ion source has arc chamber having one or more radiation generating features, an arc chamber body enclosing an internal volume, and at least one gas inlet aperture defined therein. A gas source provides a gas such as a source species gas or a halide through the gas inlet aperture. The source species gas can be an aluminum-based ion source material such as dimethylaluminum chloride (DMAC). One or more shields positioned proximate to the gas inlet aperture provide a fluid communication between the gas inlet aperture and the internal volume, minimize a line-of-sight from the one or more radiation generating features to the gas inlet aperture, and substantially prevent thermal radiation from reaching the gas inlet aperture from the one or more radiation generating features.Type: ApplicationFiled: October 28, 2022Publication date: May 4, 2023Inventors: Neil K. Colvin, Neil Bassom, Joshua Abeshaus
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Patent number: 10573485Abstract: An electrode system for an ion source has a source electrode that defines a source aperture in an ion source chamber, and is coupled to a source power supply. A first ground electrode defines a first ground aperture that is electrically coupled to an electrical ground potential and extracts ions from the ion source. A suppression electrode is positioned downstream of the first ground electrode and defines a suppression aperture that is electrically coupled to a suppression power supply. A second ground electrode is positioned downstream of the suppression electrode and defines a second ground aperture. The first and second ground electrodes are fixedly coupled to one another and are electrically coupled to the electrical ground potential.Type: GrantFiled: December 20, 2018Date of Patent: February 25, 2020Assignee: Axcelis Technologies, Inc.Inventors: Wilhelm Platow, Edward Eisner, Bo Vanderberg, Neil Bassom, Michael Cristoforo, Joshua Abeshaus