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Thomas Schenkel - One of the best experts on this subject based on the ideXlab platform.
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Demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Q. Ji, Thomas SchenkelAbstract:© 2019 Author(s). Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.
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demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Thomas Schenkel, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Amit LalAbstract:Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement ...
K. B. Vinayakumar - One of the best experts on this subject based on the ideXlab platform.
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Demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Q. Ji, Thomas SchenkelAbstract:© 2019 Author(s). Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.
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demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Thomas Schenkel, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Amit LalAbstract:Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement ...
Steve Hopkins - One of the best experts on this subject based on the ideXlab platform.
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Title: WATER PURITY DEVELOPMENT FOR THE COUPLED CAVITY LINAC (CCL) AND DRIFT TUBE LINAC (DTL) STRUCTURES OF THE SPALLATION NEUTRON SOURCE (SNS) LINAC WATER PURITY DEVELOPMENT FOR THE COUPLED CAVITY LINAC (CCL) AND DRIFT TUBE LINAC (DTL) STRUCTURES OF THE
2020Co-Authors: Steve Hopkins, D Katonak, J BernardinAbstract:Abstract The Spallation Neutron Source (SNS) is a facility being designed for scientific and industrial research and development. SNS will generate and use neutrons as a diagnostic tool for medical purposes, material science, etc. The neutrons will be produced by bombarding a heavy metal target with a high-energy beam of protons, generated and accelerated with a Linear Particle Accelerator, or linac. The low energy end of the linac consists of two room temperature copper structures, the drift tube linac ( DTL), and the coupled cavity linac (CCL). Both of these accelerating structures use large amounts of electrical energy to accelerate the proton beam. Approximately 60-80% of the electrical energy is dissipated in the copper structure and must be removed. This is done using specifically designed water cooling passages within the linac's copper structure. Cooling water is supplied to these cooling passages by specially designed resonance control and water cooling systems. One of the primary components in the DTL and CCL water cooling systems, is a water purification system that is responsible for minimizing erosion, corrosion, scaling, biological growth, and hardware activation. The water purification system consists of filters, ion exchange resins, carbon beds, an oxygen scavenger, a UV source, and diagnostic instrumentation. This paper reviews related issues associated with water purification and describes the mechanical design of the SNS Linac water purification system
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the design and performance of a water cooling system for a prototype coupled cavity Linear Particle Accelerator for the spallation neutron source
"Submitted to: 6th ASME-JSME Thermal Engineering Joint Conference March 16-20 2003", 2002Co-Authors: John D Bernardin, Curtt Ammerman, Steve HopkinsAbstract:The Spallation Neutron Source (SNS) is a facility being designed for scientific and industrial research and development. The SNS will generate and employ neutrons as a research tool in a variety of disciplines including biology, material science, superconductivity, chemistry, etc. The neutrons will be produced by bombarding a heavy metal target with a high-energy beam of protons, generated and accelerated with a Linear Particle Accelerator, or linac. The low energy end of the linac consists of, in part, a multi-cell copper structure termed a coupled cavity linac (CCL). The CCL is responsible for accelerating the protons from an energy of 87 MeV, to 185 MeV. Acceleration of the charged protons is achieved by the use of large electrical field gradients established within specially designed contoured cavities of the CCL. While a large amount of the electrical energy is used to accelerate the protons, approximately 60-80% of this electrical energy is dissipated in the CCL's copper structure. To maintain an acceptable operating temperature, as well as minimize thermal stresses and maintain desired contours of the Accelerator cavities, the electrical waste heat must be removed from the CCL structure. This is done using specially designed water cooling passages within the linac's coppermore » structure. Cooling water is supplied to these cooling passages by a complex water cooling and temperature control system. This paper discusses the design, analysis, and testing of a water cooling system for a prototype CCL. First, the design concept and method of water temperature control is discussed. Second, the layout of the prototype water cooling system, including the selection of plumbing components, instrumentation, as well as controller hardware and software is presented. Next, the development of a numerical network model used to size the pump, heat exchanger, and plumbing equipment, is discussed. Finally, empirical pressure, flow rate, and temperature data from the prototype CCL water cooling tests are used to assess water cooling system performance and numerical modeling accuracy.« less
Amit Lal - One of the best experts on this subject based on the ideXlab platform.
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demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Thomas Schenkel, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Amit LalAbstract:Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement ...
Serhan Ardanuc - One of the best experts on this subject based on the ideXlab platform.
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Demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Q. Ji, Thomas SchenkelAbstract:© 2019 Author(s). Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.
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demonstration of waferscale voltage amplifier and electrostatic quadrupole focusing array for compact Linear Accelerators
Journal of Applied Physics, 2019Co-Authors: K. B. Vinayakumar, Thomas Schenkel, Serhan Ardanuc, Avinash Persaud, Peter A. Seidl, Amit LalAbstract:Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement an LC element resonant at ∼16.6 MHz with a quality factor of 25. An energy gain of ∼250 eV was observed using a two wafer acceleration unit with an argon ion beam with 6.5 keV initial energy. A 3 × 3 ESQA was fabricated on a glass wafer with metal electrodes formed by depositing copper metal around the beam apertures. The ESQA was used to focus and defocus an argon ion beam, demonstrating a field gradient of ∼500 V over a gap of ∼250 μm.Compact Linear Accelerators, with beam energies in the kiloelectron volt to megaelectron volt range, have applications in medicine, neutron/X-ray generation, surface modifications, etc. The size, weight, and power of existing Accelerators preclude them from mass availability in portable formats. This paper presents a specific implementation of an ion Accelerator architecture based on planar wafers with accelerating and focusing sections. Our low cost approach allows the control of the final ion beam energy with potential applications, for example, for Accelerator-based ion implantation. In this paper, we demonstrate two important waferscale modules required to build a Linear Particle Accelerator; these include (1) on-wafer voltage amplification for beam acceleration using Inductor-Capacitor (LC) resonators and (2) waferscale electrostatic quadrupole arrays (ESQA) to refocus the ion beams during transport. On-board LC resonators were developed using Printed Circuit Board fabrication processes to implement ...