Electromagnetic Simulations and Properties of the Fundamental Power Couplers for the SNS Superconducting Cavities

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The Spallation Neutron Source (SNS) makes use of superconducting cavities for the acceleration of negative H ions in the main linac. Two types of 6-cell Niobium cavities are used in the superconducting portion of the linac: 33 Beta=0.61 cavities and 48 Beta=0.81 cavities. Each cavity is powered via a coaxial fundamental power coupler (FPC) of a simple yet robust design. The electromagnetic design of the main components of that coupler has been modeled and some of those properties have been measured experimentally. Modeling includes impedance matching of the window and of the waveguide to coaxial doorknow transition; coupling of the ... continued below

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327 Kilobytes pages

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Kang, Y.; Kim, S.; Doleans, M.; Campisi, I.E.; Stirbet, M.; Kneisel, P. et al. June 1, 2001.

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The Spallation Neutron Source (SNS) makes use of superconducting cavities for the acceleration of negative H ions in the main linac. Two types of 6-cell Niobium cavities are used in the superconducting portion of the linac: 33 Beta=0.61 cavities and 48 Beta=0.81 cavities. Each cavity is powered via a coaxial fundamental power coupler (FPC) of a simple yet robust design. The electromagnetic design of the main components of that coupler has been modeled and some of those properties have been measured experimentally. Modeling includes impedance matching of the window and of the waveguide to coaxial doorknow transition; coupling of the coupler fields to the cavity fields; and multipacting behavior of the coaxial line and window. Various aspects of design, simulation, and testing on the coupler and cavity are presented.

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327 Kilobytes pages

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  • PAC 2001, Chicago, IL (US), 06/18/2001--06/22/2001

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  • Report No.: JLAB-ACT-01-13
  • Report No.: DOE/ER/40150-1887
  • Grant Number: AC05-00OR22725
  • Office of Scientific & Technical Information Report Number: 783672
  • Archival Resource Key: ark:/67531/metadc717099

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 5, 2016, 8:03 p.m.

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Kang, Y.; Kim, S.; Doleans, M.; Campisi, I.E.; Stirbet, M.; Kneisel, P. et al. Electromagnetic Simulations and Properties of the Fundamental Power Couplers for the SNS Superconducting Cavities, article, June 1, 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc717099/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.