Field flatness tuning of TM110 mode cavities with closely spaced modes

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Superconducting cavities for the CKM RF separated kaon beamline at Fermilab have modes that are closely spaced compared to the resonance bandwidths when warm, and this complicates the field flatness (warm) tuning process. Additionally, it is necessary to maintain the azimuthal orientation of the mode during the tuning deformations. the authors present two analytic techniques to warm-tune cavities with overlapping modes, a finite-element analysis of the tuning process, the design of a warm tuner which maintains mode polarization, and the results of tuning a cavity in which initial manufacturing variations caused the desired {pi} and nearby {pi}-1 modes to be ... continued below

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445 Kilobytes pages

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al., Leo Bellantoni et October 31, 2003.

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Superconducting cavities for the CKM RF separated kaon beamline at Fermilab have modes that are closely spaced compared to the resonance bandwidths when warm, and this complicates the field flatness (warm) tuning process. Additionally, it is necessary to maintain the azimuthal orientation of the mode during the tuning deformations. the authors present two analytic techniques to warm-tune cavities with overlapping modes, a finite-element analysis of the tuning process, the design of a warm tuner which maintains mode polarization, and the results of tuning a cavity in which initial manufacturing variations caused the desired {pi} and nearby {pi}-1 modes to be indistinguishable before field flatness tuning.

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445 Kilobytes pages

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  • 11th Workshop on RF Superconductivity, Travemunde (DE), 09/08/2003--09/12/2003

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  • Report No.: FERMILAB-Conf-03-353
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 816713
  • Archival Resource Key: ark:/67531/metadc737586

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  • October 31, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 1, 2016, 5:27 p.m.

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al., Leo Bellantoni et. Field flatness tuning of TM110 mode cavities with closely spaced modes, article, October 31, 2003; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc737586/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.