Effect of Wiggler insertions on the single-particle dynamics of the NLC main damping rings

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As they are expected to occupy a large portion of the lattice, wiggler insert ions will introduce significant linear and nonlinear perturbations to the single-particle dynamics in the NLC Main Damping Rings (MDR). The nonlinearities are of particular concern as a sufficiently large Dynamic Aperture (DA) is required for high injection efficiency. The main content of this report is a study of the wigglers impact on the DA of the NLC-MDR latest lattice design. The particle dynamics is modeled by transfer maps calculated by integration through the wiggler fields. For field representation we employed a 3D multipole expansion derived from ... continued below

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Venturini, Marco July 30, 2003.

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As they are expected to occupy a large portion of the lattice, wiggler insert ions will introduce significant linear and nonlinear perturbations to the single-particle dynamics in the NLC Main Damping Rings (MDR). The nonlinearities are of particular concern as a sufficiently large Dynamic Aperture (DA) is required for high injection efficiency. The main content of this report is a study of the wigglers impact on the DA of the NLC-MDR latest lattice design. The particle dynamics is modeled by transfer maps calculated by integration through the wiggler fields. For field representation we employed a 3D multipole expansion derived from the field data that were obtained with the aid of a magnet design code. Additional contents of this paper include an investigation of a simplified model of wiggler consisting of a sequence of standard magnet elements (where thin octupoles are used to represent the dominant nonlinearities) and the suggestion of a possible correction scheme to compensate the wiggler nonlinearities.

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INIS; OSTI as DE00827950

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  • Other Information: PBD: 30 Jul 2003

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  • Report No.: LBNL--53264
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/827950 | External Link
  • Office of Scientific & Technical Information Report Number: 827950
  • Archival Resource Key: ark:/67531/metadc786775

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  • July 30, 2003

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • April 4, 2016, 12:47 p.m.

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Venturini, Marco. Effect of Wiggler insertions on the single-particle dynamics of the NLC main damping rings, report, July 30, 2003; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc786775/: accessed May 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.