Correction of Dipole and IR Quadrupole Nonlinear Content in Large Colliders

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The concept of quasilocal (F, C, D) correction of nonlinearities is reviewed. Correction by two or more orders of magnitude is obtained; in addition, separated-function control of the horizontal, coupled and vertical motion becomes possible. Quasi-local correction of dipole nonlinearities is planned for LHC, and will greatly increase the linear specture. The 1990 SSC Site-Specific Conceptual Design includes quasilocal correction in the 20 TeV Collider, but restrictions may limit correction capability. Quasilocal (F, C, D) correction may also be useful in the SSC 2-TeV High Energy Booster (HEB). In high-luminosity collider mode, the nonlinear effects of the interaction-region (IR) quadrupoles ... continued below

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Neuffer, David January 1, 1991.

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The concept of quasilocal (F, C, D) correction of nonlinearities is reviewed. Correction by two or more orders of magnitude is obtained; in addition, separated-function control of the horizontal, coupled and vertical motion becomes possible. Quasi-local correction of dipole nonlinearities is planned for LHC, and will greatly increase the linear specture. The 1990 SSC Site-Specific Conceptual Design includes quasilocal correction in the 20 TeV Collider, but restrictions may limit correction capability. Quasilocal (F, C, D) correction may also be useful in the SSC 2-TeV High Energy Booster (HEB). In high-luminosity collider mode, the nonlinear effects of the interaction-region (IR) quadrupoles may be dominant; these errors may also be compensated quasilocally. Extensions of the (F, C, D) concept for IR correction, which exploit the restricted IR symmetry, are also suggested.

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  • Compiled for 5th IFCA Advanced Beam Dynamics Workshop, 3-8 Oct 1991, Corpus Christi, Texas

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  • Report No.: CEBAF-PR-91-41
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 954210
  • Archival Resource Key: ark:/67531/metadc927453

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1991

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 23, 2016, 11:42 a.m.

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Neuffer, David. Correction of Dipole and IR Quadrupole Nonlinear Content in Large Colliders, article, January 1, 1991; [Newport News, Virginia]. (digital.library.unt.edu/ark:/67531/metadc927453/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.