AGS-booster orbit and resonance correction

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A large tune-spread due to space charge and strong random eddy current sextupoles exists at injection in the AGS-Booster. As a result, particles in the beam may cross several imperfection resonances that can be caused by random magnet errors. The correction scheme proposed deals with four half-integer stopband resonances, four third order sextupole induced resonances and both the sum and difference linear coupling resonances. All of these resonances can have a chance to be swept through by the beam during injection bunching and the early stage of acceleration. A system of correctors involving skew quadrupoles, trim quadrupoles and sextupoles is ... continued below

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Pages: 3

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Milutinovic, J.; Ruggiero, A.G.; Tepikian, S. & Weng, W.T. January 1, 1989.

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Description

A large tune-spread due to space charge and strong random eddy current sextupoles exists at injection in the AGS-Booster. As a result, particles in the beam may cross several imperfection resonances that can be caused by random magnet errors. The correction scheme proposed deals with four half-integer stopband resonances, four third order sextupole induced resonances and both the sum and difference linear coupling resonances. All of these resonances can have a chance to be swept through by the beam during injection bunching and the early stage of acceleration. A system of correctors involving skew quadrupoles, trim quadrupoles and sextupoles is described with the capability of correcting all the major resonances involved, simultaneously. Also a closed orbit correction scheme is described which requires, to be effective, a cascade of local 3-magnet bumps. Several magnet imperfections and survey misalignment errors are investigated. 7 refs., 3 figs.

Physical Description

Pages: 3

Notes

NTIS, PC A02 - OSTI; 3.

Source

  • 13. particle accelerator conference, Chicago, IL, USA, 20 Mar 1989

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  • Other: DE89010576
  • Report No.: BNL-41868
  • Report No.: CONF-890335-69
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 6081041
  • Archival Resource Key: ark:/67531/metadc1107541

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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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  • January 1, 1989

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • April 23, 2018, 1:25 p.m.

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Milutinovic, J.; Ruggiero, A.G.; Tepikian, S. & Weng, W.T. AGS-booster orbit and resonance correction, article, January 1, 1989; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1107541/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.