Effect of the Beam-Beam Interactions on the Dynamic Aperture of the LHC at Collision

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The dynamic aperture of the LHC at collision energy is limited by the field errors in the IR quadrupoles being built at FNAL and KEK. The 300{micro}rad crossing angle, incorporated in the design to reduce the effect of the long-range beam beam interactions, enhances the effect of the multipoles on the dynamic aperture. We have investigated the possibility of a different crossing angle with a more accurate modelling of the long-range interactions. Tune scans have been done to determine if a better choice of the tunes exists.

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al., Norman M. Gelfand et May 3, 1999.

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The dynamic aperture of the LHC at collision energy is limited by the field errors in the IR quadrupoles being built at FNAL and KEK. The 300{micro}rad crossing angle, incorporated in the design to reduce the effect of the long-range beam beam interactions, enhances the effect of the multipoles on the dynamic aperture. We have investigated the possibility of a different crossing angle with a more accurate modelling of the long-range interactions. Tune scans have been done to determine if a better choice of the tunes exists.

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575 Images

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  • Particle Accelerator Conference (PAC99), New York, March 29-April 2, 1999

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  • Other: DE00006274
  • Report No.: FERMILAB-Conf-99/085
  • Grant Number: NONE
  • Office of Scientific & Technical Information Report Number: 6274
  • Archival Resource Key: ark:/67531/metadc696161

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  • May 3, 1999

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 5, 2016, 8:52 p.m.

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al., Norman M. Gelfand et. Effect of the Beam-Beam Interactions on the Dynamic Aperture of the LHC at Collision, article, May 3, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc696161/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.