A calculation of the dynamic aperture of the LHC

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The dynamic aperture for version 5.1, with a 300{mu}r crossing angle at IP1 and IP5, of the Large Hadron Collider (LHC) lattice has been estimated using the tracking code TEVLAT. The dynamic aperture calculated here is due to the magnetic field errors in the high gradient quadrupoles (MQX) in the two low-{beta} interaction regions at IR1 and IR5. No errors were assigned to the magnets in the arc regions of the lattice, nor were beam-beam effects incorporated. The dynamic aperture is expressed in terms of the {sigma} of the beam corresponding to the beam emittance of 3.75mm mr. With only ... continued below

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Gelfand, Norman M. April 23, 1999.

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Description

The dynamic aperture for version 5.1, with a 300{mu}r crossing angle at IP1 and IP5, of the Large Hadron Collider (LHC) lattice has been estimated using the tracking code TEVLAT. The dynamic aperture calculated here is due to the magnetic field errors in the high gradient quadrupoles (MQX) in the two low-{beta} interaction regions at IR1 and IR5. No errors were assigned to the magnets in the arc regions of the lattice, nor were beam-beam effects incorporated. The dynamic aperture is expressed in terms of the {sigma} of the beam corresponding to the beam emittance of 3.75mm mr. With only short term tracking, the combined effect of the multipoles and the crossing angle is to yield an average (over multipole coefficients generated with 100 different seeds) dynamic aperture of {approx} 11.7 {plus_minus} 1.2{sigma}.

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302 Kilobytes

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

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  • Other: DE00005971
  • Report No.: FERMILAB-Conf-99/084
  • Grant Number: NONE
  • Office of Scientific & Technical Information Report Number: 5971
  • Archival Resource Key: ark:/67531/metadc699146

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 23, 1999

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 18, 2016, 2:33 p.m.

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Gelfand, Norman M. A calculation of the dynamic aperture of the LHC, article, April 23, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc699146/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.