Rotations of the low-{beta} quadrupoles: Coupling in the Tevatron and the effect on the luminosity

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It is now generally recognized that a large roll, {approx} 6--7 mr, in a triplet low-{beta} quadrupole, which couples the horizontal and vertical motion of the beam, can significantly reduce the luminosity and impact the operation of the Tevatron. The question then arises, what is the effect of the small rolls of the low-{beta} quadrupoles on the luminosity. They will consider random rolls with a {sigma} = 1,2 and 4mr which can be expected due to errors in the surveys, or changes in alignment after the survey. In the actual operation of the Tevatron they attempt to correct for the ... continued below

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11 p.

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Gelfand, N.M. April 1, 1996.

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Description

It is now generally recognized that a large roll, {approx} 6--7 mr, in a triplet low-{beta} quadrupole, which couples the horizontal and vertical motion of the beam, can significantly reduce the luminosity and impact the operation of the Tevatron. The question then arises, what is the effect of the small rolls of the low-{beta} quadrupoles on the luminosity. They will consider random rolls with a {sigma} = 1,2 and 4mr which can be expected due to errors in the surveys, or changes in alignment after the survey. In the actual operation of the Tevatron they attempt to correct for the coupling and so this study will consider correction schemes and will compare the luminosity, after correction, with a configuration with no rolls.

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11 p.

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INIS; OSTI as DE96009370

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  • Other Information: PBD: Apr 1996

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  • Other: DE96009370
  • Report No.: FNAL-TM--1967
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/226067 | External Link
  • Office of Scientific & Technical Information Report Number: 226067
  • Archival Resource Key: ark:/67531/metadc673291

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  • April 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 1, 2016, 4:50 p.m.

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Gelfand, N.M. Rotations of the low-{beta} quadrupoles: Coupling in the Tevatron and the effect on the luminosity, report, April 1, 1996; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc673291/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.