Small Aperture BPM to Quadrupole Assembly Tolerance Study

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Description

The LCLS injector and linac systems utilize a series of quadrupole magnets with a beam position monitor (BPM) captured in the magnet pole tips. The BPM measures the electron beam position by comparing the electrical signal from 4 electrodes and interpolating beam position from these signals. The manufacturing tolerances of the magnet and BPM are critical in determining the mechanical precision of the electrodes relative to the nominal electron beam Z-axis. This study evaluates the statistical uncertainty of the electrodes center axis relative to the nominal electron beam axis.

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Fong, K. W. December 7, 2010.

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Description

The LCLS injector and linac systems utilize a series of quadrupole magnets with a beam position monitor (BPM) captured in the magnet pole tips. The BPM measures the electron beam position by comparing the electrical signal from 4 electrodes and interpolating beam position from these signals. The manufacturing tolerances of the magnet and BPM are critical in determining the mechanical precision of the electrodes relative to the nominal electron beam Z-axis. This study evaluates the statistical uncertainty of the electrodes center axis relative to the nominal electron beam axis.

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  • Report No.: SLAC-TN-10-075
  • Grant Number: AC02-76SF00515
  • DOI: 10.2172/1000324 | External Link
  • Office of Scientific & Technical Information Report Number: 1000324
  • Archival Resource Key: ark:/67531/metadc831671

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 7, 2010

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

Description Last Updated

  • Dec. 1, 2016, 10:21 p.m.

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Fong, K. W. Small Aperture BPM to Quadrupole Assembly Tolerance Study, report, December 7, 2010; United States. (digital.library.unt.edu/ark:/67531/metadc831671/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.