Automated beam based alignment of the ALS quadrupoles

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Description

Knowing the electrical offset of the storage ring beam position monitors (BPM) to an adjacent quadrupole magnetic center is important in order to correct the orbit in the ring. The authors describe a simple, fast and reliable technique to measure the BPM electrical centers relative to the quadrupole magnetic centers. By varying individual quadrupole magnets and observing the effects on the orbit they were able to measure the BPM offsets in half the horizontal and vertical BPMs (48) in the ALS. These offsets were measured to an accuracy of better than 50{mu}m. The technique is completely automated and takes less ... continued below

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3 pages

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Portmann, G.; Robin, D. & Schachinger, L. April 1995.

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Description

Knowing the electrical offset of the storage ring beam position monitors (BPM) to an adjacent quadrupole magnetic center is important in order to correct the orbit in the ring. The authors describe a simple, fast and reliable technique to measure the BPM electrical centers relative to the quadrupole magnetic centers. By varying individual quadrupole magnets and observing the effects on the orbit they were able to measure the BPM offsets in half the horizontal and vertical BPMs (48) in the ALS. These offsets were measured to an accuracy of better than 50{mu}m. The technique is completely automated and takes less than 3 hours for the whole ring.

Physical Description

3 pages

Notes

OSTI as DE00114559

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  • 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (US), 05/01/1995--05/05/1995; Other Information: Supercedes report DE96001108; PBD: Apr 1995

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  • Other: DE96001108
  • Report No.: LBL--36434
  • Report No.: CONF-950512--337
  • Report No.: LBNL/ALS--561
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 114559
  • Archival Resource Key: ark:/67531/metadc624906

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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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  • April 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 5, 2016, 12:45 p.m.

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Portmann, G.; Robin, D. & Schachinger, L. Automated beam based alignment of the ALS quadrupoles, article, April 1995; California. (digital.library.unt.edu/ark:/67531/metadc624906/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.