X-ray BPM-based feedback system at the APS storage ring

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At the Advanced Photon Source (APS) storage ring, the X-ray beam position monitors (X-BPMs) measure accurate photon position down to the submicron level. This level of stable measurement has been possible due to (1) superior thermal insulation and vibration damping of the X-ray BPM support structure, (2) minimal dependence on the bunch pattern and intensity variations, and (3) use of ultrastable preamplifiers and processing electronics. A new X-BPM interface is under development and will be discussed here. This interface will be integrated into the existing rf-based orbit feedback systems. To study preliminary results, an experimental X-BPM orbit feedback set-up was ... continued below

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9 p.

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Singh, O.; Erwin, L.; Decker, G.; Laird, R. & Lenkszus, F. May 17, 2000.

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Description

At the Advanced Photon Source (APS) storage ring, the X-ray beam position monitors (X-BPMs) measure accurate photon position down to the submicron level. This level of stable measurement has been possible due to (1) superior thermal insulation and vibration damping of the X-ray BPM support structure, (2) minimal dependence on the bunch pattern and intensity variations, and (3) use of ultrastable preamplifiers and processing electronics. A new X-BPM interface is under development and will be discussed here. This interface will be integrated into the existing rf-based orbit feedback systems. To study preliminary results, an experimental X-BPM orbit feedback set-up was developed and implemented in one of the bending magnet beamlines. The results from this set-up are encouraging. For an operational fill, a typical orbit drift of 30 microns (at X-ray BPMs) has been reduced to less than 5 microns. The fill-to-fill photon orbit reproducibility has been improved from 75 microns to less than 10 microns.

Physical Description

9 p.

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INIS; OSTI as DE00755857

Medium: P; Size: 9 pages

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  • 9th Beam Instrumentation Workshop, Cambridge, MA (US), 05/08/2000--05/11/2000

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  • Report No.: ANL/AOD/CP-101380
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 755857
  • Archival Resource Key: ark:/67531/metadc712178

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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.

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  • May 17, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 8:11 p.m.

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Singh, O.; Erwin, L.; Decker, G.; Laird, R. & Lenkszus, F. X-ray BPM-based feedback system at the APS storage ring, article, May 17, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc712178/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.