Performance of a Nanometer Resolution BPM System

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International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will be as small as a few nanometers. it is important to the ongoing ILC design effort to demonstrate that these tolerances can be achieved--ideally using beam-based stability measurements. It has been estimated that an RF cavity BPM with modern waveform processing could provide a position measurement resolution of less than one nanometer. Such a system could form the basis of the desired beam-based stability measurement, as well as be used for other specialized purposes. They have developed a high resolution RF cavity BPM and associated electronics. ... continued below

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Vogel, V; Hayano, H; Honda, Y; Terunuma, N; Urakawa, J; Kolomensky, Y et al. October 14, 2005.

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International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will be as small as a few nanometers. it is important to the ongoing ILC design effort to demonstrate that these tolerances can be achieved--ideally using beam-based stability measurements. It has been estimated that an RF cavity BPM with modern waveform processing could provide a position measurement resolution of less than one nanometer. Such a system could form the basis of the desired beam-based stability measurement, as well as be used for other specialized purposes. They have developed a high resolution RF cavity BPM and associated electronics. A triplet comprised of these BPMs has been installed in the extraction line of the KEK Accelerator Test Facility (ATF) for testing with its ultra-low emittance beam. The three BPMs are rigidly mounted inside an alignment frame on six variable-length struts which can be used to move the BPMs in position and angle. they have developed novel methods for extracting the position and tilt information from the BPM signals including a robust calibration algorithm which is immune to beam jitter. To date, they have been able to demonstrate a resolution of approximately 20 nm over a dynamic range of {+-} 20 {micro}m. They report on the progress of these ongoing tests.

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PDF-file: 24 pages; size: 0 Kbytes

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  • Presented at: Nanobeam 2005, Kyoto, Japan, Oct 17 - Oct 21, 2005

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  • Report No.: UCRL-CONF-216283
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 885404
  • Archival Resource Key: ark:/67531/metadc875365

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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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  • October 14, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 6, 2016, 3:39 p.m.

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Vogel, V; Hayano, H; Honda, Y; Terunuma, N; Urakawa, J; Kolomensky, Y et al. Performance of a Nanometer Resolution BPM System, article, October 14, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc875365/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.