Cavity beam position monitor system for the Accelerator Test Facility 2. / Kim, Y.I. ; Ainsworth, R.; Aryshev, A.; Boogert, S.T.; Boorman, G.; Frisch, J.; Heo, A; Honda, Y.; Hwang, W. H.; Huang, J Y ; Kim, E. -S.; Kim, S.H; Lyapin, A.; Naito, T.; May, J.; McCormick, D.; Mellor, R.E.; Molloy, S.; Nelson, J.; Park, S. J.; Park, Y.J; Ross, M.; Shin, S; Swinson, C.; Smith, T.; Terunuma, N.; Tauchi, T.; Urakawa, J.; White, G.R.

In: Physical Review Special Topics: Accelerators and Beams, Vol. 15, No. 4, 042801, 10.04.2012.

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  • Y.I. Kim
  • A. Aryshev
  • J. Frisch
  • A Heo
  • Y. Honda
  • W. H. Hwang
  • J Y Huang
  • E. -S. Kim
  • S.H Kim
  • T. Naito
  • J. May
  • D. McCormick
  • R.E. Mellor
  • J. Nelson
  • S. J. Park
  • Y.J Park
  • M. Ross
  • S Shin
  • C. Swinson
  • T. Smith
  • N. Terunuma
  • T. Tauchi
  • J. Urakawa
  • G.R. White


The Accelerator Test Facility 2 (ATF2) is a scaled demonstrator system for final focus beam lines of linear high energy colliders. This paper describes the high resolution cavity beam position monitor (BPM) system, which is a part of the ATF2 diagnostics. Two types of cavity BPMs are used, C-band operating at 6.423 GHz, and S-band at 2.888 GHz with an increased beam aperture. The cavities, electronics, and digital processing are described. The resolution of the C-band system with attenuators was determined to be approximately 250 nm and 1  μm for the S-band system. Without attenuation the best recorded C-band cavity resolution was 27 nm.
Original languageEnglish
Article number042801
Number of pages16
JournalPhysical Review Special Topics: Accelerators and Beams
Issue number4
Publication statusPublished - 10 Apr 2012
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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