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Cavity beam position monitor system for the Accelerator Test Facility 2

  • Y.I. Kim
  • , R. Ainsworth
  • , A. Aryshev
  • , S.T. Boogert
  • , G. Boorman
  • , J. Frisch
  • , A Heo
  • , Y. Honda
  • , W. H. Hwang
  • , J Y Huang
  • , E. -S. Kim
  • , S.H Kim
  • , A. Lyapin
  • , T. Naito
  • , J. May
  • , D. McCormick
  • , R.E. Mellor
  • , S. Molloy
  • , 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

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Abstract

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
Volume15
Issue number4
DOIs
Publication statusPublished - 10 Apr 2012

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