Kim, Y.I. , Ainsworth, Rob, Aryshev, A., Boogert, Stewart , Boorman, Gary, Frisch, J., Heo, A, Honda, Y., Hwang, W. H., Huang, J Y , Kim, E. -S., Kim, S.H, Lyapin, Alexey, Naito, T., May, J., McCormick, D., Mellor, R.E., Molloy, Stephen, Nelson, J., Park, S. J., Park, Y.J, Ross, M., Shin, S, Swinson, C., Smith, T., Terunuma, N., Tauchi, T., Urakawa, J. and White, G.R (2012) Cavity beam position monitor system for the Accelerator Test Facility 2. Physical Review Special Topics: Accelerators and Beams, 15 (4).
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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.
This is a Submitted version This version's date is: 2012 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/6d8029a1-3716-7e08-adc9-18cd747f8406/2/
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