Cavity beam position monitor system for the Accelerator Test Facility 2
- 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.
- White, G.R
Publication date
January 2012
DOI Publisher
American Physical Society (APS)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
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