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Ultra-Sensitive Beam Motion Observation and Quad Stabilization Experiment at CESRTA

This project at CESRTA aims to demonstrate nanometer-sensitivity for beam motion observation and quad stabilization using high-sensitivity electronics. The installation of BBQ electronics onto an existing BPM at CESR enables observation of beam spectra and controlled low-amplitude beam excitation. The focus is on optimizing electronics for very low frequencies, selecting narrow frequency windows, and achieving a reasonable signal-to-noise ratio within a short measurement time.

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Ultra-Sensitive Beam Motion Observation and Quad Stabilization Experiment at CESRTA

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  1. Beam experiment at CESRTA • 1st phase: Demonstration of nm-sensitivity for beam motion observation- 2nd and 3rd phase: demonstration of quad stabilization on a nm-level • Installation of high sensitivity electronics onto an existing BPM at CESR: BBQ electronics. (M.Gasior et al. (CERN); successfully used for tune diagnostics at CERN, FNAL, BNL • Using CESR with low emittance beams (order of micrometers) • Optimization of this electronics for very low frequencies: 10 Hz – 100Hz; observation of beam spectra; selection of narrow frequency window with lowest beam eigen-motion • Controlled low amplitude beam excitation through current modulation of a corrector dipole. • Trying to obtain a reasonable signal to noise ratio for beam oscillations of nm-size (expected measurement time: 15 minutes) HS, 15.5.2009

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