Abstract
In the past, betatron tune measurements at the Rapid Cycling Synchrotron (RCS) were made using a spectrum analyzer for betatron frequency analysis and one of the extraction kicker magnets to induce the coherent betatron motion. This method had several severe limitations: poor signal-to-noise ratio, inability to extract the beam after the measurement and dependence on the horizontal kick coupling into the vertical plane for vertical tune measurements. A new system is presently being constructed which will eliminate these problems. The beam will be kicked by independent horizontal and vertical ferrite pinger magnets. The beam positron data will be digitized and then analyzed by an array-processing computer using the Fast Fourier Transform (FFT). The control system will allow for additional improvements.
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