Tune system applications at the APS

The Advanced Photon Source (APS) storage ring is a third-generation X-ray synchrotron radiation user facility. The storage ring tune measurement system consists of signal pickup and beam excitation drive striplines, a network analyzer, and a vector spectrum analyzer. The system has been used for daily tune tracking, beta-function measurement, chromaticity measurement, lattice correction, magnet power supply stability analysis, machine coupling impedance, and observation of beam instabilities. Several software applications were developed to automate the instrument control and data collection processes. We present the current configuration of the tune measurement system, the software tools, and their application at the APS.