BPM system evaluation using model-independent analysis

An effort is underway at the Advanced Photon Source (APS) to explore the Model-Independent Analysis method on the APS storage ring. Effective methods are developed to efficiently evaluate the beam position monitors' (BPMs') performance and to easily identify the malfunctioning BPMs. Such a monitoring procedure can help to improve the overall reliability and performance of the BPMs, and thus benefit machine operation and physics studies. We show that the Model-Independent Analysis can resolve beam motion below the individual BPM resolution.