Correlation plot facility in the SLC control system

The correlation plot facility is a powerful interactive tool for data acquisition and analysis throughout the SLC (Stanford Linear Collider). A generalized interface allows the user to perform a wide variety of machine physics experiments. The user may step one or two independent parameters such as magnet or feedback setpoints while measuring or calculating up to 160 others. Measured variables include all analog signals available to the control system as well as a variety of derived parameters such as beam size or emittance. Various fitting algorithms and display options are provided for data analysis. A software-callable interface is also provided. Applications based on this facility are used to phase klystrons, measure emittance and dispersion, minimize beam size at the interaction point and maintain beam collisions.<>