Modeling in control of the Advanced Light Source

A software system for control of accelerator physics parameters of the Advanced Light Source (ALS) is being designed and implemented at LBL (Lawrence Berkeley Laboratory). Some of the parameters the authors wish to control are tunes, chromaticities, closed-orbit distortions and linear lattice distortions, and, possibly, amplitude- and momentum-dependent tune shifts. In all the applications, the goal is to allow the user to adjust physics parameters of the machine, instead of turning knobs that control magnets directly. This control will take place via a highly graphical user interface, with both a model appropriate to the application and any correction algorithm running alongside as separate processes.<>