Abstract
This paper discusses improvements made to the fast orbit feedback (FOFB) system at NSLS-II in 2019. We first characterized the system by measuring the transfer function and the closed-loop gain of the system. We also constructed a model to predict the performance, which was based on physical behaviors. After finding and fixing the sources of the latency, we improved the closed-loop gain’s bandwidth from 250 Hz to 400 Hz in the horizontal plane and 250 Hz to 300 Hz in the vertical plane. The orbit beam instability improved by 30% and 10% in the horizontal and vertical planes, respectively.
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Schedule a callMore From: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
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