Speaker
Description
A fast beam-based alignment (BBA) method has been implemented at the Taiwan Photon Source to significantly enhance the efficiency of aligning beam position monitors with quadrupole magnet centers. By utilizing sinusoidal excitation of correctors and employing synchronous detection algorithms, alignment offsets are efficiently extracted across the entire storage ring. Experimental results demonstrate that the total measurement time is reduced from 8 hours to under 40 minutes, while maintaining precision comparable to conventional BBA methods. The primary sources of measurement uncertainty are attributed to betatron tune and orbit variations induced by magnetic hysteresis and ocean-induced ground motion. This approach provides a robust and time-efficient solution for routine orbit characterization in modern synchrotron light sources.
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