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TY - UNPB AU - Martí, Z. AU - Benedetti, G. AU - Franchi, A. AU - Iriso, U. AU - Morales, E. ED - Kim, Changbum ED - Schaa, Volker R. W. ED - Kim, Dong-Eon ED - Lee, Jaeyu TI - Fast Beam-Based Alignment Using AC Excitations J2 - Proc. of IBIC2021, Pohang, Rep. of Korea, 24-28 May 2021 CY - Pohang, Rep. of Korea T2 - International Beam Instrumentation Conference T3 - 10 LA - english AB - Fast beam-based alignment (BBA) of BPMs and quadrupole magnets was evolved and demonstrated at ALBA*. A conventional BBA method makes a local bump, change quadrupole strength, and measure COD by the quadrupole, which is very time-consuming. However, the fast BBA using AC excitations of corrector magnets can quickly measure the displacement between a BPM and a quadrupole. In the case of ALBA, the BBA duration was reduced from 5 hours to 10 minutes. The accuracy was the same as the conventional BBA (~10 um). This fast BBA method will help the alignment of BPMs in 3rd and 4th generation light sources. PB - JACoW Publishing CP - Geneva, Switzerland ER -