Online Minimization of Vertical Beam Sizes at APS

Yipeng Sun, Schaa, Volker RW (Ed.), Power, Maria (Ed.), Shiltsev, Vladimir (Ed.), White, Marion (Ed.)
2017
In this paper, online minimization of vertical beam sizes along the APS (Advanced Photon Source) storage ring is presented. A genetic algorithm (GA) was developed and employed for the online optimization in the APS storage ring. A total of 59 families of skew quadrupole magnets were employed as knobs to adjust the coupling and the vertical dispersion in the APS storage ring. Starting from initially zero current skew quadrupoles, small vertical beam sizes along the APS storage ring were achieved
more » ... ring were achieved in a short optimization time of one hour. The optimization results from this method are briefly compared with the one from LOCO (Linear Optics from Closed Orbits) response matrix correction.
doi:10.18429/jacow-napac2016-wepob13 fatcat:ftfivlpsdvaa7etpcvh5gc6aoy