Internal Note 20130724
Alternative Orbit Correction Modeling for the MAX IV 3 GeV Storage Ring
Last revised: October 9, 2014
Author: Simon C. Leemann
Previous analysis of the MAX IV 3 GeV storage ring lattice under the influence of imperfections  gave a somewhat pessimistic assessment of performance after orbit correction. It was, however, also pointed out that orbit correction itself was not being modeled in accordance with how the procedure is carried out in the real storage ring. It was assumed that poor post-correction performance could be related to modeling deficiencies. This note summarizes an attempt to model orbit correction in a different way so that a better representation of its real application is achieved. Resulting closed orbit deviations, dynamic aperture, and emittance coupling are presented. They show that a more optimistic outcome can be expected from orbit correction in the real storage ring.