SIMULATION AND CORRECTION OF THE CLOSED ORBIT DISTORTION FOR THE NEW LATTICE OF SOLEIL

The SOLEIL lattice has been modified in order to satisfy the growing interest in the use of undulators as the privileged photon sources. The sensitivity of the new optics to dipolar errors has been studied. The expected values of horizontal and vertical orbit distortions are calculated analytically using statistical formulae and computed with the BETA tracking program in order to take into account the effects of the sextupoles. The number and the location of beam position monitors and correctors have been revised. We report here the closed orbit distortion and its correction, using SVD method for the minimum necessary configuration of correctors and Beam Position Monitors system.