Relative alignment within the MAX IV 3 GeV storage ring magnet blocks

Abstract

Unlike the discrete magnet scheme of previous 3rd generation light sources, the magnet elements of the MAX IV storage rings are integrated in precision-machined magnet blocks. By analyzing the rotating coil measurements made by the magnet suppliers, we determined the relative alignment between consecutive magnet elements, which was foundto be <10 μm RMS for all magnet block typesin both horizontal and vertical direction. This article presents our analysis and results for the full magnet production series