1 DIAMOND LATTICE DESIGN CHALLENGES

The strong focusing required for high brightness in a third generation light source presents challenges in maintaining a good dynamic aperture. A traditional approach to improving dynamic stability has relied on fixing the tunes of the lattice away from major resonances, to minimise the strengths of the driving terms. We present here the results of an alternative approach, based on controlling the phase advances over different sections of the lattice, to reduce the magnitude of damaging terms in the single-turn map. This has yielded good results in the case of the storage ring for DIAMOND [1], the UK third generation light source