Realization of fast diffraction on BL3 at the ESRF

The focused white beam on beamline 3 is produced by the joint action of a windulator insertion device coupled to a tunable toroidal mirror. It is shown that this combination gives the highest possible flux density at the sample position. The intensity is sufficient to record single bunch Laue pattern from smaller proteins containing up to 1200 reflections per image. The possibilities of increasing the flux further by going to mini gap wundulators are also discussed. A comparison between a low (beta) and a high (beta) undulator is discussed in an attempt to boost the time resolving power in monochromatic experiments.