The MASSIF (Massively Automated Sample Selection Integrated Facility) suite of beam lines comprises three individual end-stations, MASSIF-1, MASSIF-2 and MASSIF-3 located at the first branch of ID30. All three beam-lines run at a fixed photon energy slightly above the selenium absorption edge.

MASSIF represents the entry hub for crystals sent to the ESRF’s macromolecular crystallography (MX) beam-lines. This extensive automated sample evaluation platform directly addresses a fundamental problem in modern Structural Biology: the inter-and-intra sample variability. To accommodate the variability of physical crystal sizes, the MASSIF end stations will have different beam sizes, two stations with 100 μm beam diameter and one micro-beam station with a beam-size of 15 μm in diameter.