The multi-purpose platform is composed of a 2.5 m x 1.6 m granite platform, located at about 40 m from the source, and equipped with three towers, that can be displaced along or perpendicular to the beam. Each one is equipped with θ and 2θ rotations with 0.6 µrad and 6 µrad angular resolutions, respectively. The intermediate tower can take sample environments of up to 100 kg weight (axial load). For the peripheral ones, additional rotations stages, based on the flexure hinge technology, have been developed to provide a 0.25 µrad resolution over a few degrees. The second or the third tower can hold a 2D CCD based detector, known as FReLoN camera. In total the MPP setup provides 14 translation and 10 rotation stages. Nowadays the MPP is principally used to accommodate the detectors and the metrology needed to perform on-line mirror surfacing. It also hosts a microbeam optical setup (KB mirrors) to perform spectro-microscopy measurements and a microtomography station involving a custom sample stage and the FReloN camera.

This photos are from the 3-axis diffractometer, not from the MultiPurposePlatform 

 

 

 

 

 

Sample plate specs

Position Accuracy Angular resolution Resolution of tilting stages
y1 1 µm th1 0.5 µrad psi2 1mrad
x2-y2 1 µm th2 0.5 µrad phi2 1mrad
x3-y3 1 µm th3 0.5 µrad tilt1 5 µrad
xx2 2 µm tth1 1 mrad tilt2 5 µrad
yy2 2 µm tth2 1 mrad tilt3 5 µrad
trans1 1 µm tth3 1 mrad    
trans2 1 µm        
trans3 1 µm