Sample Stacks

Sample Stacks is a beamline component. JJ X-Ray has delivered Sample Stacks for ISIS, UK.

The Sample Stacks solution consists of three identical heavy loads (700 kg) and extremely high precision Sample Positioning Stacks for ISIS Target Station 2, Rutherford Appleton National Laboratory, UK. The first one was delivered in 2008, and in 2012 we delivered two more.  

The Sample Positioning Stacks have six (seven in 2012 version) degrees of freedom and a load capacity.  

They were built according to the following specifications:

Stage Load capacity Full stroke Accuracy / sphere of confusion Repeatability with 700 kg load
Vertical z-stage >1200 kg 320 mm 20 µm ± 5 µm
Rotation stage >1100 kg 360° 20 µm ± 0.001°
Crossed arcs >800 kg ±20° <150 kg
±8°  <800 kg
20 µm ±0.001°
Fine z-stage 250 kg 30 mm 5 µm ± 2 µm (250 kg)
y-stage >700 kg 600 mm 5 µm ± 2 µm
x-stage >700 kg 250 mm 5 µm ± 2 µm

The total height of the assembly in lower position is 990 mm. All motions are encoded and can be operated in closed loop providing even higher accuracy. The 700 kg load capacity with accuracies as above are valid for +/-8° on the crossed arcs and with +/- 50 mm offset in y-translation with a center of mass at 550 mm above the top plate. The 150 kg load capacity with accuracies as above is valid for +/-20° on the crossed arcs and with +/- 300 mm offset in y-translation with a center of mass at 550 mm above the top plate.

We are able to design and produce the specific stages that will suit your requirements.

You will find more details about the individual stages by clicking on the individual stages in the menu to your left.