The standard configuration of the von Hamos spectrometer can accommodate 16 crystals, each positioned by three actuators, providing a total number of 48 motors.
The actuators are connected to the crystal holders in a kinematic setup, and each crystal is easily exchanged by a magnetic snap-on mounting.
This is in particular useful for experiments that requires to different crystal orientations e.g. Si(111) and Si(220) as in the publication of A. M. March et. al. in J. Phys. Chem. C 2017, 121, 2620−2626 that utilizes the JJ X-Ray von Hamos spectrometer.
The spectrometers can be delivered with or without crystals and with or without motor controllers or drives.
|Crystal size||110 x 30 mm2|
|Mechanical actuator resolution||0.275 µm/step|
|Horizontal angular resolution||4.04 µrad/step|
|Vertical angular resolution||12.5 µrad/step|
|Linear actuator stroke||20 mm|
Reduced size von Hamos
The von Hamos spectrometer can be configured in many different setups. Examples are 4 x 1 single row configuration or a 2 x 2 configuration.
6 axes support for the von Hamos spectrometer
To support the von Hamos spectrometer we have designed a stage with six degrees of freedom (three rotation and three linear).
The 6-axes stage for the von Hamos spectrometer installed at the FXE beamline at the European XFEL.