Von Hamos Spectrometer

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 require 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.

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.

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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

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