Hexapod Platform

Hexapod Platform

This multi-layer monochromator uses a matched pair of multi-layers to select a relatively wide energy bandpass beam from a white beam source. For some experiments, the high energy resolution of perfect crystals is not required and the higher flux possible with multi-layers can reduce exposure times and speed data collection. The energy range of multi-layer monochromators can be from ~50eV to >20keV depending on the multi-layer design selected. The energy resolutions (ΔE/E) achieved are typically a few percent, but depend on the multi-layer design. Multi-stripe multi-layers can be supplied to give additional energy ranges. An optional lateral translation system enables a white beam bypass mode or permits the selection of multi-stripes depending on the orientation of the multi-layer mirrors.

Features

Greater repeatability than stacked motion stages (serial kinematics)

Stiff, six-strut support

Ability to rotate about any defined centre point

Extremely good repeatability around chosen centre point

High resolution 0.1µm encoders

Programmable scanning motions

Six degrees of freedom

Specifications

Load capacity

200kg

Vertical range

±25mm
with 0.1μm encoder resolution

Lateral range

±25mm
with 0.1μm encoder resolution

Angular range

±2° (±40mrad) about each axis
with 1μrad resolution

Linear repeatability

±0.4μm

Linear accuracy

<1μm

Rotational accuracy

<1μrad

Rotational repeatability

±1μrad

Compound motions and suspended components (e.g. vacuum pumps) may limit ranges of movement. Modifications are available for specific requirements.