Sample stage

The sample stage represent the place the sample is located.

Geometry

Axis roles

The following axis role are provided.

To work properly with dedicated procedures or with Daiquiri, the following references have to be used.

Some of them are not mandatory, depending on which kind of features to want to use.

translation_x

Translation on the beam (positive following the beam = in detector direction).

translation_y

Lateral translation (positive on the left if you follow the beam.

translation_z

Vertical translation (positive from bottom up).

rotation

Rotation axis. By definition, at dial rotation=0, the sample_x axis is aligned to the beam.

It can be clock-wise or counter-clock-wise. For that a metatdata have to be set the axis in BLISS the following way.

  - name: srot
    user_tag:
    - dial.clockwise

  - name: somega
    user_tag:
    - dial.anticlockwise

sample_u

Translation over the rotation (same direction as translation_x when the rotation is at 0).

sample_v

Translation over the rotation (same direction as translation_y when the rotation is at 0)

sample_x

Virtual translation over the rotation (always following translation_x)

sample_y

Virtual translation over the rotation (always following translation_y)

This roles have to be binded to the real axis used by the beamline.

Focal position

The focal postion is located as x/y/z in this object.

See the modelization of the beam for more information.

Detector center

The detector center is a parameter from the tomo sample stage. It identifies the location of the detector at the sample stage coordinates.

See the modelization of the beam for more information.