The pre-focusing lenses consists of the following lens stack:
Pack # | Lens used (ROC) | Diameter | Motor Positions form eLog |
1 | 1 x 500 µm | 1414 µm | Stack 1 |
2 | 1 x 300 µm | 1095 µm | Stack 2 |
3 | 1 x 300 µm & 1 x 1000 µm | 1095 µm | Stack 3 |
Each lens stack contains 3 lens packs and an out position totaling 16 total scenarios including no lenses used.
The pre-focusing lenses consisted of two stages: a Y-motion with states records and a X-motor to adjust the position for optimal focus. The screen still needs to be developed as well as the python class.
The pre-focusing screen from the home screens in the "Beamline" tab. The screens look like:
The screen shows the two positional motors with their states.
They are also available from the <hutch>3 hutch-python interface. Detailed documentation is here.
A brief list of available commands are:
<prefocus>(): return <most important info>
<prefocus>...
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