The root where the data is saved is always set by the beamline scientist. After this the user can influence where the data goes by using one of the following commands:
Following detectors are not compatible with step scans:
One Dimensional Step Scans
Two Dimensional Step Scans
Below the available commands are listed.
Following detectors are not compatible with continuous scans:
Depending on which detectors are used one needs to select a scan device that takes care of the detector triggering. This is typically set up by the beamline scientist.
The available scan devices can be found via the command:
One Dimensional Continuous Scans
Two Dimensional Continuous Scans
Sequence of Commands/Scans
You can execute a list of commands by putting all the commands in a text file. Each command should be written on a new line.
Attenuation of the Beam
The X-ray beam can be attenuated using an absorber which contains Al and Si absorbers of different thicknesses.
Upon requesting an attenuation the device calculates the needed absorber thickness for the current energy.
One can select which attenuator material to be used.
Setting the Attenuation
Incrementing the Attenuation
Report on the Current Attenuation
Extra Bells and Whistles
A user is advised not to change these parameters if one does not know what he/she is doing .
Scan mode allows you to customise certain scans.
The scan modes can be listed by:
Setting a scanmode can be done by:
The following table provides you with some extra information on the available options:
See details in Acquisition Modes table below.
|energy_scan_mode||0, 1, 2||Determines which axis is the energy during continuous xanes scans.|
The maximum of the range over which is sampled during a golden angle acquisition.
Determines the overscan area during continuous scans.
Setting the fixed number of <overscan_pixels> to 5 and the <overscan_modus> to modus 1.
Determines the stage scanning mode during continuous scans.
|triggering_mode||0, 1||See details in the Triggering Modes table below.|
|0||TTL gate is used by all detectors.||Typical Scanning|
|1||TTL gate is used for all non photon counting detectors. The photon counting detectors use their internal exposure time clock.||Ptychography Scans||In this mode the photon counting detectors might miss pixels. After the scan, one needs to compile a list of where the detectors were triggered.|
|Mode||Triggering Based On|
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