How to run EXAFS, XRR, and XSW scans

KEEP IN MIND: never open more than one scan tool at the same time!

Please note that in the past we had Bruker as the only fluorescence detector. Now that we have also the Sirius3 detector you will find either Sirius3 or Bruker label in the panels where detectors and ROI are selected, depending on which one is currently mounted.

Also, Energy0 has become a read-only parameter depending exclusively on the El_Edge value, so the corresponding white box has been removed from the panels.

In any Scan Tool window, you will see green and white boxes: 

The green box shows the values currently in use and is read only, the white box is used to enter the new input. New values are shown in blue and bold: they are not set until you press ENTER on your keyboard. When this is done, the white box will show a black font and the green box will be updated with the new value.

• To run normal EXAFS scans, use the EXAFS Scan tool. 

You can set up to 4 different detector ROIs for fluorescence measurements. To do so, you can enter the first and last channels of the Sirius 3 (or Bruker), separated by a comma and enclosed in square brackets. E.g.: to enter a ROI including everything channel 1 to channel 34 enter: [1,34])



Also, you can enter the ROIs for the Bruker detector following the syntax used for the element edge (first field from the top) and some default values will be loaded (please check with the beamline staff, first). Such values are ok for the K_alpha emission line of the element in standard considitions (i.e. with no peaks overlapping). Starting from the default values, you can always adjust the channels to suit your (experiment) needs.


 

•  To run EXAFS scans at constant q you can use the XSW-EXAFS Scan Tool:

• To run XRR scans, set the corresponding Scan Type and insert the values at which the sample is parallel to the beam (theta zero) and the diode detects the direct beam (2theta zero):