Beam Line Layout

All of the XRF imaging beam lines follow the same basic setup:

1. All synchrotron experiments are carried out in shielded rooms called hutches.

2. ​​Incident synchrotron X-ray beam travels parallel to the ground, its position is fixed and enters the hutch with a beam size of a ~5x5mm2.

3. Most of the components are fixed to a motorized table

4. The x-ray beam can be focussed to less than 100 microns diameter with focussing optics, which are less than 20mm from the sample.

5. Samples are mounted at 45 degrees to the x-ray beam

6. A silicon drift detector is positioned at 90 degrees to the beam pointing at the x-ray beam-sample interaction point to detect fluoresced x-rays from the sample.

7. A microscope for sample visualization is positioned perpendicular to the sample.

8. As the x-ray beam is fixed, we must be able to move the sample in front of the beam. This is achieved by routing samples on motorized stages that provide movement in the X (horizontal), Y (vertical) and Z (towards and away from the beam ) axes.​

​

Sample mounting consideration

The main considerations 

​

Source: 1.3 Tesla Bend Magnet, 0.75 mrad acceptance

​

Sample Environment: Ambient temperature and pressure, helium atmosphere, electrical passthroughs.

Sample mounting:

Primary mode is the "Wheel of Fortune"optimized for thin sections. Samples are mounted to cassettes that push fit into a wheel that can hold up to 6 cassettes (see gallery and CAD below).