16 . Spectrum Two HATR User's Guide
NOTE: Take care when adjusting mirrors 2 and 3. They are very sensitive to rotational
adjustment.
8.
Place the top plate on the accessory.
9.
Look at the crystal from above, and gently adjust mirror 2 until the crystal is illuminated
as brightly as possible.
10.
Place a card between the exit port of the HATR and the window on the right of the
sample compartment.
11.
Adjust mirror 3 until the movable part of the beam is centered on the exit window.
12.
Remove the card from the HATR.
13.
Remove the white-light alignment tool from the baseplate.
14.
Select
Monitor
from the Measurement menu.
The Live tab is displayed.
15.
Gently adjust mirror 2, using a wrench, until you obtain an energy maximum.
16.
Repeat for mirror 3.
NOTE: You may need to adjust mirror 2 and mirror 3 several times to find the optimum
position.
17.
Record the maximum throughput energy and then click
Halt
.
18.
Compare the maximum energy with that recorded at the beginning of the installation
procedure (Step 4 on page 11).
If the energy throughput of the HATR is 15–25% of the energy throughput of the open
beam, no further adjustments are needed.
If the energy throughput of the HATR is lower than 15% of the energy throughput of
the open beam, repeat the alignment procedure.
