Using the cryo STXM for gas spectra

Here are the instructions, but I recommend using the STXM IV instead!

The cryo interlock will allow the chamber to be filled with up to $\approx 10$ torr of air or any gas. Here is how to proceed:

1. Make sure you are aligned since the piezos will be disabled when the pressure rises above 1 mtorr.
2. Close V9i, to protect the beamline (just in case - the interlock should take care of accidents anyway).
3. Close the valve between turbo and chamber by pushing the ``Turbo valve close'' button on the cryo interlock control panel. Leave the turbo running.
4. While watching the chamber convectron gauge, slowly open the chamber venting valve on the outboard side of the chamber (black handle). Close the valve as soon as you've reached the desired pressure.
5. Open V9i; now you can take all the spectra you want.
6. If you are done and you want to pump the chamber back down, open the Turbo valve on the cryo interlock control panel. Check that the turbo keeps spinning at full speed. If not, turn it off and right back on, and the chamber should pump down fine.