The horizontal position of the beam as seen on the video systems was marked. A check was done to see how closely the omega axis coincides with the beam center. These were made to agree to within 10 microns. The operation of the cryostream was checked, and the cryostream position was checked with an alignment tool. If you have any questions about these checks or would like to watch them being done, beamline personnel would be happy to perform them while you watch.
Alignment consists of maximizing the beam intensity.
This chamber is located downstream of the shutters, so the shutters must be open in order for the flux to be maximized. There is an amplifier in the hutch, just below the goniostat. For operation at wavelengths shorter than about 0.8A or longer than 1.8 A, this gain may need to be increased or decreased respectively. If the counts on c2 are less than 150 per reading, the software assumes there is no flux due to a beamline problem and alignment will not be done. The flow meter is in the hutch and is the one marked He.